Download SERVICE MANUAL - Mitsubishi Electric Cooling & Heating
Transcript
Revision D: • MXZ-2A20NA - 2 has been added. Please void OB444 REVISED EDITION-C. SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS OUTDOOR UNIT SERVICE MANUAL HFC utilized No. OB444 REVISED EDITION-D R410A Inverter-controlled multi system type Models MXZ-2A20NA MXZ-2A20NA MXZ-2A20NA MXZ-3A30NA MXZ-3A30NA MXZ-4A36NA 1 2 1 Indoor unit service manual MSZ-A·NA Series (OB450) CONTENTS MXZ-2A20NA MXZ-2A20NA NOTE: • This service manual describes technical data of the outdoor units. • RoHS compliant products have <G> mark on the spec name plate. For servicing of RoHS compliant products, refer to the RoHS Parts List. 1. TECHNICAL CHANGES· ·································· 2 2. PART NAMES AND FUNCTIONS ····················· 6 3. INDOOR UNITS COMBINATION ······················ 7 4. SPECIFICATION ·············································· 18 5. OUTLINES AND DIMENSIONS ······················ 21 6. WIRING DIAGRAM·········································· 26 7. REFRIGERANT SYSTEM DIAGRAM ············· 32 8. DATA ································································ 38 9. ACTUATOR CONTROL··································· 54 10. SERVICE FUNCTIONS···································· 54 11. TROUBLESHOOTING ····································· 56 12. DISASSEMBLY INSTRUCTIONS ···················· 74 13. PARTS LIST····················································· 86 14. RoHS PARTS LIST ·········································· 94 15. OPTIONAL PARTS ·········································110 1 The Slim Line. From Mitsubishi Electric. TM 9700058 33223 Revision A: • RoHS PARTS LIST has been added. Revision B: • MXZ-2A20NA - 1 and MXZ-3A30NA - have been added. 1 Revision C: • MXZ-4A36NA has been added. Revision D: • MXZ-2A20NA - 1 2 has been added. TECHNICAL CHANGES MXZ-2A20NA New model MXZ-30TN2 MXZ-3A30NA 1. Combinations of connectable indoor units have been increased. 2. Capacity class of connectable indoor units have been made larger. 3. Compressor has been changed. (THV247FBA TNB220FMCH) 4. Outdoor fan motor has been changed. (RA6N60-AA RC0J60-AB) 5. Refrigerant has been changed. (R22 R410A) 6. Refrigerant system diagram has been changed. • 1 of 2 high pressure switch has been removed. • Accumulator has been removed. • Receiver has been added. 7. Communication system has been changed. 8. Power supply way has been changed (change to supply to outdoor unit). 9. Evaporation temperature thermistor has been added. 10. Ambient temperature thermistor has been added. MXZ-2A20NA 1. 2. 3. 4. 5. MXZ-2A20NA - 1 Compressor has been changed. (SNB130FPDH1 SNB130FQBH1) Gas pipe temperature thermistor has been removed. Pre-heat control has been added. Electronic control P.C. board has been changed. Power board has been changed. MXZ-3A30NA MXZ-3A30NA - 1 1. Ball valve has been changed to stop valve. 2. Gas pipe temperature thermistor has been removed. 3. Pre-heat control has been added. 4. Auto line correcting function has been added. 5. Noise filter P.C. board has been changed. 6. Electronic control P.C. board has been changed. 7. Weight has been changed. (158lb. 148lb.) MXZ-4A36NA New model MXZ-2A20NA 1. 2. 3. 4. 1 MXZ-2A20NA - 2 Electronic control P.C. board has been changed. Noise filter P.C. board has been changed. Ball valve has been changed to stop valve. Sub panel has been added. 2 INFORMATION FOR THE AIR CONDITIONER WITH R410A REFRIGERANT oil Refrigeration Refrigerant • This room air conditioner adopts HFC refrigerant (R410A) which never destroys the ozone layer. • Pay particular attention to the following points, though the basic installation procedure is same as that for R22 air conditioners. As R410A has working pressure approximate 1.6 times as high as that of R22, some special tools and piping parts/ materials are required. Refer to the table below. Take sufficient care not to allow water and other contaminations to enter the R410A refrigerant during storage and installation, since it is more susceptible to contaminations than R22. For refrigerant piping, use clean, pressure-proof parts/materials specifically designed for R410A. (Refer to 2. Refrigerant piping.) Composition change may occur in R410A since it is a mixed refrigerant. When charging, charge liquid refrigerant to prevent composition change. Refrigerant Composition (Ratio) Refrigerant handling Chlorine Safety group (ASHRAE) Molecular weight Boiling point (-˚F) Steam pressure [77-˚F](PSIG) Saturated steam density [77˚F](lb/ft3) Combustibility ODP 1 GWP 2 Refrigerant charge method Additional charge on leakage Kind Color Smell 1: Ozone Depletion Potential 2: Global Warming Potential New refrigerant R410A HFC-32: HFC-125 (50%:50%) Pseudo-azeotropic refrigerant Not included A1/A1 72.6 -60.5 225.82 3.995 Non combustible 0 1730 From liquid phase in cylinder Possible Incompatible oil Non Non : based on CFC-11 : based on CO2 3 Previous refrigerant R22 R22 (100%) Single refrigerant Included A1 86.5 -41.4 136.34 2.772 Non combustible 0.055 1700 Gas phase Possible Compatible oil Light yellow Non Compressor New Specification Current Specification The incompatible refrigeration oil easily separates from Since refrigerant and refrigeration oil are compatible, refrigerant and is in the upper layer inside the suction muffler. refrigeration oil goes back to the compressor through the Raising position of the oil back hole enables to back the lower position oil back hole. refrigeration oil of the upper layer to flow back to the compressor. Suction muffler Suction muffler Oil back hole Compressor Compressor Refrigeration oil Oil back hole Refrigerant Refrigeration oil /Refrigerant Conversion chart of refrigerant temperature and pressure (PSIG) 580 Saturated liquid pressure 508 R410A 435 R22 363 290 218 145 73 0 -73 -22 -4 14 32 50 68 86 104 122 140 (°F) 1. Tools dedicated for the air conditioner with R410A refrigerant The following tools are required for R410A refrigerant. Some R22 tools can be substituted for R410A tools. R410A tools Description Can R22 tools be used? R410A has high pressures beyond the measurement range of existing gauges. Gauge manifold No Charge hose No Hose material has been changed to improve the pressure resistance. Gas leak detector No Dedicated for HFC refrigerant. Yes 1/4in. and 3/8in. Torque wrench No 1/2in. and 5/8in. Flare tool Yes Clamp bar hole has been enlarged to reinforce the spring strength in the tool. Flare gauge Vacuum pump adapter Electronic scale for refrigerant charging New Provided for flaring work (to be used with R22 flare tool). Provided to prevent the back flow of oil. This adapter enables you to use vacuum pumps. It is difficult to measure R410A with a charging cylinder because the refrigerant bubbles due to high pressure and high-speed vaporization. New New No : Not Substitutable for R410A Yes : Substitutable for R410A 4 2. Refrigerant piping Specifications Use the copper or copper-alloy seamless pipes for refrigerant that meet the following specifications. 1/4 Wall thickness (inch) 0.0315 3/8 0.0315 Heat resisting foam plastic 1/2 0.0315 Specific gravity 0.045 Thickness 0.315 inch 5/8 0.0394 Outside diameter (inch) Insulation material Flaring work and flare nut Flaring work for R410A pipe differs from that for R22 pipe. For details of flaring work, refer to installation manual “FLARING WORK”. Dimension of flare nut (mm) [inch] Pipe diameter (inch) 1/4 R410A R22 17 [11/16] 17 [11/16] 3/8 22 [7/8] 22 [7/8] 1/2 26 [1-1/32] 24 [15/16] 5/8 29 [1-5/32] 27 [1-1/16] 3. Refrigeration oil Apply the special refrigeration oil (accessories: packed with indoor unit) to the flare and the union seat surfaces. 4. Air purge • Do not discharge the refrigerant into the atmosphere. Take care not to discharge refrigerant into the atmosphere during installation, reinstallation, or repairs to the refrigerant circuit. • Use the vacuum pump for air purging for the purpose of environmental protection. 5. Additional charge For additional charging, charge the refrigerant from liquid phase of the gas cylinder. If the refrigerant is charged from the gas phase, composition change may occur in the refrigerant inside the cylinder and the outdoor unit. In this case, ability of the refrigeration cycle decreases or normal operation can be impossible. However, charging the liquid refrigerant all at once may cause the compressor to be locked. Thus, charge the refrigerant slowly. Union Stop valve Indoor unit Liquid pipe Gas pipe Refrigerant gas cylinder operating valve Outdoor unit Service port Gauge manifold valve (for R410A) Charge hose (for R410A) Refrigerant gas cylinder for R410A with siphon Refrigerant (liquid) Electronic scale for refrigerant charging 5 2 PART NAMES AND FUNCTIONS MXZ-2A20NA MXZ-2A20NA - MXZ-2A20NA - 1 2 Air inlet (Back and side) Air inlet (Back and side) Air outlet Air outlet Drain outlet Drain outlet MXZ-3A30NA - MXZ-3A30NA Air inlet (Back and side) 1 MXZ-4A36NA Air inlet (Back and side) Air outlet Air outlet Drain outlet Drain outlet 6 3 INDOOR UNITS COMBINATION MXZ-2A20NA MXZ-2A20NA - 1 MXZ-2A20NA - 2 Cooling capacity (BTU/h) Indoor units combination Unit A Unit B 09 9,000 – 12 12,000 – 15 15,000 – 09+09 9,000 9,000 09+12 8,500 11,500 09+15 7,500 12,500 12+12 10,000 10,000 Total Power consumption (W) 9,000 (5,400 ~ 9,000) 12,000 (5,400 ~ 12,000) 15,000 (5,400 ~ 15,000) 18,000 (7,800 ~ 18,000) 20,000 (7,800 ~ 20,000) 20,000 (7,800 ~ 20,000) 20,000 (7,800 ~ 20,000) 730 (490 ~ 730) 990 ( 490 ~ 990) 1,540 (490 ~ 1,540) 1,740 (630 ~ 1,740) 2,150 (630 ~ 2,150) 2,150 (630 ~ 2,150) 2,150 (630 ~ 2,150) Heating capacity (BTU/h) Indoor units combination Unit A Unit B 09 10,900 – 12 13,600 – 15 18,000 – 09+09 10,900 10,900 09+12 9,500 12,500 09+15 8,250 13,750 12+12 11,000 11,000 Total Power consumption (W) 10,900 (5,200 ~ 15,400) 13,600 (5,200 ~ 16,400) 18,000 (5,200 ~ 21,100) 21,800 (8,500 ~ 21,800) 22,000 (8,500 ~ 22,000) 22,000 (8,500 ~ 22,000) 22,000 (8,500 ~ 22,000) 940 (480 ~ 1,430) 1,180 (480 ~1,460) 1,720 (480 ~ 2,100) 1,820 (520 ~ 1,820) 1,780 (520 ~ 1,780) 1,780 (520 ~ 1,780) 1,780 (520 ~ 1,780) 7 Current (A) 208 V 230 V Power factor (%) 3.69 3.34 95 5.01 4.53 95 7.79 7.05 95 8.62 7.80 97 10.66 9.64 97 10.66 9.64 97 10.66 9.64 97 Current (A) 208 V 230 V Power factor (%) 4.76 4.30 95 5.97 5.40 95 8.70 7.87 95 9.02 8.16 97 8.82 7.98 97 8.82 7.98 97 8.82 7.98 97 MXZ-3A30NA MXZ-3A30NA - 1 Cooling capacity (BTU/h) Indoor units combination Unit A Unit B Unit C 09 9,000 – – 12 12,000 – – 15 15,000 – – 17 16,200 – – 24 22,000 – – 09+09 9,000 9,000 – 09+12 9,000 12,000 – 09+15 9,000 15,000 – 09+17 9,000 16,200 – 09+24 7,600 20,400 – 12+12 12,000 12,000 – 12+15 11,500 14,500 – 12+17 10,800 15,200 – 15+15 13,000 13,000 – 15+17 12,200 13,800 – 17+17 13,000 13,000 – 09+09+09 9,000 9,000 9,000 09+09+12 8,500 8,500 11,400 09+09+15 7,750 7,750 12,900 09+09+17 7,300 7,300 13,800 Total Power consumption (W) 9,000 (7,200 ~ 9,000) 12,000 (7,200 ~ 12,000) 15,000 (7,200 ~ 15,000) 16,200 (7,200 ~ 16,200) 22,000 (7,200 ~ 22,000) 18,000 (12,000 ~ 18,000) 21,000 (12,000 ~ 21,000) 24,000 (12,000 ~ 24,000) 25,200 (12,000 ~ 25,200) 28,000 (12,000 ~ 28,000) 24,000 (12,000 ~ 24,000) 26,000 (12,000 ~ 26,000) 26,000 (12,000 ~ 26,000) 26,000 (12,000 ~ 26,000) 26,000 (12,000 ~ 26,000) 26,000 (12,000 ~ 26,000) 27,000 (12,600 ~ 27,000) 28,400 (12,600 ~ 28,400) 28,400 (12,600 ~ 28,400) 28,400 (12,600 ~ 28,400) 800 (650 ~ 800) 1,000 (650 ~ 1,000) 1,320 (650 ~ 1,320) 1,480 (650 ~ 1,480) 2,220 (650 ~ 2,200) 1,800 (920 ~ 1,800) 2,000 (920 ~ 2,000) 2,500 (920 ~ 2,500) 2,700 (920 ~ 2,700) 3,200 (920 ~ 3,200) 2,500 (920 ~ 2,500) 2,800 (920 ~ 2,800) 2,800 (920 ~ 2,800) 2,800 (920 ~ 2,800) 2,800 (920 ~ 2,800) 2,800 (920 ~ 2,800) 2,860 (1,000 ~ 2,850) 3,250 (1,000 ~ 3,250) 3,250 (1,000 ~ 3,250) 3,250 (1,000 ~ 3,250) 8 Current (A) 208 V 230 V Power factor (%) 4.05 3.66 95 5.06 4.58 95 6.68 6.04 95 7.49 6.77 95 11.13 10.07 95 8.92 8.07 97 9.91 8.96 97 12.39 11.21 97 13.38 12.10 97 15.86 14.34 97 12.39 11.21 97 13.88 12.55 97 13.88 12.55 97 13.88 12.55 97 13.88 12.55 97 13.88 12.55 97 14.18 12.82 97 16.11 14.57 97 16.11 14.57 97 16.11 14.57 97 Heating capacity (BTU/h) Indoor units combination Unit A Unit B Unit C 09 10,900 – – 12 13,600 – – 15 18,000 – – 17 20,100 – – 24 23,200 – – 09+09 10,900 10,900 – 09+12 10,900 13,600 – 09+15 10,100 16,900 – 09+17 9,300 17,700 – 09+24 7,300 19,700 – 12+12 13,500 13,500 – 12+15 12,000 15,000 – 12+17 11,200 15,800 – 15+15 13,500 13,500 – 15+17 12,700 14,300 – 17+17 13,500 13,500 – 09+09+09 9,500 9,500 9,500 09+09+12 8,600 8,600 11,400 09+09+15 7,800 7,800 13,000 09+09+17 7,350 7,350 13,900 Total Power consumption (W) 10,900 (8,600 ~ 15,400) 13,600 (8,600 ~ 16,400) 18,000 (8,600 ~ 21,100) 20,100 (8,600 ~ 21,500) 23,200 (8,600 ~ 27,800) 21,800 (11,000 ~ 31,000) 24,500 (11,000 ~ 33,000) 27,000 (11,000 ~ 35,000) 27,000 (11,000 ~ 35,000) 27,000 (11,000 ~ 35,000) 27,000 (11,000 ~ 35,000) 27,000 (11,000 ~ 35,000) 27,000 (11,000 ~ 35,000) 27,000 (11,000 ~ 35,000) 27,000 (11,000 ~ 35,000) 27,000 (11,000 ~ 35,000) 28,500 (11,400 ~ 36,000) 28,600 (11,400 ~ 36,000) 28,600 (11,400 ~ 36,000) 28,600 (11,400 ~ 36,000) 1,100 (780 ~1,520) 1,380 (780 ~ 1,600) 1,940 (780 ~ 2,280) 2,240 (780 ~ 2,300) 2,520 (780 ~ 3,000) 1,700 (740 ~2,560) 1,980 (740 ~ 2,800) 2,200 (740 ~ 2,920) 2,200 (740 ~ 2,920) 1,980 (740 ~ 2,740) 2,200 (740 ~ 2,920) 2,160 (740 ~ 2,860) 2,140 (740 ~ 2,860) 2,120 (740 ~ 2,800) 2,110 (740 ~ 2,800) 2,100 (740 ~ 2,800) 2,180 (740 ~ 2,880) 2,180 (740 ~ 2,880) 2,180 (740 ~ 2,880) 2,180 (740 ~ 2,880) 9 Current (A) 208 V 230 V Power factor (%) 5.57 5.03 95 6.98 6.32 95 9.82 8.88 95 11.34 10.25 95 12.75 11.53 95 8.43 7.62 97 9.81 8.87 97 10.90 9.86 97 10.90 9.86 97 9.81 8.87 97 10.90 9.86 97 10.71 9.68 97 10.61 9.59 97 10.51 9.50 97 10.46 9.46 97 10.41 9.41 97 10.80 9.77 97 10.80 9.77 97 10.80 9.77 97 10.80 9.77 97 MXZ-4A36NA 208 V Cooling capacity (BTU/h) Indoor units combination Unit A Unit B Unit C Unit D 09 9,000 – – – 12 12,000 – – – 15 15,000 – – – 17 16,200 – – – 24 22,000 – – – 09+09 9,000 9,000 – – 09+12 9,000 12,000 – – 09+15 9,000 15,000 – – 09+17 9,000 16,200 – – 09+24 7,600 20,400 – – 12+12 12,000 12,000 – – 12+15 11,500 14,500 – – 12+17 10,800 15,200 – – 15+15 13,000 13,000 – – 15+17 12,200 13,800 – – 17+17 13,000 13,000 – – 09+09+09 9,000 9,000 9,000 – 09+09+12 9,000 9,000 12,000 – 09+09+15 8,800 8,800 14,500 – 09+09+17 8,200 8,200 15,700 – 09+09+24 6,900 6,900 18,300 – 09+12+12 8,700 11,700 11,700 – Total Power consumption (W) 9,000 (7,200 ~ 9,000) 12,000 (7,200 ~ 12,000) 15,000 (7,200 ~ 15,000) 16,200 (7,200 ~ 16,200) 22,000 (7,200 ~ 22,000) 18,000 (12,000 ~ 18,000) 21,000 (12,000 ~ 21,000) 24,000 (12,000 ~ 24,000) 25,200 (12,000 ~ 25,200) 28,000 (12,000 ~ 28,000) 24,000 (12,000 ~ 24,000) 26,000 (12,000 ~ 26,000) 26,000 (12,000 ~ 26,000) 26,000 (12,000 ~ 26,000) 26,000 (12,000 ~ 26,000) 26,000 (12,000 ~ 26,000) 27,000 (12,600 ~ 27,000) 30,000 (12,600 ~ 30,000) 32,100 (12,600 ~ 32,100) 32,100 (12,600 ~ 32,100) 32,100 (12,600 ~ 32,100) 32,100 (12,600 ~ 32,100) 800 (650 ~ 800) 1,000 (650 ~ 1,000) 1,320 (650 ~ 1,320) 1,480 (650 ~ 1,480) 2,200 (650 ~ 2,200) 1,800 (920 ~ 1,800) 2,000 (920 ~ 2,000) 2,500 (920 ~ 2,500) 2,700 (920 ~ 2,700) 3,200 (920 ~ 3,200) 2,500 (920 ~ 2,500) 2,800 (920 ~ 2,800) 2,800 (920 ~ 2,800) 2,800 (920 ~ 2,800) 2,800 (920 ~ 2,800) 2,800 (920 ~ 2,800) 2,860 (1,000 ~ 2,850) 3,270 (1,000 ~ 3,270) 3,500 (1,000 ~ 3,500) 3,500 (1,000 ~ 3,500) 3,500 (1,000 ~ 3,500) 3,500 (1,000 ~ 3,500) 10 Current (A) 208 V Power factor (%) 4.05 95 5.06 95 6.68 95 7.49 95 11.13 95 8.92 97 9.91 97 12.39 97 13.38 97 15.86 97 12.39 97 13.88 97 13.88 97 13.88 97 13.88 97 13.88 97 14.18 97 16.21 97 17.35 97 17.35 97 17.35 97 17.35 97 Cooling capacity (BTU/h) Indoor units combination Unit A Unit B Unit C 09+12+15 8,000 10,700 13,400 09+12+17 7,600 10,100 14,400 09+15+15 7,500 12,300 12,300 09+15+17 7,100 11,700 13,300 09+17+17 6,700 12,700 12,700 12+12+12 10,700 10,700 10,700 12+12+15 9,900 9,900 12,300 12+12+17 9,400 9,400 13,300 12+15+15 9,100 11,500 11,500 09+09+09+09 9,000 9,000 9,000 09+09+09+12 8,300 8,300 8,300 09+09+09+15 7,700 7,700 7,700 09+09+12+12 7,700 7,700 10,300 Total Unit D 32,100 (12,600 ~ 32,100) 32,100 – (12,600 ~ 32,100) 32,100 – (12,600 ~ 32,100) 32,100 – (12,600 ~ 32,100) 32,100 – (12,600 ~ 32,100) 32,100 – (12,600 ~ 32,100) 32,100 – (12,600 ~ 32,100) 32,100 – (12,600 ~ 32,100) 32,100 – (12,600 ~ 32,100) 36,000 9,000 (12,600 ~ 36,400) 36,000 11,100 (12,600 ~ 36,400) 36,000 12,900 (12,600 ~ 36,400) 36,000 10,300 (12,600 ~ 36,400) – 11 Power consumption (W) 3,500 (1,000 ~ 3,500) 3,500 (1,000 ~ 3,500) 3,500 (1,000 ~ 3,500) 3,500 (1,000 ~ 3,500) 3,500 (1,000 ~ 3,500) 3,500 (1,000 ~ 3,500) 3,500 (1,000 ~ 3,500) 3,500 (1,000 ~ 3,500) 3,500 (1,000 ~ 3,500) 3,820 (1,000 ~ 3,900) 3,820 (1,000 ~ 3,900) 3,820 (1,000 ~ 3,900) 3,820 (1,000 ~ 3,900) Current (A) 208 V Power factor (%) 17.35 97 17.35 97 17.35 97 17.35 97 17.35 97 17.35 97 17.35 97 17.35 97 17.35 97 18.55 99 18.55 99 18.55 99 18.55 99 Heating capacity (BTU/h) Indoor units combination Unit A Unit B Unit C Unit D 09 10,900 – – – 12 13,600 – – – 15 18,000 – – – 17 20,100 – – – 24 23,200 – – – 09+09 10,900 10,900 – – 09+12 10,900 13,600 – – 09+15 10,100 16,900 – – 09+17 9,300 17,700 – – 09+24 7,300 19,700 – – 12+12 13,500 13,500 – – 12+15 12,000 15,000 – – 12+17 11,200 15,800 – – 15+15 13,500 13,500 – – 15+17 12,700 14,300 – – 17+17 13,500 13,500 – – 09+09+09 10,800 10,800 10,800 – 09+09+12 10,000 10,000 12,400 – 09+09+15 8,900 8,900 14,600 – 09+09+17 8,400 8,400 15,600 – 09+09+24 7,800 7,800 16,800 – 09+12+12 9,400 11,500 11,500 – 09+12+15 8,300 10,400 13,700 – Total Power consumption (W) 10,900 (8,600 ~ 15,400) 13,600 (8,600 ~ 16,400) 18,000 (8,600 ~ 21,100) 20,100 (8,600 ~ 21,500) 23,200 (8,600 ~ 27,800) 21,800 (11,000 ~ 31,000) 24,500 (11,000 ~ 33,000) 27,000 (11,000 ~ 35,000) 27,000 (11,000 ~ 35,000) 27,000 (11,000 ~ 35,000) 27,000 (11,000 ~ 35,000) 27,000 (11,000 ~ 35,000) 27,000 (11,000 ~ 35,000) 27,000 (11,000 ~ 35,000) 27,000 (11,000 ~ 35,000) 27,000 (11,000 ~ 35,000) 32,400 (11,400 ~ 36,000) 32,400 (11,400 ~ 36,000) 32,400 (11,400 ~ 36,000) 32,400 (11,400 ~ 36,000) 32,400 (11,400 ~ 36,000) 32,400 (11,400 ~ 36,000) 32,400 (11,400 ~ 36,000) 1,100 (780 ~1,520) 1,380 (780 ~ 1,600) 1,940 (780 ~ 2,280) 2,240 (780 ~ 2,300) 2,520 (780 ~ 3,000) 1,700 (740 ~2,560) 1,980 (740 ~ 2,800) 2,200 (740 ~ 2,920) 2,200 (740 ~ 2,920) 1,980 (740 ~ 2,740) 2,200 (740 ~ 2,920) 2,160 (740 ~ 2,860) 2,140 (740 ~ 2,860) 2,120 (740 ~ 2,800) 2,110 (740 ~ 2,800) 2,100 (740 ~ 2,800) 2,700 (740 ~ 2,880) 2,700 (740 ~ 2,880) 2,700 (740 ~ 2,880) 2,700 (740 ~ 2,880) 2,700 (740 ~ 2,880) 2,700 (740 ~ 2,880) 2,700 (740 ~ 2,880) 12 Current (A) 208 V Power factor (%) 5.57 95 6.98 95 9.82 95 11.34 95 12.75 95 8.43 97 9.81 97 10.90 97 10.90 97 9.81 97 10.90 97 10.71 97 10.61 97 10.51 97 10.46 97 10.41 97 13.38 97 13.38 97 13.38 97 13.38 97 13.38 97 13.38 97 13.38 97 Heating capacity (BTU/h) Indoor units combination Unit A Unit B Unit C Unit D 09+12+17 7,900 9,900 14,600 – 09+15+15 7,600 12,400 12,400 – 09+15+17 7,200 11,900 13,300 – 09+17+17 7,000 12,700 12,700 – 12+12+12 10,800 10,800 10,800 – 12+12+15 9,700 9,700 13,000 – 12+12+17 9,300 9,300 13,800 – 12+15+15 9,000 11,700 11,700 – 09+09+09+09 9,000 9,000 9,000 9,000 09+09+09+12 8,300 8,300 8,300 11,100 09+09+09+15 7,700 7,700 7,700 12,900 09+09+12+12 7,700 7,700 10,300 10,300 Total Power consumption (W) 32,400 (11,400 ~ 36,000) 32,400 (11,400 ~ 36,000) 32,400 (11,400 ~ 36,000) 32,400 (11,400 ~ 36,000) 32,400 (11,400 ~ 36,000) 32,400 (11,400 ~ 36,000) 32,400 (11,400 ~ 36,000) 32,400 (11,400 ~ 36,000) 36,000 (11,400 ~ 41,200) 36,000 (11,400 ~ 41,200) 36,000 (11,400 ~ 41,200) 36,000 (11,400 ~ 41,200) 2,700 (740 ~ 2,880) 2,700 (740 ~ 2,880) 2,700 (740 ~ 2,880) 2,700 (740 ~ 2,880) 2,700 (740 ~ 2,880) 2,700 (740 ~ 2,880) 2,700 (740 ~ 2,880) 2,700 (740 ~ 2,880) 3,100 (740 ~ 4,000) 3,100 (740 ~ 4,000) 3,100 (740 ~ 4,000) 3,100 (740 ~ 4,000) 13 Current (A) 208 V Power factor (%) 13.38 97 13.38 97 13.38 97 13.38 97 13.38 97 13.38 97 13.38 97 13.38 97 15.05 99 15.05 99 15.05 99 15.05 99 MXZ-4A36NA 230 V Cooling capacity (BTU/h) Indoor units combination Unit A Unit B Unit C Unit D 09 9,000 – – – 12 12,000 – – – 15 15,000 – – – 17 16,200 – – – 24 22,000 – – – 09+09 9,000 9,000 – – 09+12 9,000 12,000 – – 09+15 9,000 15,000 – – 09+17 9,000 16,200 – – 09+24 7,600 20,400 – – 12+12 12,000 12,000 – – 12+15 11,500 14,500 – – 12+17 10,800 15,200 – – 15+15 13,000 13,000 – – 15+17 12,200 13,800 – – 17+17 13,000 13,000 – – 09+09+09 9,000 9,000 9,000 – 09+09+12 9,000 9,000 12,000 – 09+09+15 8,800 8,800 14,500 – 09+09+17 8,200 8,200 15,700 – 09+09+24 6,900 6,900 18,300 – 09+12+12 8,700 11,700 11,700 – Total Power consumption (W) 9,000 (7,200 ~ 9,000) 12,000 (7,200 ~ 12,000) 15,000 (7,200 ~ 15,000) 16,200 (7,200 ~ 16,200) 22,000 (7,200 ~ 22,000) 18,000 (12,000 ~ 18,000) 21,000 (12,000 ~ 21,000) 24,000 (12,000 ~ 24,000) 25,200 (12,000 ~ 25,200) 28,000 (12,000 ~ 28,000) 24,000 (12,000 ~ 24,000) 26,000 (12,000 ~ 26,000) 26,000 (12,000 ~ 26,000) 26,000 (12,000 ~ 26,000) 26,000 (12,000 ~ 26,000) 26,000 (12,000 ~ 26,000) 27,000 (12,600 ~ 27,000) 30,000 (12,600 ~ 30,000) 32,100 (12,600 ~ 32,100) 32,100 (12,600 ~ 32,100) 32,100 (12,600 ~ 32,100) 32,100 (12,600 ~ 32,100) 800 (650 ~ 800) 1,000 (650 ~ 1,000) 1,320 (650 ~ 1,320) 1,480 (650 ~ 1,480) 2,200 (650 ~ 2,200) 1,800 (920 ~ 1,800) 2,000 (920 ~ 2,000) 2,500 (920 ~ 2,500) 2,700 (920 ~ 2,700) 3,200 (920 ~ 3,200) 2,500 (920 ~ 2,500) 2,800 (920 ~ 2,800) 2,800 (920 ~ 2,800) 2,800 (920 ~ 2,800) 2,800 (920 ~ 2,800) 2,800 (920 ~ 2,800) 2,860 (1,000 ~ 2,850) 3,270 (1,000 ~ 3,270) 3,500 (1,000 ~ 3,500) 3,500 (1,000 ~ 3,500) 3,500 (1,000 ~ 3,500) 3,500 (1,000 ~ 3,500) 14 Current (A) 230 V Power factor (%) 3.66 95 4.58 95 6.04 95 6.77 95 10.07 95 8.07 97 8.96 97 11.21 97 12.10 97 14.34 97 11.21 97 12.55 97 12.55 97 12.55 97 12.55 97 12.55 97 12.82 97 14.66 97 15.69 97 15.69 97 15.69 97 15.69 97 Cooling capacity (BTU/h) Indoor units combination Unit A Unit B Unit C 09+12+15 8,000 10,700 13,400 09+12+17 7,600 10,100 14,400 09+15+15 7,500 12,300 12,300 09+15+17 7,100 11,700 13,300 09+17+17 6,700 12,700 12,700 12+12+12 10,700 10,700 10,700 12+12+15 9,900 9,900 12,300 12+12+17 9,400 9,400 13,300 12+15+15 9,100 11,500 11,500 09+09+09+09 9,000 9,000 9,000 09+09+09+12 8,300 8,300 8,300 09+09+09+15 7,700 7,700 7,700 09+09+12+12 7,700 7,700 10,300 Total Unit D 32,100 (12,600 ~ 32,100) 32,100 – (12,600 ~ 32,100) 32,100 – (12,600 ~ 32,100) 32,100 – (12,600 ~ 32,100) 32,100 – (12,600 ~ 32,100) 32,100 – (12,600 ~ 32,100) 32,100 – (12,600 ~ 32,100) 32,100 – (12,600 ~ 32,100) 32,100 – (12,600 ~ 32,100) 36,000 9,000 (12,600 ~ 36,400) 36,000 11,100 (12,600 ~ 36,400) 36,000 12,900 (12,600 ~ 36,400) 36,000 10,300 (12,600 ~ 36,400) – 15 Power consumption (W) 3,500 (1,000 ~ 3,500) 3,500 (1,000 ~ 3,500) 3,500 (1,000 ~ 3,500) 3,500 (1,000 ~ 3,500) 3,500 (1,000 ~ 3,500) 3,500 (1,000 ~ 3,500) 3,500 (1,000 ~ 3,500) 3,500 (1,000 ~ 3,500) 3,500 (1,000 ~ 3,500) 3,820 (1,000 ~ 3,900) 3,820 (1,000 ~ 3,900) 3,820 (1,000 ~ 3,900) 3,820 (1,000 ~ 3,900) Current (A) 230 V Power factor (%) 15.69 97 15.69 97 15.69 97 15.69 97 15.69 97 15.69 97 15.69 97 15.69 97 15.69 97 16.78 99 16.78 99 16.78 99 16.78 99 Heating capacity (BTU/h) Indoor units combination Unit A Unit B Unit C Unit D 09 10,900 – – – 12 13,600 – – – 15 18,000 – – – 17 20,100 – – – 24 23,200 – – – 09+09 10,900 10,900 – – 09+12 10,900 13,600 – – 09+15 10,100 16,900 – – 09+17 9,300 17,700 – – 09+24 7,300 19,700 – – 12+12 13,500 13,500 – – 12+15 12,000 15,000 – – 12+17 11,200 15,800 – – 15+15 13,500 13,500 – – 15+17 12,700 14,300 – – 17+17 13,500 13,500 – – 09+09+09 10,800 10,800 10,800 – 09+09+12 10,000 10,000 12,400 – 09+09+15 8,900 8,900 14,600 – 09+09+17 8,400 8,400 15,600 – 09+09+24 7,800 7,800 16,800 – 09+12+12 9,400 11,500 11,500 – 09+12+15 8,300 10,400 13,700 – Total Power consumption (W) 10,900 (8,600 ~ 15,400) 13,600 (8,600 ~ 16,400) 18,000 (8,600 ~ 21,100) 20,100 (8,600 ~ 21,500) 23,200 (8,600 ~ 27,800) 21,800 (11,000 ~ 31,000) 24,500 (11,000 ~ 33,000) 27,000 (11,000 ~ 35,000) 27,000 (11,000 ~ 35,000) 27,000 (11,000 ~ 35,000) 27,000 (11,000 ~ 35,000) 27,000 (11,000 ~ 35,000) 27,000 (11,000 ~ 35,000) 27,000 (11,000 ~ 35,000) 27,000 (11,000 ~ 35,000) 27,000 (11,000 ~ 35,000) 32,400 (11,400 ~ 36,000) 32,400 (11,400 ~ 36,000) 32,400 (11,400 ~ 36,000) 32,400 (11,400 ~ 36,000) 32,400 (11,400 ~ 36,000) 32,400 (11,400 ~ 36,000) 32,400 (11,400 ~ 36,000) 1,100 (780 ~1,520) 1,380 (780 ~ 1,600) 1,940 (780 ~ 2,280) 2,240 (780 ~ 2,300) 2,520 (780 ~ 3,000) 1,700 (740 ~2,560) 1,980 (740 ~ 2,800) 2,200 (740 ~ 2,920) 2,200 (740 ~ 2,920) 1,980 (740 ~ 2,740) 2,200 (740 ~ 2,920) 2,160 (740 ~ 2,860) 2,140 (740 ~ 2,860) 2,120 (740 ~ 2,800) 2,110 (740 ~ 2,800) 2,100 (740 ~ 2,800) 2,700 (740 ~ 2,880) 2,700 (740 ~ 2,880) 2,700 (740 ~ 2,880) 2,700 (740 ~ 2,880) 2,700 (740 ~ 2,880) 2,700 (740 ~ 2,880) 2,700 (740 ~ 2,880) 16 Current (A) 230 V Power factor (%) 5.03 95 6.32 95 8.88 95 10.25 95 11.53 95 7.62 97 8.87 97 9.86 97 9.86 97 8.87 97 9.86 97 9.68 97 9.59 97 9.50 97 9.46 97 9.41 97 12.10 97 12.10 97 12.10 97 12.10 97 12.10 97 12.10 97 12.10 97 Heating capacity (BTU/h) Indoor units combination Unit A Unit B Unit C Unit D 09+12+17 7,900 9,900 14,600 – 09+15+15 7,600 12,400 12,400 – 09+15+17 7,200 11,900 13,300 – 09+17+17 7,000 12,700 12,700 – 12+12+12 10,800 10,800 10,800 – 12+12+15 9,700 9,700 13,000 – 12+12+17 9,300 9,300 13,800 – 12+15+15 9,000 11,700 11,700 – 09+09+09+09 9,000 9,000 9,000 9,000 09+09+09+12 8,300 8,300 8,300 11,100 09+09+09+15 7,700 7,700 7,700 12,900 09+09+12+12 7,700 7,700 10,300 10,300 Total Power consumption (W) 32,400 (11,400 ~ 36,000) 32,400 (11,400 ~ 36,000) 32,400 (11,400 ~ 36,000) 32,400 (11,400 ~ 36,000) 32,400 (11,400 ~ 36,000) 32,400 (11,400 ~ 36,000) 32,400 (11,400 ~ 36,000) 32,400 (11,400 ~ 36,000) 36,000 (11,400 ~ 43,000) 36,000 (11,400 ~ 43,000) 36,000 (11,400 ~ 43,000) 36,000 (11,400 ~ 43,000) 2,700 (740 ~ 2,880) 2,700 (740 ~ 2,880) 2,700 (740 ~ 2,880) 2,700 (740 ~ 2,880) 2,700 (740 ~ 2,880) 2,700 (740 ~ 2,880) 2,700 (740 ~ 2,880) 2,700 (740 ~ 2,880) 3,100 (740 ~ 4,350) 3,100 (740 ~ 4,350) 3,100 (740 ~ 4,350) 3,100 (740 ~ 4,350) 17 Current (A) 230 V Power factor (%) 12.10 97 12.10 97 12.10 97 12.10 97 12.10 97 12.10 97 12.10 97 12.10 97 13.61 99 13.61 99 13.61 99 13.61 99 4 SPECIFICATION Item Capacity Power consumption Cooling Heating 47 Heating 17 Cooling Heating 47 Heating 17 Cooling Heating Heating EER [SEER] HSPF IV (V) COP External finish Power supply Max. fuse size (time delay) Min. circuit ampacity Fan motor Model Btu/h Btu/h Btu/h W W W V, phase, Hz A A F.L.A Model Compressor Winding resistance (at 68°F) Ω R.L.A L.R.A Refrigerant control Sound level Defrost method Dimensions dB(A) in. in. in. lb. W D H Weight Remote controller Control voltage (by built-in transformer) Refrigerant piping Liquid Valve size Gas Indoor Connection method Outdoor Refrigerant charge (R410A) in. in. lb. oz. Refrigeration oil (Model) MXZ-2A20NA MXZ-2A20NA - 1 MXZ-2A20NA 20,000/ (7,800 ~ 20,000) 22,000/ (8,500 ~ 22,000) 14,500 2,150/ (630 ~ 2,150) 1,780/ (520 ~ 1,780) 1,500 (1,500) 9.3 [16.0] 8.5 (7.0) 3.63 Munsell 5Y 8/1 208/230, 1, 60 20 15 0.96 MXZ-2A20NA SNB130FPDH1 MXZ-2A20NA - 1 , 2 SNB130FQBH1 U-V 0.45 V-W 0.45 W-U 0.45 MXZ-2A20NA MXZ-2A20NA - 1 , 2 U-V 0.98 V-W 0.98 W-U 0.98 10.1 15 LEV 49/51 Reverse cycle 33-1/16 13 27-15/16 130 Wireless type 12-24 V DC Not supplied (optional parts) 1/4 A,B: 3/8 Flared Flared 5 lb. 15 oz. 20.3 (NEO22) MXZ-2A20NA 23.7 (NEO22) MXZ-2A20NA - 1 , 2 2 NOTE : Test conditions are based on ARI 210/240. 1 : Rating conditions (cooling) — Indoor : 80˚FDB, 67˚FWB, Outdoor : 95˚FDB, (75˚FWB) (heating) — Indoor : 70˚FDB, 60˚FWB, Outdoor : 47˚FDB, 43˚FWB 2: (heating) — Indoor : 70˚FDB, 60˚FWB, Outdoor : 17˚FDB, 15˚FWB 3: (cooling) — Indoor : 80˚FDB, 67˚FWB, Outdoor : 82˚FDB, 65˚FWB Unit: °F Mode Indoor air condition Outdoor air condition Dry bulb Wet bulb Dry bulb Wet bulb Test Cooling 80 67 95 1: "A" Cooling steady state at rated compressor speed 80 67 82 3: "B-2" Cooling steady state at rated compressor speed 80 67 82 "B-1" Cooling steady state at minimum compressor speed 80 67 67 Low ambient cooling steady state at minimum compressor speed 80 67 87 Intermediate cooling steady state at intermediate compressor speed 70 60 47 1: Standard rating-heating at rated compressor speed Heating 70 60 17 2: Low temperature heating at rated compressor speed 70 60 62 Max. temperature heating at minimum compressor speed 70 60 47 High temperature heating at minimum compressor speed 70 60 35 Frost accumulation at rated compressor speed 70 60 35 Frost accumulation at intermediate compressor speed At intermediate compressor speed =("Cooling rated compressor speed" - "minimum compressor speed") / 3 + "minimum compressor speed". 18 (75) (65) (65) (53.5) (69) 43 15 56.5 43 33 33 Item Capacity Power consumption Cooling Heating 47 Heating 17 Cooling Heating 47 Heating 17 Cooling Heating Heating Model Btu/h Btu/h Btu/h W W W EER [SEER] HSPF IV (V) COP External finish Power supply V, phase, Hz Max. fuse size (time delay) A Min. circuit ampacity A Fan motor F.L.A Model Winding resistance (at 68°F) Ω Compressor R.L.A L.R.A Refrigerant control Sound level dB(A) Defrost method W in. D Dimensions in. H in. Weight lb. Remote controller Control voltage (by built-in transformer) Refrigerant piping Liquid Valve size Gas Indoor Connection method Outdoor Refrigerant charge (R410A) Refrigeration oil (Model) MXZ-3A30NA MXZ-3A30NA - in. in. lb. oz. 1 MXZ-3A30NA MXZ-3A30NA - 1 28,400/ (12,600 ~ 28,400) 28,600/ (11,400 ~ 36,000) 18,800 3,250/ (1,000 ~ 3,250) 2,180/ (740 ~ 2,880) 2,120 8.7 [16.0] 10.0 (7.5) 3.84 Munsell 3.0Y 7.8/1.1 208/230, 1, 60 20 15 0.93 TNB220FMCH U-V 0.61 V-W 0.61 W-U 0.61 11 15 LEV 49/49 Reverse cycle 35-7/16 12-19/32 35-7/16 158 148 Wireless type 12-24 V DC Not supplied (optional parts) 1/4 A: 1/2 B,C: 3/8 Flared Flared 7 lb. 11 oz. 29.4 (NEO22) NOTE : Test conditions are based on ARI 210/240. 1 : Rating conditions (cooling) — Indoor : 80˚FDB, 67˚FWB, Outdoor : 95˚FDB, (75˚FWB) (heating) — Indoor : 70˚FDB, 60˚FWB, Outdoor : 47˚FDB, 43˚FWB 2: (heating) — Indoor : 70˚FDB, 60˚FWB, Outdoor : 17˚FDB, 15˚FWB 3: (cooling) — Indoor : 80˚FDB, 67˚FWB, Outdoor : 82˚FDB, 65˚FWB Unit: °F Mode Indoor air condition Outdoor air condition Dry bulb Wet bulb Dry bulb Wet bulb Test Cooling 80 67 95 1: "A" Cooling steady state at rated compressor speed 80 67 82 3: "B-2" Cooling steady state at rated compressor speed 80 67 82 "B-1" Cooling steady state at minimum compressor speed 80 67 67 Low ambient cooling steady state at minimum compressor speed 80 67 87 Intermediate cooling steady state at intermediate compressor speed 70 60 47 1: Standard rating-heating at rated compressor speed Heating 70 60 17 2: Low temperature heating at rated compressor speed 70 60 62 Max. temperature heating at minimum compressor speed 70 60 47 High temperature heating at minimum compressor speed 70 60 35 Frost accumulation at rated compressor speed 70 60 35 Frost accumulation at intermediate compressor speed At intermediate compressor speed =("Cooling rated compressor speed" - "minimum compressor speed") / 3 + "minimum compressor speed". 19 (75) (65) (65) (53.5) (69) 43 15 56.5 43 33 33 Item Capacity Power consumption Cooling Heating 47 Heating 17 Cooling Heating 47 Heating 17 Cooling Heating Heating Model Btu/h Btu/h Btu/h W W W EER [SEER] HSPF IV (V) COP External finish Power supply V, phase, Hz Max. fuse size (time delay) A Min. circuit ampacity A Fan motor F.L.A Model Winding resistance (at 68°F) Ω Compressor R.L.A L.R.A Refrigerant control Sound level dB(A) Defrost method W in. D Dimensions in. H in. Weight lb. Remote controller Control voltage (by built-in transformer) Refrigerant piping Liquid in. Valve size Gas in. Indoor Connection method Outdoor Refrigerant charge (R410A) lb. Refrigeration oil (Model) oz. MXZ-4A36NA 36,000/ (12,600 ~ 36,400) 208 V 36,000/ (11,400 ~ 41,200) 230 V 36,000/ (11,400 ~ 43,000) 24,600 3,820/ (1,000 ~ 3,900) 230 V 3,100/ (740 ~ 4,350) 208 V 3,100/ (740 ~ 4,000) 3,340 9.4 [16.0] 8.5 (7.0) 3.40 Munsell 3.0Y 7.8/1.1 208/230, 1, 60 20 19 0.93 TNB220FMCH U-V 0.61 V-W 0.61 W-U 0.61 14.4 15 LEV 54/57 Reverse cycle 35-7/16 12-19/32 35-7/16 150 Wireless type 12-24 V DC Not supplied (optional parts) 1/4 A: 1/2 B,C,D: 3/8 Flared Flared 8 lb. 13 oz. 29.4 (NEO22) NOTE : Test conditions are based on ARI 210/240. 1 : Rating conditions (cooling) — Indoor : 80˚FDB, 67˚FWB, Outdoor : 95˚FDB, (75˚FWB) (heating) — Indoor : 70˚FDB, 60˚FWB, Outdoor : 47˚FDB, 43˚FWB 2: (heating) — Indoor : 70˚FDB, 60˚FWB, Outdoor : 17˚FDB, 15˚FWB 3: (cooling) — Indoor : 80˚FDB, 67˚FWB, Outdoor : 82˚FDB, 65˚FWB Unit: °F Mode Indoor air condition Outdoor air condition Dry bulb Wet bulb Dry bulb Wet bulb Test Cooling 80 67 95 1: "A" Cooling steady state at rated compressor speed 80 67 82 3: "B-2" Cooling steady state at rated compressor speed 80 67 82 "B-1" Cooling steady state at minimum compressor speed 80 67 67 Low ambient cooling steady state at minimum compressor speed 80 67 87 Intermediate cooling steady state at intermediate compressor speed 70 60 47 1: Standard rating-heating at rated compressor speed Heating 70 60 17 2: Low temperature heating at rated compressor speed 70 60 62 Max. temperature heating at minimum compressor speed 70 60 47 High temperature heating at minimum compressor speed 70 60 35 Frost accumulation at rated compressor speed 70 60 35 Frost accumulation at intermediate compressor speed At intermediate compressor speed =("Cooling rated compressor speed" - "minimum compressor speed") / 3 + "minimum compressor speed". 20 (75) (65) (65) (53.5) (69) 43 15 56.5 43 33 33 OUTLINES AND DIMENSIONS 5 MXZ-2A20NA MXZ-2A20NA - Unit: inch 1 REQUIRED SPACE 6-9/16" 19-11/16" Open as a rule More than 19.69 in. if the front and both sides are open 6-21/32" 9-3/16" 11-11/32" 11/16" 11/16" 14-3/16" Drain hole 3- 1-5/16" Indoor and outdoor connect wiring 1-3/16" 3- 7/8" hole 1/2" B unit connection A unit connection 1" 1-3/16" 12-3/4" 27-15/16" 1-3/16" 13" More than 13.78 in. Gas pipe 3/8"flared (both A&B unit) 2-5/8" 5-5/16" 1-25/32" 29/32" 8-5/8" 1-3/16" 15/16" 11-3/4" Open as a rule More than 19.69 in. if the back, both sides and top are open 4-13/32" x 13/16" Oval hole (Base bolt M10) 33-1/16" More than 3.94 in. More than 7.87 in. if there are obstacles to both sides More than 3.94 in. 15-19/32" 1-1/2" 21/32" Air out 14-3/16" Air in Air in 1-7/32" 1-7/32" 2-1/2" Liquid pipe 1/4"flared (both A&B unit) Grounding terminal Conduit cover Lock nut 21 Connector Unit: inch 2 6-21/32" 11-11/32" Rear Air Intake 14-3/16" 13/16" 17/32" Side Air Intake 3- (1-5/16") Drain Hole 11/16" Air Discharge 15-19/32" 9-3/16" 1-7/32" 21/32" 2-1/2" 19-11/16" (Bolt Pitch) 6-9/16" 11/16" MXZ-2A20NA - 4-(13/32"×13/16") Oval Hole (Foundation Bolt M10) 33-1/16" 1-3/16" 7-7/8" 1-3/16" 13" 1/2" 3- 7/8" Punched holes (Connecting wire hole) 2-3/8" 2-5/8" LIQ 14-1/4" 5-5/16" 1-25/32" 14-3/16" 27-15/16" 1-3/16" 9-7/16" 1-5/32" GAS LIQ 29/32" 1.Installation space Note : Leave front and both sides clearance fully. More than 19-11/16" 11-3/4" LIQ 1/4"FLARE GAS 3/8"FLARE Unit A 3-5/16" GAS Unit B More than 3-15/16" Grounding terminal Conduit cover More than 7-7/8" More than 19-11/16" 2.Service space More than 3-15/16" More than13-25/32" More than 3-15/16" Note : Leave rear, overhead and both sides clearance fully. Lock nut Connector More than 19-11/16" Note : Leave front and overhead clearance fully. More than 3-15/16" More than 13-25/32" 22 SERVICE SPACE More than 13-25/32" MXZ-3A30NA Unit: inch REQUIRED SPACE Open as a rule More than 19.69 in. if the front and both sides are open 15-1/4" 1-3/16" 12-19/32" 2-15/32" x 1-13/32" Oval hole (Base bolt M10) Indoor and outdoor connect wiring 4- 7/8" hole 2-11/16" C unit connection 1-5/16" 35-7/16" 15" 18-1/8" 1-31/32" 9-27/32" 35-7/16" 12-1/2" 13/32" 29/32" B unit connection Gas pipe 3/8" flared (B,C unit) 1/2" flared (A unit) 29-9/16" Drain hole 3- 1-5/16" More than 13.78 in. Open as a rule More than 19.69 in. if the back, both sides and top are open 1-1/4" Air out 1-9/16" 2-29/32" Air in 13-31/32" (5/8") Air in (5/8") 1-3/8" 2-U-shape notched holes (Base bolt M10) More than 3.94 in. More than 7.87 in. if there are obstacles to both sides More than 3.94 in. 10-5/8" 3-25/32" 1-3/8" 9-27/32" (7-7/8") A unit connection 3-15/32" Liquid pipe 1/4" flared 29/32" 19-11/16" (1-1/16") 7-7/8" Lock nut Conduit cover Connector 23 Unit: inch 1 7-7/8" 7-7/8" 10-5/8" Air in 5/8" Air out 1-9/16" Drain hole 3- 1-5/16" 14" (Bolt pitch) 15-1/4" 15/16" 7/16" Air in 2-U Shaped notched hole (Base bolt M10) 5/8" 1-3/8" 1-3/8" 2-29/32" 9-27/32" 19-11/16" 1-1/16" MXZ-3A30NA - 2-(15/32" x 1-13/32") Oval hole (Base bolt M10) 3- 7/8"Punched hole (Connect wiring hole) 35-7/16" 2- 7/8"Knockout (Connect wiring hole) Handle 1-3/16" 12-19/32" 13/32" 19-1/8" B A Gas pipe 3/8 (B,C unit) 1/2 (A unit) C unit connection B unit connection A unit connection Liquid pipe 1/4 flared More than 3-15/16" More than 7-7/8" Lock nut Connector Conduit cover More than13-25/32" More than 19-11/16" More than 3-15/16" 2.Service space More than 19-11/16" Note : Leave front and overhead clearance fully. Note : Leave rear, overhead and both sides clearance fully. 3-15/32" C More than 3-15/16" Note : Leave front and both sides clearance fully. More than 19-11/16" 1.Installation space 29/32" 5-3/16" 12-1/2" 1-25/32" 18-1/8" 8-27/32" 35-7/16" 4-3/4" 1-3/16" Handle More than 3-15/16" More than 13-25/32" 24 SERVICE SPACE More than 13-25/32" MXZ-4A36NA Unit: inch 7-7/8" 7-7/8" 10-5/8" Air in 5/8" Air out 1-9/16" Drain hole 3- 1-5/16" 14" (Bolt pitch) 15-1/4" 5/8" 15/16" 7/16" Air in 2-U Shaped notched hole (Base bolt M10) 1-1/16" 1-3/8" 1-3/8" 2-29/32" 9-27/32" 19-11/16" 2-(15/32" x 1-13/32") Oval hole (Base bolt M10) 3- 7/8"Punched hole (Connect wiring hole) 35-7/16" 1-3/16" 2- 7/8"Knockout (Connect wiring hole) Handle 12-19/32" 13/32" 4-3/4" 35-7/16" D 19-1/8" C B A Gas pipe 3/8 (B,C,D unit) 1/2 (A unit) D unit connection C unit connection B unit connection A unit connection Liquid pipe 1/4 flared More than 3-15/16" Lock nut More than13-25/32" More than 19-11/16" More than 3-15/16" Conduit cover 2.Service space Connector More than 19-11/16" More than 7-7/8" Note : Leave front and overhead clearance fully. Note : Leave rear, overhead and both sides clearance fully. 3-15/32" More than 3-15/16" Note : Leave front and both sides clearance fully. More than 19-11/16" 1.Installation space 29/32" 5-3/16" 12-1/2" 1-25/32" 18-1/8" 12-13/32" 1-3/16" Handle More than 3-15/16" More than 13-25/32" 25 SERVICE SPACE More than 13-25/32" 6 WIRING DIAGRAM MXZ-2A20NA 26 MXZ-2A20NA - 1 27 MXZ-2A20NA - 2 28 MXZ-3A30NA 29 MXZ-3A30NA - 1 30 SYMBOL CB1~3 CT1,2 CT61 F64 F65 F801 F931 S3 S2 S1 TB2 S3 S2 S1 TB3 S3 S2 S1 TB4 S3 S2 S1 TB5 BLU BLK NAME SMOOTHING CAPACITOR CURRENT TRANSFORMER CURRENT TRANSFORMER FUSE(T2AL250V) FUSE(T6.3AL250V) FUSE(T3.15AL250V) FUSE(T3.15AL250V) 208/230V 1PH. 60Hz TO INDOOR UNIT No.A 12-24V CONNECTING 208/230V 1PH. 60Hz TO INDOOR UNIT No.B 12-24V CONNECTING 208/230V 1PH. 60Hz TO INDOOR UNIT No.C 12-24V CONNECTING 208/230V 1PH. 60Hz TO INDOOR UNIT No.D 12-24V CONNECTING L2 BLU BLU BLK BLU BLK POWER SUPPLY 208/230V 1phase 60Hz TB1 BLK L1 BLK BLU RED ORN GRY BRN CN631 MC LEV A~D LEV F SYMBOL HC930 HPS IPM L 1 2 3 1 2 3 TAB2 TAB1 NAME INTELLIGENT POWER MODULE HIGH PRESSURE SWITCH INTELLIGENT POWER MODULE REACTOR EXPANSION VALVE EXPANSION VALVE COMPRESSOR LEV D TAB4 3 3 WHT BLK BLK BLK 2 BLK CN681 1 2 HPS CN661 1 2 3 4 5 6 7 8 RT62 SSR61 RT68 SYMBOL RT61 RT62 RT64 RT65 RT61 4 YLW RED RT65 CN4 1 2 CN796 1 2 3 4 5 6 1 2 CN701 LEV F NAME DEFROST THERMISTOR DISCHARGE TEMP.THERMISTOR FIN TEMP.THERMISTOR AMBIENT TEMP.THERMISTOR OUTDOOR HEAT EXCHANGER TEMPERATURE THERMISTOR SOLENOID COIL RELAY RT68 CN663 1 2 S R CN5 1 1 2 3 4 5 6 7 CN702 L CONTROL P.C.BOARD SYMBOL NAME FAN MOTOR MF VARISTOR NR64 N/F NOISE FILTER PFC POWER FACTOR CONTROLLER RESISTOR R64A,B RESISTOR R930A,B RS1~4 RESISTOR LEV C LEV B ELECTRONIC 1 2 3 4 5 CN781 LEV A 21S4 1 2 3 4 5 CN901 R64B (GRN) CN794 1 2 3 4 5 6 BLK BLK 1 2 CN912 SSR61 NR64 R64A (BLU) CN793 1 2 3 4 5 6 LDE2 LDE1 N/F F64 (RED) CN792 1 2 3 4 5 6 F65 (WHT) CN791 1 2 3 4 5 6 CN61 1 2 3 GROUND N/F RED BRN BLU ORN YLW WHT 1 2 3 CN621 CN611 CN601 1 2 3 4 5 BLU BLU RED BRN BLU ORN YLW WHT BLU BLK BLK 2 1 7 6 5 4 3 2 1 CN2 BLK BLK N RED BRN BLU ORN YLW WHT RS2 RS1 F801 LD2 CB1 RS4 RS3 CB3 R930B R930A F931 1 2 3 CN801 LD1 CB2 POWER BOARD WHT SYMBOL NAME T801 TRANSFORMER TB1~5 TERMINAL BLOCK X64 RELAY 21S4 REVERSING VALVE SOLENOID COIL T801 PFC RED X64 RED RED BLK BLK BLK RED BRN BLU ORN YLW WHT BLK GRY GRY CT2 W V U CN932 CN931 U YLW BLU ORN PNK GRY BLK WHT RED BLK BLK RED WHT BLK NOTES: 1.About the indoor side electric wiring refer to the indoor unit electric wiring diagram for servicing. 2.Use copper conductors only (For field wiring). 3.Symbols below indicate. :Terminal block :connector HC930 BLK LD9 IPM CT1 CN3 1 2 CT61 GRY GRY BLK BLK BLK BLK BLK GRY GRY 31 3 2 1 1 2 CN902 5 4 3 2 1 1 2 CN903 RED BRN BLU ORN YLW WHT MF MC V W RT64 NOISE FILTER P.C.BOARD MXZ-4A36NA REFRIGERANT SYSTEM DIAGRAM 7 MXZ-2A20NA MXZ-2A20NA - Unit: mm 1 Service port Compressor R.V. coil OFF ON Indoor unit B Unit B gas pipe temperature thermistor * Discharge temperature thermistor RT62 Oil separator Capillary tube O.D.0.10 x I.D.0.02 x 39.37 Ball valve with service port Unit A gas pipe temperature thermistor * 4-way valve Muffler Outdoor heat exchanger temperature thermistor RT68 FAN-OUT HEX-OUT Indoor unit A Refrigerant flow in cooling Refrigerant flow in heating Service port Indoor unit A Ambient temperature thermistor RT65 Defrost thermistor RT61 Capillary tube O.D.0.16 x I.D.0.11 x 3.93 Strainer #100 Capillary tube O.D.0.14 x I.D.0.09 x 19.68 LEV A Ball valve Strainer #100 Strainer #100 LEV E Power receiver Indoor unit B Distributor Capillary tube O.D.0.16 x I.D.0.11 x 3.93 Strainer #100 * Except MXZ-2A20NA - MXZ-2A20NA - LEV B 1 . 2 Service port Compressor R.V. coil OFF ON Refrigerant flow in cooling Refrigerant flow in heating Oil separator Stop valve with service port Indoor unit B Discharge temperature thermistor RT62 Service port Capillary tube O.D.0.10 x I.D.0.02 x 39.37 4-way valve Muffler Indoor unit A Outdoor heat exchanger temperature thermistor RT68 HEX-OUT FAN-OUT Indoor unit A Defrost thermistor RT61 Capillary tube O.D.0.16 x I.D.0.11 x 3.93 Strainer #100 Capillary tube O.D.0.14 x I.D.0.09 x 19.68 LEV A Stop valve Strainer #100 LEV E Power receiver Indoor unit B Ambient temperature thermistor RT65 Capillary tube O.D.0.16 x I.D.0.11 x 3.93 Strainer #100 LEV B 32 Strainer #100 Distributor Operating Range Cooling Heating MXZ-2A20NA Maximum Minimum Maximum Minimum MXZ-2A20NA - MXZ-2A20NA - 1 2 Indoor intake air temperature Outdoor intake air temperature 115°FDB 95°FDB, 71°FWB 14°FDB 67°FDB, 57°FWB 75°FDB, 65°FWB 80°FDB, 67°FWB 14°FDB, 12°FWB 70°FDB, 60°FWB MAX. REFRIGERANT PIPING LENGTH & PIPE SIZE SELECTION MXZ-2A20NA MXZ-2A20NA - 1 MXZ-2A20NA - 2 Piping length each indoor unit (a, b) 82 ft. MAX. Total piping length (a+b) 164 ft. MAX. Bending point for each unit 25 MAX. Total bending point 60 MAX. It does not matter which unit is higher. Indoor units a Outdoor unit 49 ft. 49 ft. 33 ft. b Refrigerant pipe diameter is different according to indoor unit to be connected. When using extension pipes, refer to the tables below. When diameter of refrigerant pipe is different from that of outdoor unit union, use optional Different-diameter pipe. For further information on Different-diameter pipe, see 15-1. Unit : inch Outdoor unit union diameter Indoor unit class Extension pipe diameter For Liquid 1/4 Liquid 1/4 09 Indoor unit A Gas 3/8 Gas 3/8 Liquid 1/4 Liquid 1/4 12 Indoor unit B Gas 3/8 Gas 3/8 Liquid 1/4 15 Gas 1/2 33 Service port MXZ-3A30NA R.V. coil OFF ON Indoor unit C Indoor unit B Indoor unit A Refrigerant flow in cooling Refrigerant flow in heating Unit C gas pipe temperature thermistor Unit: mm Service Compressor port Discharge High-pressure temperature switch thermistor RT62 Oil separator Ball valve with service port Capillary tube O.D.0.10 x I.D.0.02 x 39.37 4-way valve Unit B gas pipe temperature thermistor Muffler Unit A gas pipe temperature thermistor Outdoor heat exchanger Ambient temperature thermistor Outdoor heat RT65 exchanger temperature thermistor RT68 Capillary tube O.D.0.16 x I.D.0.11 x 3.54 Indoor unit A Indoor unit B Indoor unit C Strainer #100 Strainer #100 LEV B Strainer #100 LEV C Ball valve Strainer #100 LEV E Strainer #100 Capillary tube O.D. 0.16 x I.D. 0.09 x 15.75 Distributor Power receiver Distributor MXZ-3A30NA R.V. coil OFF ON LEV A Defrost thermistor RT61 1 Unit: mm Service port Compressor Service port Discharge temperature Refrigerant flow in cooling High-pressure thermistor RT62 switch Refrigerant flow in heating Oil separator Indoor unit C Stop valve (with service port) Indoor unit B Indoor unit A Muffler Capillary tube O.D.0.10 x I.D.0.02 x 39.37 4-way valve Outdoor heat exchanger Outdoor heat exchanger temperature thermistor RT68 Capillary tube O.D.0.16 x I.D.0.11 x 3.94 Indoor unit A Indoor unit B Indoor unit C Strainer #100 LEV A Strainer #100 LEV B Strainer #100 LEV C Ambient temperature thermistor RT65 Defrost thermistor RT61 Stop valve Strainer #100 LEV F Power receiver 34 Strainer #100 Capillary tube O.D.0.12 x I.D.0.08 x 11.8 Distributor Operating Range MXZ-3A30NA MXZ-3A30NA - Indoor intake air temperature Outdoor intake air temperature 115°FDB 95°FDB, 71°FWB 14°FDB 67°FDB, 57°FWB 75°FDB, 65°FWB 80°FDB, 67°FWB 14°FDB, 12°FWB 70°FDB, 60°FWB Maximum Minimum Maximum Minimum Cooling Heating 1 MAX. REFRIGERANT PIPING LENGTH & PIPE SIZE SELECTION MXZ-3A30NA MXZ-3A30NA - 1 Piping length each indoor unit (a, b, c) 82 ft. MAX. Total piping length (a+b+c) 230 ft. MAX. Bending point for each unit 25 MAX. Total bending point 70 MAX. It does not matter which unit is higher. Indoor units a Outdoor unit b 33 ft. (MXZ-3A30NA) 49 ft. (MXZ-3A30NA - 1 ft. ) 33 (MXZ-3A30NA) 49 ft. (MXZ-3A30NA - 1 ) 33 ft. c Refrigerant pipe diameter is different according to indoor unit to be connected. When using extension pipes, refer to the tables below. When diameter of refrigerant pipe is different from that of outdoor unit union, use optional Different-diameter pipe. For further information on Different-diameter pipe, see 15-1. Unit : inch Indoor unit class 09 12 15 17 24 Outdoor unit union diameter Extension pipe diameter Liquid 1/4 For Liquid 1/4 Gas 3/8 Liquid 1/4 Gas 1/2 Gas 3/8 Liquid 1/4 Liquid 1/4 Gas 3/8 Gas 1/2 Liquid 1/4 Liquid 1/4 Gas 3/8 Gas 1/2 Liquid 1/4 Gas 5/8 Indoor unit A Indoor unit B Indoor unit C 35 MXZ-4A36NA R.V. coil OFF ON Unit: mm Service port Compressor Service port Discharge temperature Refrigerant flow in cooling High-pressure thermistor RT62 switch Refrigerant flow in heating Oil separator Indoor unit D Stop valve (with service port) Indoor unit C Indoor unit B Indoor unit A Capillary tube O.D.0.10 x I.D.0.02 x 39.37 4-way valve Muffler Outdoor heat exchanger Outdoor heat exchanger temperature thermistor RT68 Capillary tube O.D.0.16 x I.D.0.11 x 3.94 Indoor unit A Indoor unit B Indoor unit C Indoor unit D Strainer #100 Defrost thermistor RT61 LEV A Strainer #100 LEV B Strainer #100 LEV C Strainer #100 LEV D Ambient temperature thermistor RT65 Stop valve Strainer #100 LEV F Power receiver 36 Strainer #100 Capillary tube O.D.0.12 x I.D.0.08 x 11.8 Distributor Operating Range MXZ-4A36NA Indoor intake air temperature Outdoor intake air temperature 115°FDB 95°FDB, 71°FWB 14°FDB 67°FDB, 57°FWB 75°FDB, 65°FWB 80°FDB, 67°FWB 14°FDB, 12°FWB 70°FDB, 60°FWB Maximum Minimum Maximum Minimum Cooling Heating MAX. REFRIGERANT PIPING LENGTH & PIPE SIZE SELECTION MXZ-4A36NA Piping length each indoor unit (a, b, c, d) 82 ft. MAX. Total piping length (a+b+c+d) 230 ft. MAX. Bending point for each unit 25 MAX. Total bending point 70 MAX. It does not matter which unit is higher. Indoor units a b Outdoor unit 49 ft. 49 ft. c 33 ft. d Refrigerant pipe diameter is different according to indoor unit to be connected. When using extension pipes, refer to the tables below. When diameter of refrigerant pipe is different from that of outdoor unit union, use optional Different-diameter pipe. For further information on Different-diameter pipe, see 15-1. Unit : inch Indoor unit class 09 12 15 17 24 Outdoor unit union diameter Extension pipe diameter Liquid 1/4 For Liquid 1/4 Gas 3/8 Liquid 1/4 Gas 1/2 Gas 3/8 Liquid 1/4 Liquid 1/4 Gas 3/8 Gas 1/2 Liquid 1/4 Liquid 1/4 Gas 3/8 Gas 1/2 Liquid 1/4 Gas 3/8 Liquid 1/4 Gas 5/8 Indoor unit A Indoor unit B Indoor unit C Indoor unit D 37 8 DATA Model MXZ-2A20NA MXZ-2A20NA - Item Cooling Heating Btu / h 20,000 22,000 SHF — – – Input kW 2.15 1 MXZ-2A20NA - 2 208/230, 1, 60 Power supply (V, phase, Hz) kW 2.113 1.743 Comp. current (208/230V) A 10.08/9.11 8.24/7.45 Fan motor current (208/230V) A 0.43/0.39 0.43/0.39 Condensing pressure PSIG 435 363 Suction pressure PSIG 128 101 °F 190 169 °F 122 106 Input Discharge temperature Refrigerant Condensing temperature circuit Suction temperature °F 65 40 Comp. shell bottom temp. Ref. pipe length [Total pipe length for multi-system] °F 146 144 ft. 25 [50] Refrigerant charge (R410A) — 5 lb.15 oz. DB °F 95 47 WB °F — 43 Fan speed rpm 650 700 Airflow CFM 1,485 1,640 Intake air temperature Outdoor unit 1.78 MXZ-2A20NA MXZ-2A20NA - Outdoor unit Electrical circuit MXZ-2A20NA - Unit Capacity Total 1 38 2 Model MXZ-3A30NA MXZ-3A30NA - Item Unit Cooling Heating Btu / h 28,400 28,600 SHF — – – Input kW 3.25 Capacity Total 1 208/230, 1, 60 Power supply (V, phase, Hz) kW 3.197 2.127 Comp. current (208/230V) A 15.45/13.97 10.15/9.18 Fan motor current (208/230V) A 0.43/0.39 0.43/0.39 Condensing pressure PSIG 506 330 Suction pressure PSIG 136 96 °F 190 150 °F 132 100 Input Discharge temperature Refrigerant Condensing temperature circuit Suction temperature °F 48 30 Comp. shell bottom temp. Ref. pipe length [Total pipe length for multi-system] °F 146 125 ft. 25 [75] Refrigerant charge (R410A) — 7 lb.11 oz. DB °F 95 47 WB °F — 43 Fan speed rpm 520 600 Airflow CFM 1,365 1,605 Intake air temperature Outdoor unit 2.18 MXZ-3A30NA MXZ-3A30NA - Outdoor unit Electrical circuit 1 39 Model MXZ-4A36NA Item Unit Cooling Heating Btu / h 36,000 36,000 SHF — – – Input kW 3.82 3.1 Capacity Total MXZ-4A36NA Outdoor unit Electrical circuit 208/230, 1, 60 Power supply (V, phase, Hz) kW 3.756 Comp. current (208/230V) A 17.85 / 16.14 14.36 /12.98 Fan motor current (208/230V) A 0.43 / 0.39 0.43 / 0.39 Condensing pressure PSIG 458 338 Suction pressure PSIG 136 93 °F 194 158 °F 125 100 °F 62 44 Comp. shell bottom temp. Ref. pipe length [Total pipe length for multi-system] °F 180 ft. 25 [100] Refrigerant charge (R410A) — 8 lb.13 oz. Input Discharge temperature Refrigerant Condensing temperature circuit Suction temperature 140 DB °F 95 47 WB °F — 43 Fan speed rpm 750 750 Airflow CFM 2,068 2,068 Intake air temperature Outdoor unit 3.036 40 8-1. OPERATING RANGE (1) POWER SUPPLY MXZ-2A20NA MXZ-2A20NA MXZ-2A20NA MXZ-3A30NA MXZ-3A30NA MXZ-4A36NA Outdoor unit Guaranteed Voltage Rating Model 1 2 Min. 198 V 208 V 230 V Max. 253 V 208/230 V 60 Hz 1 1 (2) OPERATION Function Cooling Heating Intake air temperature Condition "A" Cooling steady state at rated compressor speed "B-2" Cooling steady state at rated compressor speed "B-1" Cooling steady state at minimum compressor speed Low ambient cooling steady state at minimum compressor speed Intermediate cooling steady state at intermediate compressor speed Standard rating-heating at rated compressor speed Low temperature heating at rated compressor speed Max. temperature heating at minimum compressor speed High temperature heating at minimum compressor speed Frost accumulation at rated compressor speed Frost accumulation at intermediate compressor speed Outdoor Indoor DB (°F) WB (°F) DB (°F) WB (°F) 80 67 95 (75) 80 67 82 (65) 80 67 82 (65) 80 67 67 (53.5) 80 67 87 (69) 70 60 47 43 70 60 17 15 70 60 62 56.5 70 60 47 43 70 60 35 33 70 60 35 33 At intermediate compressor speed =("Cooling rated compressor speed" - "minimum compressor speed") / 3 + "minimum compressor speed". 41 MXZ-2A20NA MXZ-2A20NA - 1 MXZ-2A20NA - 2 MXZ-3A30NA MXZ-3A30NA - 1 MXZ-4A36NA The standard specifications apply only to the operation of the air conditioner under normal conditions. Since operating conditions vary according to the areas where these units are installed, the following information has been provided to clarify the operating characteristics of the air conditioner under the conditions indicated by the performance curve. (1) GUARANTEED VOLTAGE 198 ~ 253 V 60 Hz (2) AIR FLOW Air flow should be set at MAX. (3) MAIN READINGS (1) Indoor intake air wet-bulb temperature : (2) Indoor outlet air wet-bulb temperature : (3) Outdoor intake air dry-bulb temperature : (4) Total input: °FWB °FWB °FDB W } Cooling } (5) Indoor intake air dry-bulb temperature : °FDB Heating (6) Outdoor intake air wet-bulb temperature : °FWB (7) Total input : W Indoor air wet/dry-bulb temperature difference on the left side of the following chart shows the difference between the indoor intake air wet/dry-bulb temperature and the indoor outlet air wet/dry-bulb temperature for your reference at service. How to measure the indoor air wet-bulb/dry-bulb temperature difference 1. 2. 3. 4. 5. 6. 7. 8. Attach at least 2 sets of wet-and dry-bulb thermometers to the indoor air intake as shown in the figure, and at least 2 sets of wet-and dry-bulb thermometers to the indoor air outlet. The thermometers must be attached to the position where air speed is high. Attach at least 2 sets of wet-and dry-bulb thermometers to the outdoor air intake. Cover the thermometers to prevent direct rays of the sun. Check that the air filter is cleaned. Open windows and doors of room. Press the EMERGENCY OPERATION switch once (twice) to start the EMERGENCY COOL (HEAT) MODE. Compressor starts running at 33 Hz (COOL) or 45 Hz (HEAT). The frequency at each operation mode is fixed. When system stabilizes after more than 15 minutes, measure temperature and take an average temperature. 10 minutes later, measure temperature again and check that the temperature does not change. INDOOR UNIT OUTDOOR UNIT Wet-and dry-bulb thermometers 42 Wet-and dry-bulb thermometers 14.0 16.7 20.0 13.0 15.3 18.4 11.9 14.0 16.6 10.6 13.0 14.9 79 43.4 53.1 36.5 39.8 48.6 33.3 36.0 44.3 29.9 32.4 39.8 26.6 28.8 35.5 23.2 25.2 31.0 20.0 21.6 26.5 15 class (75Hz) 40.0 68 64 80 85 90 95 100 105 110 80 ir ea y-b Dr ul ure rat pe em t b 85 ta r in 90 95 59 68 79 ) (°F Indo k 100 105 110 ture pera tem bulb y r air D take 14 23 32 41 50 59 14 Outdoor intake air Wet-bulb temperature (°F) or in 23 32 41 50 1 MXZ-4A36NA 22.0 19.6 13.0 15.3 18.4 20.2 18.0 11.9 14.0 16.6 18.2 16.4 10.6 13.0 14.9 16.4 14.8 9.5 11.3 13.5 14.8 13.1 72 8.6 10.1 11.9 13.0 11.7 68 79 39.8 48.6 54.4 42.1 33.3 36.0 44.3 49.3 38.2 29.9 32.4 39.8 44.5 34.4 26.6 28.8 35.5 39.4 30.6 23.2 25.2 31.0 34.6 26.8 20.0 21.6 26.5 29.7 22.9 24 class (72Hz) 15 class (56Hz) 85 90 95 100 105 45.9 36.5 72 68 64 64 80 110 49.7 17 class (60Hz) 59.2 75 75 24 class (56Hz) 12 class (27Hz) 64.3 12 class (42Hz) 43.4 53.1 17 class (40Hz) 09 class (20Hz) 15 class (36Hz) 79 40.0 59 NOTE: The above broken lines are for the heating operation without any frost and defrost operation. 16.7 20.0 47.0 57.4 79 68 59 Outdoor intake air Wet-bulb temperature (°F) 14.0 43.2 (°F) oo Ind 09 class (34Hz) Indoor air WB temperature difference (degree) Indoor unit class (Inverter output frequency) Indoor air DB temperature difference (degree) 72 68 64 72 MXZ-3A30NA MXZ-3A30NA - Indoor unit class (Inverter output frequency) 75 75 47.0 57.4 12 class (56Hz) 43.2 2 79 15 class (77Hz) 10.1 11.9 12 class (50Hz) 11.3 13.5 8.6 09 class (36Hz) 9.5 09 class (45Hz) Indoor unit class (Inverter output frequency) Indoor air DB temperature difference (degree) Indoor unit class (Inverter output frequency) Indoor air WB temperature difference (degree) 8-2. CAPACITY AND THE INPUT CURVES MXZ-2A20NA MXZ-2A20NA - 1 MXZ-2A20NA - e tur ra pe Ind 14 oo r in 23 tak ir ea Dr 32 y-b ul ) (°F 80 85 90 100 105 59 68 79 110 ure erat (°F) mp lb te em bt take or in Indo 41 95 50 Outdoor intake air Wet-bulb temperature (°F) 59 14 23 u ry-b air D 32 41 50 79 68 59 59 Outdoor intake air Wet-bulb temperature (°F) NOTE: The above broken lines are for the heating operation without any frost and defrost operation. 43 8-3. Capacity and input correction by means of inverter output frequency (OUTDOOR UNIT : MXZ-2A20NA MXZ-2A20NA - MXZ-2A20NA - 1 2 ) 1. 09-class unit in single operation <COOL>Capacity 2.0 <COOL>Total input 2.0 <HEAT>Capacity 2.0 1.5 1.5 1.5 1.5 1.0 1.0 1.0 1.0 0.5 0.5 0.5 0.5 0 50 0 100 Hz Frequency 50 Frequency 100 Hz 0 50 <HEAT>Total input 2.0 100 Hz 0 Frequency 50 Frequency 100 Hz 2. 12-class unit in single operation <COOL>Capacity 2.0 <COOL>Total input 2.0 <HEAT>Capacity 2.0 1.5 1.5 1.5 1.5 1.0 1.0 1.0 1.0 0.5 0.5 0.5 0.5 0 50 100 Hz 0 Frequency 50 Frequency 100 Hz 0 50 <HEAT>Total input 2.0 0 100 Hz Frequency 50 Frequency 100 Hz 3. 15-class unit in single operation <COOL>Capacity 2.0 <COOL>Total input 2.0 <HEAT>Capacity 2.0 1.5 1.5 1.5 1.5 1.0 1.0 1.0 1.0 0.5 0.5 0.5 0.5 0 50 Frequency 100 Hz 0 50 Frequency 100 Hz 44 0 50 Frequency <HEAT>Total input 2.0 100 Hz 0 50 Frequency 100 Hz (OUTDOOR UNIT: MXZ-3A30NA MXZ-3A30NA - 1 MXZ-4A36NA ) 1. 09-class unit in single operation <COOL>Capacity 2.0 <COOL>Total input 2.0 <HEAT>Capacity 2.0 1.5 1.5 1.5 1.5 1.0 1.0 1.0 1.0 0.5 0.5 0.5 0.5 0 50 0 100 Hz Frequency 50 Frequency 100 Hz 0 50 <HEAT>Total input 2.0 100 Hz 0 Frequency 50 Frequency 100 Hz 2. 12-class unit in single operation <COOL>Capacity 2.0 <COOL>Total input 2.0 <HEAT>Capacity 2.0 1.5 1.5 1.5 1.5 1.0 1.0 1.0 1.0 0.5 0.5 0.5 0.5 0 50 100 Hz 0 Frequency 50 Frequency 100 Hz 0 50 <HEAT>Total input 2.0 0 100 Hz Frequency 50 Frequency 100 Hz 3. 15-class unit in single operation <COOL>Capacity 2.0 <COOL>Total input 2.0 <HEAT>Capacity 2.0 1.5 1.5 1.5 1.5 1.0 1.0 1.0 1.0 0.5 0.5 0.5 0.5 0 50 0 100 Hz Frequency 50 Frequency 100 Hz 0 50 <HEAT>Total input 2.0 100 Hz 0 Frequency 50 Frequency 100 Hz 4. 17-class unit in single operation <COOL>Capacity 2.0 <COOL>Total input 2.0 <HEAT>Capacity 2.0 1.5 1.5 1.5 1.5 1.0 1.0 1.0 1.0 0.5 0.5 0.5 0.5 0 50 0 100 Hz Frequency 50 Frequency 100 Hz 0 50 <HEAT>Total input 2.0 100 Hz 0 Frequency 50 Frequency 100 Hz 5. 24-class unit in single operation <COOL>Capacity 2.0 <COOL>Total input 2.0 <HEAT>Capacity 2.0 1.5 1.5 1.5 1.5 1.0 1.0 1.0 1.0 0.5 0.5 0.5 0.5 0 50 Frequency 100 Hz 0 50 Frequency 100 Hz 0 50 Frequency 45 <HEAT>Total input 2.0 100 Hz 0 50 Frequency 100 Hz 8-4. Outdoor low pressure and outdoor unit current 1. 09-class unit in single operation (OUTDOOR UNIT : MXZ-2A20NA MXZ-2A20NA (1) COOL operation Data is based on the condition of indoor humidity 50% Air flow speed : High Inverter output frequency : 33 Hz 2 ) 6.0 re (°F) mperatu DB te Indoor 86 80 150 140 75 130 Outdoor unit current (A) Outdoor low pressure MXZ-2A20NA - <How to work fixed-frequency operation> 1.Set emergency switch to COOL or HEAT. The switch is located on indoor unit. 2.Press emergency run ON/OFF button. 3.Compressor starts running at 33 Hz (COOL) or 45 Hz (HEAT). 4.Indoor fan runs at High speed and continues for 30 minutes. 5.To cancel this operation, press emergency run ON/OFF button or any button on remote controller. (PSIG) 170 160 1 70 5.0 F) re (° 4.0 3.0 m B te or D Indo tu pera 86 80 75 70 33 Hz 2.0 1.0 33 Hz 120 65 70 75 80 85 90 95 100 105 110 115 (°F) 0.0 65 70 75 80 85 90 95 100 105 110 115 (°F) Ambient temperature (°F) Ambient temperature (°F) (2) HEAT operation Data is based on the condition of indoor humidity 75% Set air flow to High speed. Inverter output frequency is 45 Hz. Outdoor unit current (A) 7.0 6.0 5.0 4.0 or Indo re eratu emp t B D (°F) 75 70 65 3.0 45 Hz 2.0 15 20 25 30 35 40 45 50 55 60 65 70 75 (°F) Ambient temperature (°F) 46 2. 12-class unit in single operation (OUTDOOR UNIT : MXZ-2A20NA MXZ-2A20NA (1) COOL operation Data is based on the condition of indoor humidity 50% Air flow speed : High Inverter output frequency : 33 Hz 160 r Indoo MXZ-2A20NA - 2 ) <How to work fixed-frequency operation> 1.Set emergency switch to COOL or HEAT. The switch is located on indoor unit. 2.Press emergency run ON/OFF button. 3.Compressor starts running at 33 Hz (COOL) or 45 Hz (HEAT). 4.Indoor fan runs at High speed and continues for 30 minutes. 5.To cancel this operation, press emergency run ON/OFF button or any button on remote controller. 6.0 (˚F) rature e p m DB te 86 80 150 75 140 5.0 Outdoor unit current (A) Outdoor low pressure (PSIG) 170 1 70 130 4.0 B or D Indo F re (˚ ratu e p tem ) 86 80 75 70 3.0 33 Hz 2.0 1.0 33 Hz 120 0.0 65 70 75 80 85 90 95 100 105 110 115 (˚F) 65 70 75 80 85 90 95 100 105 110 115 (˚F) Ambient temperature (˚F) Ambient temperature (˚F) (2) HEAT operation Data is based on the condition of outdoor humidity 75%. Set air flow to High speed. Inverter output frequency is 45 Hz. Outdoor unit current (A) 7.0 6.0 5.0 F) re (˚ 4.0 Indo B or D tu pera tem 75 70 65 3.0 45 Hz 2.0 15 20 25 30 35 40 45 50 55 60 65 70 75 (˚F) Ambient temperature (˚F) 47 3. 15-class unit in single operation (OUTDOOR UNIT : MXZ-2A20NA MXZ-2A20NA (1) COOL operation Data is based on the condition of indoor humidity 50% Air flow speed : High Inverter output frequency : 33 Hz 160 F ure (˚ perat m e t r DB Indoo MXZ-2A20NA - 2 ) <How to work fixed-frequency operation> 1.Set emergency switch to COOL or HEAT. The switch is located on indoor unit. 2.Press emergency run ON/OFF button. 3.Compressor starts running at 33 Hz (COOL) or 45 Hz (HEAT). 4.Indoor fan runs at High speed and continues for 30 minutes. 5.To cancel this operation, press emergency run ON/OFF button or any button on remote controller. 6.0 ) 86 5.0 80 150 75 140 Outdoor unit current (A) Outdoor low pressure (PSIG) 170 1 3.0 86 80 75 70 F) re (˚ 4.0 B te or D Indo ratu mpe 33 Hz 2.0 70 130 1.0 33 Hz 120 0.0 65 70 75 80 85 90 95 100 105 110 115 (˚F) 65 70 75 80 85 90 95 100 105 110 115 (˚F) Ambient temperature (˚F) Ambient temperature (˚F) (2) HEAT operation Data is based on the condition of outdoor humidity 75% Set air flow to High speed. Inverter output frequency is 45 Hz. Outdoor unit current (A) 7.0 6.0 5.0 4.0 3.0 ( ˚F ture a r e mp B te or D o d In ) 75 70 65 45 Hz 2.0 15 20 25 30 35 40 45 50 55 60 65 70 75 (˚F) Ambient temperature (˚F) 48 4. 09-class unit in single operation (OUTDOOR UNIT : MXZ-3A30NA MXZ-3A30NA - 1 MXZ-4A36NA ) (1) COOL operation Data is based on the condition of indoor humidity 50% Air flow speed : High Inverter output frequency : 33 Hz Outdoor low pressure 150 F re (˚ eratu p m B te or D Indo 80 140 75 130 70 120 6.0 86 ) Outdoor unit current (A) (PSIG) 160 <How to work fixed-frequency operation> 1.Set emergency switch to COOL or HEAT. The switch is located on indoor unit. 2.Press emergency run ON/OFF button. 3.Compressor starts running at 33 Hz (COOL) or 45 Hz (HEAT). 4.Indoor fan runs at High speed and continues for 30 minutes. 5.To cancel this operation, press emergency run ON/OFF button or any button on remote controller. 33 Hz 5.0 4.0 re (˚F eratu p m B te or D Indo ) 86 80 75 70 33 Hz 3.0 2.0 1.0 110 65 70 75 80 85 90 95 100 105 110 115 (˚F) 0.0 65 70 75 80 85 90 95 100 105 110 115 (˚F) Ambient temperature (˚F) Ambient temperature (˚F) (2) HEAT operation Data is based on the condition of outdoor humidity 75%. Set air flow to High speed. Inverter output frequency is 45 Hz. Outdoor unit current (A) 7.0 6.0 5.0 4.0 B rD oo d In e( tur a r pe tem ˚F) 75 70 65 45 Hz 3.0 2.0 15 20 25 30 35 40 45 50 55 60 65 70 75 (˚F) Ambient temperature (˚F) 49 5. 12-class unit in single operation (OUTDOOR UNIT : MXZ-3A30NA MXZ-3A30NA (1) COOL operation Data is based on the condition of indoor humidity 50% Air flow speed : High Inverter output frequency : 33 Hz 150 r Indoo 86 ( ˚F ) rature e p m DB te 75 130 120 6.0 5.0 80 140 MXZ-4A36NA ) <How to work fixed-frequency operation> 1.Set emergency switch to COOL or HEAT. The switch is located on indoor unit. 2.Press emergency run ON/OFF button. 3.Compressor starts running at 33 Hz (COOL) or 45 Hz (HEAT). 4.Indoor fan runs at High speed and continues for 30 minutes. 5.To cancel this operation, press emergency run ON/OFF button or any button on remote controller. 70 Outdoor unit current (A) Outdoor low pressure (PSIG) 160 1 33 Hz 4.0 F re (˚ ratu e p m B te or D o d In ) 86 80 75 70 3.0 33 Hz 2.0 1.0 110 0.0 65 70 75 80 85 90 95 100 105 110 115 (˚F) 65 70 75 80 85 90 95 100 105 110 115 (˚F) Ambient temperature (˚F) Ambient temperature (˚F) (2) HEAT operation Data is based on the condition of outdoor humidity 75%. Set air flow to High speed. Inverter output frequency is 45 Hz. Outdoor unit current (A) 7.0 6.0 5.0 r doo DB ( re atu r e mp 75 70 65 ˚F) te In 4.0 45 Hz 3.0 2.0 15 20 25 30 35 40 45 50 55 60 65 70 75 (˚F) Ambient temperature (˚F) 50 6. 15-class unit in single operation (OUTDOOR UNIT : MXZ-3A30NA MXZ-3A30NA (1) COOL operation Data is based on the condition of indoor humidity 50% Air flow speed : High Inverter output frequency : 33 Hz 6.0 re (˚F eratu p m e t r DB Indoo ) 86 5.0 Outdoor unit current (A) Outdoor low pressure MXZ-4A36NA ) <How to work fixed-frequency operation> 1.Set emergency switch to COOL or HEAT. The switch is located on indoor unit. 2.Press emergency run ON/OFF button. 3.Compressor starts running at 33 Hz (COOL) or 45 Hz (HEAT). 4.Indoor fan runs at High speed and continues for 30 minutes. 5.To cancel this operation, press emergency run ON/OFF button or any button on remote controller. (PSIG) 170 160 1 4.0 150 80 (˚F ure erat p m B te or D Indo 33 Hz 3.0 140 75 86 80 75 70 ) 2.0 130 70 1.0 33 Hz 120 0.0 65 70 75 80 85 90 95 100 105 110 115 (˚F) 65 70 75 80 85 90 95 100 105 110 115 (˚F) Ambient temperature (˚F) Ambient temperature (˚F) (2) HEAT operation Data is based on the condition of outdoor humidity 75% Set air flow to High speed. Inverter output frequency is 45 Hz. Outdoor unit current (A) 7.0 6.0 5.0 DB or o d In ( re atu r e p tem ˚F) 75 70 65 4.0 45 Hz 3.0 2.0 15 20 25 30 35 40 45 50 55 60 65 70 75 (˚F) Ambient temperature (˚F) 51 7. 17-class unit in single operation (OUTDOOR UNIT : MXZ-3A30NA MXZ-3A30NA (1) COOL operation Data is based on the condition of indoor humidity 50% Air flow speed : High Inverter output frequency : 33 Hz 6.0 re (˚F eratu p m e t r DB Indoo ) 86 5.0 Outdoor unit current (A) Outdoor low pressure MXZ-4A36NA ) <How to work fixed-frequency operation> 1.Set emergency switch to COOL or HEAT. The switch is located on indoor unit. 2.Press emergency run ON/OFF button. 3.Compressor starts running at 33 Hz (COOL) or 45 Hz (HEAT). 4.Indoor fan runs at High speed and continues for 30 minutes. 5.To cancel this operation, press emergency run ON/OFF button or any button on remote controller. (PSIG) 170 160 1 4.0 150 80 (˚F ure erat p m B te or D Indo 33 Hz 3.0 140 75 86 80 75 70 ) 2.0 130 70 1.0 33 Hz 120 0.0 65 70 75 80 85 90 95 100 105 110 115 (˚F) 65 70 75 80 85 90 95 100 105 110 115 (˚F) Ambient temperature (˚F) Ambient temperature (˚F) (2) HEAT operation Data is based on the condition of outdoor humidity 75%. Set air flow to High speed. Inverter output frequency is 45 Hz. Outdoor unit current (A) 7.0 6.0 5.0 DB or o d In ( re atu r e p tem ˚F) 75 70 65 4.0 45 Hz 3.0 2.0 15 20 25 30 35 40 45 50 55 60 65 70 75 (˚F) Ambient temperature (˚F) 52 8. 24-class unit in single operation (OUTDOOR UNIT : MXZ-3A30NA MXZ-3A30NA (1) COOL operation Data is based on the condition of indoor humidity 50% Air flow speed : High Inverter output frequency : 33 Hz Outdoor low pressure 170 re (˚F eratu p m e t r DB Indoo ) <How to work fixed-frequency operation> 1.Set emergency switch to COOL or HEAT. The switch is located on indoor unit. 2.Press emergency run ON/OFF button. 3.Compressor starts running at 33 Hz (COOL) or 45 Hz (HEAT). 4.Indoor fan runs at High speed and continues for 30 minutes. 5.To cancel this operation, press emergency run ON/OFF button or any button on remote controller. 7.0 86 6.0 80 160 75 150 140 Outdoor unit current (A) (PSIG) 180 MXZ-4A36NA ) 1 70 5.0 4.0 F) (˚ ture a r e p tem DB r o Indo 86 80 75 70 33 Hz 3.0 2.0 33 Hz 1.0 130 65 70 75 80 85 90 95 100 105 110 115 (˚F) 65 70 75 80 85 90 95 100 105 110 115 (˚F) Ambient temperature (˚F) Ambient temperature (˚F) (2) HEAT operation Data is based on the condition of outdoor humidity 75% Set air flow to High speed. Inverter output frequency is 45 Hz. Outdoor unit current (A) 7.0 6.0 5.0 4.0 3.0 ture (˚F) t r DB o Indo era emp 75 70 65 45 Hz 2.0 15 20 25 30 35 40 45 50 55 60 65 70 75 (˚F) Ambient temperature (˚F) 53 9 ACTUATOR CONTROL MXZ-2A20NA MXZ-2A20NA MXZ-3A30NA MXZ-3A30NA - MXZ-2A20NA MXZ-4A36NA 1 1 2 Relation between main sensor and actuator Sensor Purpose Discharge temperature thermistor Protection 4-way valve Defrosting Protection Indoor coil thermistor Defrosting Defrost thermistor Gas pipe temperature thermistor (MXZ-2A20NA, MXZ-3A30NA) Control Protection Fin temperature thermistor Control Ambient temperature thermistor Protection Outdoor heat exchanger temperature Control Capacity code 10 Compressor Actuator Outdoor LEV fan motor SERVICE FUNCTIONS 10-1. Pre-heat control <MXZ-2A20NA - 1 , MXZ-2A20NA - 2 , MXZ-3A30NA - 1 , MXZ-4A36NA > If moisture gets into the refrigerant cycle, or when refrigerant is liquefied and collected in the compressor, it may interfere the start-up of the compressor. To improve start-up condition, the compressor is energized even while it is not operating. This is to generate heat at the winding. The compressor uses about 50 W when pre-heat control is turned ON. Pre-heat control is ON at initial setting. [How to deactivate pre-heat control] Turn OFF the power supply for the air conditioner before making the setting. Set the 4th Dip Switch of SW1 on the outdoor electronic control P.C. board to ON to deactivate pre-heat control function (MXZ-2A20NA - 1 , MXZ-2A20NA - 2 ). Set the 4th Dip Switch of SW2 on the outdoor electronic control P.C. board to ON to deactivate pre-heat control function (MXZ-3A30NA - 1 , MXZ-4A36NA). SW1 SW2 ON ON 1 2 3 4 5 6 1 2 3 4 SW1 SW2 SW871 SW1 ON MXZ-2A20NA MXZ-2A20NA - SW2 1 2 ON 1 2 3 4 5 6 1 2 3 4 Turn ON the power supply for the air conditioner. NOTE: Pre-heat control will be turned OFF when the breaker is turned OFF. 54 MXZ-3A30NA MXZ-4A36NA 1 10-2. Auto line correcting <MXZ-3A30NA - 1 , MXZ-4A36NA > Outdoor unit has an auto line correcting function which automatically detects and corrects improper wiring or piping. Improper wiring or piping can be automatically detected by pressing the piping/wiring correction switch (SW871). When improper wiring or piping is detected, wiring lines are corrected. This will be completed in about 10 to 15 minutes. [How to activate this function] 1. Check that outside temperature is above 0˚C. (This function does not work when outside temperature is not above 0˚C.) SW871 2. Check that the stop valves of the liquid pipe and gas pipe are open. 3. Check that the wiring between indoor and outdoor unit is correct. (If the wiring is not correct, this function does not work.) 4. Turn ON the power supply and wait at least 1 minute. 5. Press the piping/wiring correction switch (SW871) on the electronic control P.C. board. Do not touch energized parts. SW871 LED indication during detection: LED1 (Red) LED2 (Yellow) LED3 (Green) Lighting Lighting Blinking LED indication after detection: Indication LED1 (Red) LED2 (Yellow) LED3 (Green) Lighting Goes out Lighting Completed (Detected successfully) Blinking Blinking Blinking Cannot be corrected Refer to "SAFETY PRECAUTIONS WHEN LED FLASHES" Other indications located behind the service panel. Be sure to check for closed valves, cracked pipes or clogged pipes. 6. Press the switch to cancel. LED indication after cancel : LED1 (Red) LED2 (Yellow) LED3 (Green) Lighting Lighting Goes out NOTE : Indoor unit cannot be operated while this function is activated. When this function is activated while indoor unit is operating, the operation will be stopped. Operate indoor unit after the auto line correcting is finished. Pressing the switch during detection cancels this function. The record of auto line correcting can be confirmed in the following way: Press the switch for more than 5 seconds. LED will show the record of auto correcting for about 30 seconds as shown in the table below: LED1 (Red) Once 3 times Number of blinks Wiring line LED2 (Yellow) LED3 (Green) Once Lighting Not corrected 3 times Corrected Lighting NOTE : Activate this function to confirm the correct wiring after replacing the electronic control P.C. board. (Previous records are deleted when the electronic control P.C. board is replaced.) The record cannot be shown if auto line correcting is not canceled (Refer to "How to activate this function"). 55 11 TROUBLESHOOTING MXZ-2A20NA MXZ-2A20NA MXZ-3A30NA MXZ-3A30NA - 1 1 MXZ-2A20NA MXZ-4A36NA 2 11-1. Cautions on troubleshooting 1. Before troubleshooting, check the following: 1) Check the power supply voltage. 2) Check the indoor/outdoor connecting wire for mis-wiring. 2. Take care of the following during servicing. 1) Before servicing the air conditioner, be sure to turn off the unit first with the remote controller, and then after confirming the horizontal vane is closed, turn off the breaker and/or disconnect the power plug. 2) Be sure to turn OFF the power supply before removing the front panel, the cabinet, the top panel, and the electronic control P.C. board. 3) When removing the electrical parts, be careful to the residual voltage of smoothing capacitor. 4) When removing the electronic control P.C. board, hold the edge of the board with care NOT to apply stress on the components. 5) When connecting or disconnecting the connectors, hold the housing of the connector. DO NOT pull the lead wires. Housing point Lead wiring 3. Troubleshooting procedure 1) First, check if the OPERATION INDICATOR lamp on the indoor unit is flashing on and off to indicate an abnormality. To make sure, check how many times the abnormality indication is flashing on and off before starting service work. 2) If the electronic control P.C. board seems to be defective, check the copper foil pattern for disconnection and the components for bursting and discoloration. 3) When troubleshooting, refer to 11-2. and 11-3. and 11-4. 11-2. Failure mode recall function This air conditioner can memorize the abnormal condition which has occurred once. Even though LED indication listed on the troubleshooting check table (11-4.) disappears, the memorized failure details can be recalled. This mode is very useful when the unit needs to be repaired for the abnormality which doesn’t recur. 1. Type of failure mode recall function There are 2 types in failure mode recall function as shown below. Indoor and outdoor unit failure mode recall function With this function, failure mode of indoor unit and a part of failure mode of outdoor unit can be recalled. The details of outdoor unit failure mode recall function With this function, more detailed failure mode of outdoor unit can be recalled. Refer to the service manual of indoor unit for how to recall the failure mode and the details of indoor unit failure mode. The outdoor unit failure mode is indicated by the operation indicator lamp on the indoor unit and the LED of outdoor unit. See "11-2.2. Outdoor unit failure mode table". 56 2. Outdoor unit failure mode table The left lamp of OPERATION INDICATOR lamp (Indoor unit) Abnormal point (Failure mode / protection) LED indication Condition (Outdoor P.C. board) LED 1 LED 2 Lighting Lighting When overcurrent protection stop is continuously performed three times within 1 minute after the compressor gets started, or when converter protection stop or bus-bar voltage protection stop is continuously performed three times within 3 minutes after start-up. OFF 2-time flash None (Normal) Outdoor power system 3-time flash Discharge temperature thermistor Lighting Once Defrost thermistor Ambient temperature thermistor Fin temperature thermistor P.C. board temperature thermistor Lighting Lighting Lighting Lighting Outdoor heat exchanger temperature thermistor Lighting 9 times Gas pipe temperature thermistor A Lighting 10 times When a short or open circuit is detected in the thermistor during cooling. Lighting 11 times (A,B: MXZ-2A20NA, MXZ-3A30NA) (C : MXZ-3A30NA) Gas pipe temperature thermistor B Gas pipe temperature thermistor C When thermistor shorts or opens during compressor running. Once Twice 3 times 4 times Correspondence • Check the connection of the compressor connecting wire. • Refer to 11-6. "How to check inverter / compressor". • Check the stop valve. • Refer to 11-6. "Check of outdoor thermistors". • Replace the outdoor electronic control P.C. board. • Refer to 11-6. "Check of outdoor thermistors". Lighting 12 times 4-time flash Overcurrent 5-time flash Discharge temperature Lighting Lighting When discharge temperature exceeds •Check refrigerant circuit 240.8°F during operation. and refrigerant amount. • Refer to 11-6. "Check Compressor can restart if discharge of LEV". temperature thermistor reads 212°F or less 3 minutes later. 6-time flash High pressure Lighting Lighting When high-pressure is detected with the high-pressure switch (HPS) during operation. (MXZ-3A30NA,MXZ-3A30NA- 1 , MXZ-4A36NA) When the outdoor heat exchanger temperature exceeds 158°F during cooling or the indoor gas pipe temperature exceeds 158°F during heating. •Check refrigerant circuit and refrigerant amount. • Check the stop valve. 7-time flash Fin temperature 3 times Goes out When the fin temperature exceeds 188.6°F during operation. P.C. board temperature 4 times Goes out When the P.C. board temperature exceeds 158°F during operation. • Check around outdoor unit. • Check outdoor unit air passage. • Refer to 11-6. "Check of outdoor fan motor". 8-time flash Outdoor fan motor Lighting Lighting When failure occurs continuously three times within 30 seconds after the fan gets started. • Refer to 11-6. "Check of outdoor fan motor". 9-time flash Nonvolatile memory data Lighting 5 times When nonvolatile memory data cannot be read properly. 10-time flash Discharge temperature Lighting Lighting When the frequency of the compressor is kept 80Hz or more and the discharge temperature is kept under 102.2°F for more than 20 minutes. • Replace the outdoor electronic control P.C. board. •Check refrigerant circuit and refrigerant amount. • Refer to 11-6. "Check of LEV". Once Goes out When 28A current flows into intelligent power module. • Reconnect compressor connector. • Refer to 11-6. "How to check inverter/ compressor". • Check the stop valve. NOTE : Blinking patterns of this mode differ from the ones of Troubleshooting check table (11-4.). 57 Indoor/outdoor unit failure mode recall function The left lamp of OPERATION INDICATOR lamp(Indoor unit) 11-time flash 15-time flash LED indication (Outdoor P.C. board) LED 1 LED 2 Abnormal point (Failure mode / protection) Correspondence Condition Communication error between P.C. boards Lighting 6 times Communication error occurs between the electronic control P.C. board and power board for more than 10 seconds. When the communication between boards protection stop is continuously performed twice. Current sensor Lighting 7 times • Replace the power board. Zero cross detecting circuit 5 times Goes out When a short or open circuit is detected in the current sensor during compressor operating. Current sensor protection stop is continuously performed twice. When zero cross signal cannot be detected while the compressor is operating. The protection stop of the zero cross detecting circuit is continuously performed 10 times. Converter 5 times Goes out When a failure is detected in the operation of the converter during operation. • Replace the power board. Bus-bar voltage (1) 5 times Goes out When the bus-bar voltage exceeds 400V or falls to 200V or below during compressor operating. Bus-bar voltage (2) Even if this protection stop is performed continuously three times, it does not mean the abnormality in outdoor power system. 6 times Goes out When the bus-bar voltage exceeds 400V or falls to 50V or below during compressor operating. LEV for drain Lighting Lighting When the indoor unit detects any abnormal in the LEV for drain. Indoor/outdoor unit failure mode recall function • Check the connecting wire between outdoor electronic control P.C. board and power board. • Check the connecting wire among electronic control P.C. board, noise filter P.C. board and power board. • Refer to 11-6. "Check of LEV". • Check the drain pump of the indoor unit. NOTE : Blinking patterns of this mode differ from the ones of Troubleshooting check table (11-4.). 11-3. Instruction of troubleshooting • Check the indoor unit with referring to the indoor unit service manual, and confirm that there is any problem in the indoor unit. Then, check the outdoor unit with referring to this page. Operation start Check the outdoor unit LED indicator. LED 1 or LED 2 has blinked. Both LED 1 and Both LED1 and LED 2 are lighting. LED2 are OFF. Refer to 11-4. "Troubleshooting check table". Refer to 11-6. "Check of power supply". • Indoor unit serial signal error Refer to 11-6. "How to check mis-wiring and serial signal error". • COOL or HEAT operation only Refer to 11-6. "Check of R.V. coil". • When cooling, heat exchanger of non-operating indoor unit frosts. •When heating, nonoperating indoor unit gets warm. Refer to 11-6. "Check of LEV". • When cooling dew drops in the non-operating indoor unit. Check of miss-piping. 58 • When heating, room does not get warm. Refer to 11-6. "How to check inverter/ compressor". Check mis-piping, shortage of capacity. • When cooling, room is not cool. Refer to 11-6. "How to check inverter/ compressor". 11-4. Troubleshooting check table Indication LED1(Red) LED2(Yellow) No. Symptom Outdoor unit does not operate. Condition Abnormal point / Condition Correspondence • Refer to 11-6. "Check of LEV". • Check the drain pump of the indoor unit. Lighting Once LEV for drain When the indoor unit detects any abnormality in the LEV for drain. 2 Lighting Twice Outdoor power system • Check the connection of the compressor connecting When over current protection stop is continuously performed three times wire. within 1 minute after the compressor gets started, or when converter protection stop or bus-bar voltage protection stop is continuously performed • Refer to 11-6. "How to check inverter/compressor". three times within 3 minutes after start-up. • Check the stop valve. 3 Lighting 3 times Discharge temperature thermistor When a short circuit is detected in the thermistor during operation, or when an open circuit is detected in the thermistor after 10 minutes of compressor start-up. 4 Lighting 4 times 1 5 Lighting Fin temperature thermistor P.C board temperature thermistor Ambient temperature thermistor When a short or open circuit is detected in the thermistor during operation. • Refer to 11-6. "Check of outdoor thermistors". • Refer to 11-6. "Check of outdoor thermistors". • Replace the outdoor electronic control P.C. board. When a short or open circuit is detected in the thermistor during operation. Outdoor heat exchanger temperature thermistor When a short circuit is detected in the thermistor during operation, or when an open circuit is detected in the thermistor after 5 minutes (in cooling) and 10 minutes (in heating) of compressor start-up. Defrost thermistor When a short circuit is detected in the thermistor during operation, or when an open circuit is detected in the thermistor after 5 minutes of compressor start-up. Nonvolatile memory data When the nonvolatile memory data cannot be read properly. • Replace the outdoor electronic control P.C. board. 5 times • Refer to 11-6. "Check of outdoor thermistors". 6 Lighting 7 times 7 Lighting 8 times Current sensor Current sensor protection stop is continuously performed twice. • Replace the power board. Gas pipe temperature thermistor A Gas pipe temperature thermistor B Gas pipe temperature thermistor C When a short or open circuit is detected in the thermistor during cooling. (A,B : MXZ-2A20NA, MXZ-3A30NA) (C : MXZ-3A30NA) • Refer to 11-6. Communication error between P.C. boards Zero cross detecting circuit When the communication protection stop between boards is continuously performed twice. The protection stop of the zero cross detecting circuit is continuously performed 10 times. • Check the connecting wire between outdoor electronic control P.C. board and power board. • Check the connecting wire among outdoor electronic control P.C. board, noise filter P.C. board and power board. IPM protection When overcurrent is detected after 30 minutes of compressor start-up. Lock protection When overcurrent is detected within 30 minutes of compressor start-up • Reconnect compressor connector. • Refer to 11-6. "How to check inverter/compressor". • Check the stop valve. • Check the power module (PAM module). 8 Lighting 10 times 9 Lighting 11 times 10 Lighting 12 times 11 12 'Outdoor unit stops and Twice restarts 3 minutes later' is repeated. 3 times 4 times 13 Goes out Goes out Goes out 14 5 times Goes out 15 8 times Goes out Discharge temperature protection Fin temperature protection P.C. board temperature protection High-pressure protection Converter protection Bus-bar voltage protection (1) Bus-bar voltage protection (2) 16 9 times Goes out 17 13 times Goes out Outdoor fan motor 8 times Current sensor protection 18 Lighting 19 Lighting 11 times 20 Lighting 12 times Communication between P.C. boards protection Zero cross detecting circuit protection "Check of outdoor thermistors". When discharge temperature exceeds 240.8°F during operation. Compressor • Check the amount of gas and refrigerant circuit. can restart if discharge temperature thermistor reads 212°F or less 3 • Refer to 11-6. "Check of LEV". minutes later. When the fin temperature exceeds 188.6°F during operation. •Check refrigerant circuit and refrigerant amount. •Refer to 11-6. "Check of outdoor fan motor". When the P.C. board temperature exceeds 158°F during operation. When high-pressure is detected with the high-pressure switch (HPS) during operation. (MXZ-3A30NA , MXZ-3A30NA - 1 , MXZ-4A36NA) When the outdoor heat exchanger temperature exceeds 158°F during cooling or when indoor gas pipe temperature exceeds 158°F during heating. When a failure is detected in the operation of the converter during operation. When the bus-bar voltage exceeds 400V or falls to 200V or below during compressor operating. When the bus-bar voltage exceeds 400V or falls to 50V or below during compressor operating. When failure occurs continuously three times within 30 seconds after the fan gets started. When a short or open circuit is detected in the current sensor during compressor operating. Communication error occurs between the outdoor electronic control P.C. board and power board for more than 10 seconds. When zero cross signal cannot be detected while the compressor is operating. • Check around of gas and the refrigerant circuit. • Check of stop valve. • Replace the power board. • Replace the power board. • Refer to 11-6. "Check of outdoor fan motor". • Replace the power board. • Check the connecting wire between outdoor electronic control P.C. board and power board. • Check the connecting wire among outdoor electronic control P.C. board, noise filter P.C. board and power board. Outdoor electronic control P.C. board (Parts side) MXZ-2A20NA, MXZ-2A20NAMXZ-3A30NA NOTE 1. The location of LED is illustrated at the right figure. Refer to 11-7.1. 2. LED is lighted during normal operation. The flashing frequency shows the number of times the LED blinks after every 2.5-second OFF. (Example) When the flashing frequency is “2”. 0.5-second ON 1 , MXZ-2A20NA- 2 LED2 LED1 Lighting 0.5-second ON MXZ-3A30NA- 1 , MXZ-4A36NA LED1 LED2 Lighting ON OFF 2.5-second OFF 2.5-second OFF 59 No. Symptom Indication LED1(Red) LED2(Yellow) Outdoor unit 21 operates. Once Lighting Twice Lighting 22 Condition Abnormal point / Condition Primary current protection When the input current exceeds 15A. Secondary current protection When the current of the compressor exceeds 15A. Correspondence High-pressure protection When the indoor gas pipe temperature exceeds 113°F during heating. Defrosting in cooling When the indoor gas pipe temperature falls 37.4°F or below during cooling. These symptoms do not mean any abnormality of the product, but check the following points. • Check if indoor filters are clogged. • Check if refrigerant is short. • Check if indoor/outdoor unit air circulation is short cycled. 23 3 times Lighting Discharge temperature protection When the frequency of the compressor is kept 80Hz or more and the discharge temperature is kept under 122°F(COOL mode) /104°F(HEAT mode) for more than 40 minutes. • Check refrigerant circuit and refrigerant amount. • Refer to 11-6. "Check of LEV". • Refer to 11-6. "Check of outdoor thermistors". 24 4 times Lighting Low discharge temperature protection When the frequency of the compressor is kept 80Hz or more and the discharge temperature is kept under 102.2°F for more than 20 minutes. • Refer to 11-6. "Check of LEV". • Check refrigerant circuit and refrigerant amount. When the outdoor heat exchanger temperature exceeds 136.4°F during operation. This symptom does not mean any abnormality of the product, but check the following points. • Check if indoor filters are clogged. • Check if refrigerant is short. • Check if indoor/outdoor unit air circulation is short cycled. When the unit is operated with emergency operation switch. 25 5 times Lighting Cooling high-pressure protection Outdoor unit 26 operates normally. 9 times Lighting Inverter check mode 27 Lighting Lighting Normal - - NOTE 1. The location of LED is illustrated at the right figure. Refer to 11-7.1. 2. LED is lighted during normal operation. The flashing frequency shows the number of times the LED blinks after every 2.5-second OFF. (Example) When the flashing frequency is “2”. - Outdoor electronic control P.C. board(Parts side) MXZ-2A20NA, MXZ-2A20NA- 1 , MXZ-2A20NA- 2 MXZ-3A30NA LED2 LED1 Lighting 0.5-second ON 0.5-second ON MXZ-3A30NA- , MXZ-4A36NA LED1 LED2 ON OFF 1 2.5-second OFF Lighting 2.5-second OFF 60 11-5. Trouble criterion of main parts MXZ-2A20NA MXZ-2A20NA MXZ-3A30NA MXZ-3A30NA - 1 1 MXZ-2A20NA MXZ-4A36NA Part name Defrost thermistor (RT61) 2 Check method and criterion Measure the resistance with a tester. Ambient temperature thermistor (RT65) Outdoor heat exchanger temperature thermistor (RT68) Refer to 11-7. “Test point diagram and voltage”,1. “Outdoor electronic control P. C. board”, the chart of thermistor. Gas pipe temperature thermistor (RT6A~C) MXZ-2A20NA MXZ-3A30NA Discharge temperature thermistor (RT62) Measure the resistance with a tester. Before measurement, hold the thermistor with your hands to warm it up. Fin temperature thermistor (RT64) Refer to 11-7. “Test point diagram and voltage”,1. “Outdoor electronic control P. C. board”, the chart of thermistor. Compressor W V WHT Measure the resistance between terminals using a tester. (Winding temperature: 14°F ~ 104°F) RED Normal (Each phase) U BLK Outdoor fan motor RED WHT BLK MXZ-2A20NA 0.39 Ω ~ 0.49 Ω MXZ-2A20NA- 1 , 2 0.86 Ω ~ 1.06 Ω MXZ-3A30NA MXZ-3A30NA MXZ-4A36NA 1 1.29 Ω ~ 1.49 Ω Measure the resistance between lead wires using a tester. (Part temperature: 14°F ~ 104°F) U (W) V (V) Normal (Each phase) 13.4 Ω ~16.4 Ω W (U) Measure the resistance using a tester. (Part temperature: 14°F ~ 104°F) Normal R.V. coil 1.2 kΩ ~1.56 kΩ Linear expansion valve WHT RED LEV ORN YLW BRN BLU High pressure switch (HPS) MXZ-3A30NA MXZ-3A30NA - 1 MXZ-4A36NA Measure the resistance using a tester. (Part temperature: 14°F ~ 104°F) Normal Color of lead wire WHT - RED RED - ORN YLW - BRN BRN - BLU HPS 37.4 Ω ~ 53.9 Ω Pressure 537 ± 22 PSIG 7 PSIG 696 +- 15 61 Normal Close Open 11-6. Troubleshooting flow MXZ-2A20NA MXZ-2A20NA MXZ-3A30NA MXZ-3A30NA - 1 1 MXZ-2A20NA MXZ-4A36NA 2 Outdoor unit does not operate. Check of power supply Check the connecting of parts of main power supply circuit. Turn ON the power supply. Is there voltage of 208/230 V AC in the power supply terminal block? No Check the power supply cable. Yes Is the output voltage from the noise filter P.C. board 208/230 V AC? No Replace the noise filter P.C. board. Yes Is the input voltage to the power board 208/230 V AC? No Replace the reactor. Yes No Is the input voltage to the outdoor electronic control P.C. board 294/325 V DC? Replace the power board. Yes Replace the outdoor electronic control P.C. board. 62 • When unit cannot operate neither by the remote controller nor by EMERGENCY OPERATION switch. Indoor unit does not operate. • When OPERATION INDICATOR lamp flashes ON and OFF in every 0.5-second. Outdoor unit does not operate. How to check mis-wiring and serial signal error Turn OFF the power supply. Is there rated voltage in the power supply ? No Check the power supply. Yes LED indication for communication status Turn ON the power supply. Communication status is indicated by the LED. Unit status Blinking: normal communication Lighting: abnormal communication or not connected Pattern 1 and 2 is repeatedly displayed alternately. Each pattern is displayed for 15 seconds. NOTE: "Lighting" in the table below does not indicate abnormal communication. MXZ-2A20NA MXZ-2A20NA MXZ-2A20NA MXZ-3A30NA Is there rated voltage between outdoor terminal block S1 and S2 ? No Check the wiring. Yes Press EMERGENCY OPERATION switch once. Does the left lamp of OPERATION INDICATOR lamp light up ? <Confirmation of the power to the indoor unit> No Yes 1 Is serial signal error indicated 6 minutes later ? 2 No Yes Outdoor electronic control P.C. board Is there any mis-wiring, poor contact, or wire disconnection of the indoor/outdoor connecting wire ? (Parts side) Yes Correct them. No LED3 LED2 LED1 A Blinking Pattern LED 3 LED 2 LED 1 1 Lighting Unit B status 2 Goes out Lighting Unit A status Unit C status MXZ-3A30NA MXZ-4A36NA 1 Turn OFF the power supply. Check once more if the indoor/outdoor B connecting wire is not mis-wiring. Short-circuit outdoor terminal block S2 and S3. 1 1 Mis-wiring may damage indoor electronic control P.C. board during the operation. Be sure to confirm the wiring is correct before the operation starts. Turn ON the power supply. Outdoor electronic control P.C. board (Parts side) LED1 LED2 LED3 Does the LED on the outdoor electronic control P.C. board repeat "3.6-second-OFF and 0.8-second-ON quick blinking" ? No (Lighted or not lighted) Blinking Yes Pattern LED 1 LED 2 1 Unit A status Unit D status Unit B status Unit C status Lighting Goes out 2 LED 3 A · Turn OFF inverter-controlled lighting equipment. · Turn OFF the power supply and then turn ON again. · Press EMERGENCY OPERATION switch. Is serial signal error indicated 6 minutes later Yes B · Reinstall either the unit or the light each No other away. · Attach a filter on remote control receiving section of the indoor unit. Turn OFF the power supply. Remove the short-circuit between outdoor terminal block S2 and S3. Turn ON the power supply. Is there amplitude of 10 to 20 V DC between outdoor terminal block S2 and S3 ? <Confirmation of serial signal> No Replace the outdoor electronic control P.C. board. 2 2 Be careful to the residual voltage of smoothing capacitor. Is there any error of the indoor/outdoor connecting wire, such as the damage of the wire, intermediate connection, poor contact to the terminal block ? Yes Replace the indoor/outdoor connecting wire. No Yes Is there rated voltage between indoor terminal block S1 and S2 ? <Confirmation of power voltage> No Is there any error of the indoor/outdoor connecting wire, such as the damage of the wire, intermediate connection, poor contact to the terminal block ? Yes No Replace the indoor electronic control P.C. board. Be sure to release the failure-mode recall function after checking. Refer to indoor unit service manual. 63 Yes Replace the indoor/outdoor connecting wire. The cooling operation or heating operation does not operate. Check of R.V. coil CN912 CN781 Noise filter P.C. board Outdoor electronic control P.C. board • When heating operation does not work. 1. Disconnect the lead wire leading to the compressor. 2. 3 minutes after turning ON the power supply, start EMERGENCY OPERATION in HEAT mode. Is there voltage of 208/230 V AC between pin1 and pin 2 at connector CN912 ? No Yes 1. Turn OFF the power supply of indoor and outdoor unit, and disconnect the connector CN781. 2. 3 minutes after turning ON the power supply, start EMERGENCY OPERATION in HEAT mode. Turn OFF the power supply of indoor and outdoor unit. Disconnect the connector CN912. Is there normal resistance to R.V. coil ? No Replace the R.V. coil. Is there voltage of 12 V DC No between the connector CN781 pin 5 (+) and pin 3 (-) ? Yes Replace the outdoor electronic control P.C. board. Yes Replace the power P.C. board or the noise filter P.C. board. Replace the 4-way valve. • When cooling operation does not work. 1. Disconnect the lead wire leading to the compressor. 2. 3 minutes after turning ON the power supply, start EMERGENCY OPERATION in COOL mode. Is there voltage of 208/230 V AC between pin1 and pin 2 at connector CN912 ? Yes No Replace the 4-way valve. If the connector CN912 is not connected or R.V. coil is open, voltage occurs between terminals even when the control is OFF. 1. Turn OFF the power supply of the indoor and the outdoor unit, and disconnect the connector CN781. 2. 3 minutes after turning ON the power supply, start EMERGENCY OPERATION in COOL mode. Is there voltage of 12 V DC between the connector CN781 pin 5 (+) and pin 3 (-) ? No Replace the noise filter P.C. board. Yes Replace the outdoor electronic control P.C. board. 64 • When cooling, heat exchanger of non-operating indoor unit frosts. • When heating, non-operating indoor unit get warm. Check of LEV Turn ON the power supply to the outdoor unit after checking LEV coil is mounted to the LEV body securely. Yes Is "click - click" sound heard ? Or, do you feel vibration of LEV coil with your hand ? Normal No Disconnect the connectors. CN791: LEV A, CN792: LEV B, CN793: LEV C, CN794 : LEV D, CN795: LEV E, CN796: LEV F Is there normal resistance to LEV coil ? Yes Replace the outdoor electronic control P.C. board. No Replace LEV coil. 65 • When heating, room does not get warm. • When cooling, room does not get cool. How to check inverter/ compressor Disconnect the terminal of the compressor. 3 minutes after turning ON the power supply, start EMERGENCY OPERATION. Measure the voltage between each lead wire leading to the compressor. U (BLK) - V (WHT) V (WHT) - W (RED) W (RED) - U (BLK) Output voltage COOL: 150 V (48 Hz) HEAT: 170 V (64 Hz) Is voltage output ? 1, 2 Yes Is output balanced ? Yes 1 • After the outdoor fan starts running, wait for 1 minute or more before measuring the voltage. • The output voltage values have the tolerance of ± 20%. 2 • The output differs depending on the capacity or the number of indoor units to be operated. No No Is the input voltage to the outdoor electronic control P.C. board 370 V or more ? No Replace the power board. Yes Turn OFF the power supply of indoor and outdoor unit, and measure the compressor winding resistance between the compressor terminals. Is the resistance between each terminal normal ? Yes No Replace the compressor. Reconnect the lead wire of compressor, and turn ON the power supply to indoor and outdoor unit. 3 minutes later, start EMERGENCY OPERATION. Clarify the causes by counting time until the inverter stops. 0 to 10 seconds: compressor layer short 10 to 60 seconds: compressor lock 60 seconds to 5minutes: refrigerant circuit defective 5 minutes or more: normal 66 • When thermistor is abnormal. Check of outdoor thermistors Disconnect the connector in the following table and measure the resistance of the thermistor to check whether the thermistor is normal or not. Abnormal Replace the thermistor except RT64. In case that RT64 is abnormal, replace the outdoor power board since RT64 is combined with the outdoor power board. Normal Reconnect the connector in the following table and disconnect the lead wire leading to the compressor. 3 minutes after turning ON the power supply, start EMERGENCY OPERATION. No Does the unit operate 10 minutes or more without showing thermistor abnormality ? Replace the outdoor electronic control P.C. board or the outdoor power board. Yes Normal Thermistor Defrost Discharge temperature Outdoor heat exchanger temperature Gas pipe temperature (Unit A) Gas pipe temperature (Unit B) Gas pipe temperature (Unit C) Ambient temperature Fin temperature Symbol RT61 RT62 RT68 RT6A RT6B RT6C RT65 RT64 Connector, Pin No. Between CN661 pin1 and pin2 Between CN661 pin3 and pin4 Between CN661 pin7 and pin8 Between CN662 pin1 and pin2 Between CN662 pin3 and pin4 Between CN662 pin5 and pin6 Between CN663 pin1 and pin2 Between CN3 pin1 and pin2 Board Outdoor electronic control P.C. board Outdoor power board Except MXZ-2A20NA - 1 , MXZ-2A20NA - 2 , MXZ-3A30NA - 1 and MXZ-4A36NA. • Fan motor does not operate or stops operating shortly after starting the operation. Check of outdoor fan motor Check the connection between the connectors CN931 and CN932. Is the resistance between each terminal of outdoor fan motor normal ? Yes No Disconnect CN932 from outdoor electronic control P.C. board, and turn ON the power supply. Rotate the outdoor fan motor manually and measure the voltage of CN931. Between (+) and (-) Between (+) and (-) Between (+) and (-) (Fixed to either 5 V or 0 V DC) No No Replace the outdoor DC fan motor. Does the voltage between each terminal become 5 V DC and 0 V DC repeatedly ? Yes Does the outdoor fan motor rotate smoothly ? Yes Replace the outdoor electronic control P.C. board. 67 • When the operation frequency does not go up from lowest frequency. Check of HPS MXZ-3A30NA MXZ-3A30NA - 1 MXZ-4A36NA 1. Disconnect the connector CN681 in the electronic control P.C. board. 2. Check the resistance of HPS after 1 minute has passed since the outdoor unit power supply was turned OFF. Check the resistance between each terminal. Infinity Replace HPS. 0Ω Reconnect CN681. Turn ON the power supply to the indoor and outdoor unit. 3 minutes later, start EMERGENCY OPERATION. Is HPS protection displayed immediately after compressor starts ? Yes Replace the electronic control P.C. board. No Normal The other cases Indoor unit does not operate. (different operating models in multi system) • When you try to run two indoor units simultaneously, one for cooling and the other for heating, the unit which transmits signal to the outdoor units earlier decides the operation mode. • When the above situation occurs, set all the indoor units to the same mode, turn OFF the indoor units, and then turn them back ON. • Though the top of the indoor unit sometimes gets warm, this does not mean malfunction. The reason is that the refrigerant gas continuously flows into the indoor unit even while it is not operating. 68 200 60 70 60 50 30 20 0 80 40 40 20 32 50 68 86 104 122 140 158 176 Temperature (°F) 10 0 LEV E -4 14 32 50 68 86 Temperature (°F) 104 Except MXZ-2A20NA - 1 , 2 . ( ( (–) ( (+) (–) (+) (+) (–) (+) ( ( ( ( CN931 5 V DC pulse wave 5V GND 80 ( ( CN932 20-90 V AC 100 CN795 12 V DC pulse wave Temperature (°F) 120 CN781 86 104 122 140 158 176 194 212 230 248 140 12 V DC 68 Ambient temperature CN663 thermistor (RT65) CN701 Signal transmission (To power board) 5 V DC pulse wave 50 Outdoor heat exchanger temperature thermistor (RT68) 32 To fan motor 0 CN661 Defrost thermistor (RT61) Discharge temperature thermistor (RT62) 100 ( 200 ( 300 ( ( Resistance (kΩ) 600 90 160 Resistance (kΩ) Discharge temperature thermistor (RT62) 400 100 180 700 500 Defrost thermistor (RT61) Ambient temperature thermistor (RT65) Gas pipe temperature thermistor (RT6A,6B,6C) Outdoor heat exchanger temperature thermistor (RT68) Fin temperature thermistor (RT64) 1 GND (power board) Rush current relay (–) (–)R.V. coil 2 MXZ-2A20NA MXZ-3A30NA Resistance (kΩ) MXZ-2A20NA MXZ-2A20NA - CN702 GND Signal reception (From power board) 15 V 5 V DC pulse wave 15 V 11-7. Test point diagram and voltage 1. Outdoor electronic control P.C. board LED 1 LED 2 LED 3 SW1 CN603 Serial signal Room C 12~24 V DC CN801 294 V DC ~ 370 V DC Input CN602 Serial signal Room B 12~24 V DC F801 FUSE T3.15AL250V CN601 208/230 V AC Input Serial signal Room A 69 ( ( ( 12 V DC pulse wave LEV Room A 12 V DC pulse wave LEV Room B CN791 ( ( LEV Room C ( ( ( CN792 ( 12 V DC pulse wave CN793 (–) MXZ-3A30NA (+) CN681 High pressure switch ( (–) Gas pipe B thermistor ( Gas pipe C thermistor ( (+) (–) (+) CN662 Gas pipe A thermistor ( 12~24 V DC Defrost thermistor (RT61) Ambient temperature thermistor (RT65) Fin temperature thermistor (RT64) Outdoor heat exchanger temperature thermistor (RT68) MXZ-4A36NA 1 200 Resistance (kΩ) 700 500 400 300 90 160 140 120 100 80 60 To fan motor 5 V DC pulse wave 5 V DC GND Defrost thermistor (RT61) Discharge temperature thermistor (RT62) Outdoor heat exchanger temperature thermistor (RT68) CN661 Ambient temperature thermistor (RT65) CN663 Signal transmission (To power board) 5 V DC pulse wave CN701 10 20 30 40 50 60 70 80 90 100 110 120 Temperature (°C) ( 50 20 32 50 68 86 104 122 140 158 176 Temperature (°F) 10 0 -4 14 32 50 68 86 Temperature (°F) 104 ( ( (+) CN932 20-90 V AC 60 (–)R.V. coil CN781 0 0 70 30 20 100 80 40 40 200 Signal reception (From power board) 5 V DC pulse wave CN702 15 V DC GND GND (–)Rush current relay Resistance (kΩ) 600 0 100 180 Discharge temperature thermistor (RT62) Resistance (kΩ) MXZ-3A30NA - LED 1 LED 2 LED 3 F931 FUSE T3.15AL250V CN631 Serial signal Room D 12~24 V DC CN621 Serial signal Room C 12~24 V DC SW1 SW2 SW871 CN611 Serial signal Room B 12~24 V DC CN801 294~370 V DC Input CN601 208/230 V AC Input Serial signal Room A 12~24 V DC F801 FUSE T3.15AL250V {( – + CN796 LEV F 12 V DC pulse wave ( CN794 LEV Room D CN793 LEV Room C CN792 LEV Room B CN681 High pressure switch 70 CN791 LEV Room A 2. Noise filter P.C. board MXZ-2A20NA MXZ-2A20NA - CN901 To electronic CN902 To power control board P.C. board MXZ-3A30NA 1 CN903 To power board { { 208/230 V AC Input { { CN912 R.V. coil 208/230 V AC 208/230 V AC Output NR64 VARISTOR MXZ-2A20NA - 2 F64 FUSE T2AL250V CN901 To electronic control P.C. board F911 FUSE T1AL250V CN903 To power board { { CN912 R.V. coil 208/230 V AC 208/230 V AC Output CN902 To power board { 208/230 V AC Output 208/230 V AC Output F65 FUSE T6.3AL250V 208/230 V AC Input F64 FUSE T2AL250V 71 MXZ-3A30NA - 1 MXZ-4A36NA CN912 R.V. coil 208/230 V AC { CN903 To power board { { CN901 To electronic CN902 control To power P.C. board board 208/230 V AC Output 208/230 V AC Output F65 FUSE T6.3AL250V F64 FUSE T2AL250V 208/230 V AC Input 72 3. Outdoor Power board MXZ-2A20NA MXZ-2A20NA MXZ-3A30NA MXZ-3A30NA - 1 1 MXZ-2A20NA MXZ-4A36NA 2 Connect to the compressor Voltage among phases: 5 V to 180 V 294-370 V DC Output (Red) (+) 1 Connect to the earth CN2 Connect to the controller board (+)1-5(–): Signal transmission (To electronic control P.C. board) 5 V DC pulse wave (+)2-5(–): Zero cross signal 3-4 : Not used (+)6-5(–): 15 V (+)7-5(–): 15 V (–) 3 (White) CN3 Fin temperature thermistor RT64 reception (From ) Signal electronic control P.C. board) 5 V DC pulse wave CN5 Primary current detection (Connect to the noise filter) Connect to the compressor Voltage among phases: 5 V to 180 V Connect to the earth 294-370 V DC Output (Red) (+) 1 CN2 Connect to the controller board (+)1-5(–): Signal transmission (To electronic control P.C. board) 5 V DC pulse wave (+)2-5(–): Zero cross signal 3-4 : Not used (+)6-5(–): 15 V (+)7-5(–): 15 V (–) 3 (White) CN3 Fin temperature thermistor RT64 reception (From ) Signal electronic control P.C. board) 5 V DC pulse wave CN5 Primary current detection (Connect to the noise filter) 73 12 DISASSEMBLY INSTRUCTIONS <"Terminal with locking mechanism" Detaching points> The terminal which has the locking mechanism can be detached as shown below. There are two types ( Refer to (1) and (2)) of the terminal with locking mechanism. The terminal without locking mechanism can be detached by pulling it out. Check the shape of the terminal before detaching. (1) Slide the sleeve and check if there is a locking lever or not. (2) The terminal with this connector has the locking mechanism. Sleeve Locking lever Slide the sleeve. Pull the terminal while pushing the locking lever. Hold the sleeve, and pull out the terminal slowly. Connector 12-1. MXZ-2A20NA MXZ-2A20NA OUTDOOR UNIT 1 OPERATING PROCEDURE PHOTOS 1. Removing the compressor Photo 1 (1) Remove the screws of the top panel, and remove the top panel. (2) Remove the screws of the service panel, and remove the service panel. (3) Recover gas from the refrigerant circuit. NOTE : Recover gas from the pipes until the pressure gauge shows 0 PSIG. (4) Remove the screws of the cabinet, and remove the cabinet. (5) Remove the screws of the back panel, and remove the back panel (Photo 3). (6) Disconnect the compressor lead wire from terminal of the compressor (U, V, W). (7) Disconnect the outdoor electronic control P.C. board connectors: CN661, CN662 (MXZ-2A20NA), CN663, CN791, CN792, CN795, CN931, CN932 Disconnect the noise filter P.C. board connector: CN912 (8) Remove the screws of the electrical parts, and remove the electrical parts (Photo 4). (9) Remove the propeller. (10) Remove the screws of the separator, and remove the separator (Photo 6). (11) Remove the sound proof felt (Photo 6). (12) Detach the welded parts of the compressor suction and discharge pipes (Photo 5). (13) Remove the compressor nuts and remove the compressor. Screws of the cabinet Screws of service panel Screw of the cabinet Screws of the cabinet Photo 2 Screws of the top panel Screws of the cabinet 74 Screws of the top panel Screws of the cabinet PHOTOS OPERATING PROCEDURE Photo 3 Screw of the rear guard Screws of the back panel Photo 5 R.V. coil 4-way valve Screws of the back panel LEV coil E Expansion valve E Screws of the back panel Discharge pipe welded part Photo 4 Suction pipe welded part Compressor nuts Screws of the electrical parts Photo 6 2. Removing the fan motor (1) Remove the top panel, the service panel, and the cabinet (Photo 1). (2) Disconnect the connectors CN931 and CN932 on the outdoor electronic control P.C. board. (3) Remove the propeller. (4) Remove the fan motor. Screws of the outdoor fan motor Propeller Propeller nut 75 Separator Sound proof felt OPERATING PROCEDURE PHOTOS 3. Removing the 4-way valve Photo 7 (1) Remove the top panel (Photo 1). (2) Remove the service panel, the cabinet and the back panel (Photo 1, 2, 3). (3) Recover gas from the refrigerant circuit. NOTE : Recover gas from the pipes until the pressure gauge shows 0 PSIG. (4) Remove the electrical parts (Photo 4). (5) Detach the welded parts of 4-way valve and pipe. R.V. coil 4-way valve Welded parts 4. Removing the expansion valve (1) Remove the top panel (Photo 1). (2) Remove the service panel, the cabinet and the back panel (Photo 1, 2, 3). (Gas recovery is not required if the unit is pumped down.) (3) Remove the cabinet for removing LEV E (Photo 1, 2, 5). (4) Remove the electrical parts for removing LEV E (Photo 4, 5). (5) Remove the LEV coils. (6) Detach the welded parts of expansion valves and pipes. Photo 8 Expansion valves LEV coils 5. Removing the reactor (1) Remove the top panel (Photo 1). (2) Remove the service panel, cabinet, back panel and the relay panel. (3) Disconnect the reactor lead wire from the terminal of the reactor. (4) Remove the screws of the reactor, and remove the reactor (Photo 9). Photo 9 Screws of the reactor 76 12-2. MXZ-2A20NA - 2 OUTDOOR UNIT OPERATING PROCEDURE PHOTOS 1. Removing the compressor Photo 1 Screws of the top panel (1) Remove the screws of the top panel, and remove the top panel. (2) Remove the screws of the service panel, and remove the service panel. (3) Recover gas from the refrigerant circuit. NOTE: Recover gas from the pipes until the pressure gauge shows 0 PSIG. (4) Remove the screws of the cabinet, and remove the cabinet. (5) Remove the screws of the back panel, and remove the back panel (Photo 3). (6) Disconnect the compressor lead wire from terminal of the compressor (U, V, W). (7) Disconnect the outdoor electronic control P.C. board connectors: CN661, CN663, CN791, CN792, CN795, CN931, CN932 Disconnect the noise filter P.C. board connector: CN912 (8) Remove the screws of the electrical parts, and remove the electrical parts (Photo 4). (9) Remove the propeller. (10) Remove the screws of the separator, and remove the separator (Photo 6). (11) Remove the sound proof felt (Photo 6). (12) Detach the welded parts of the compressor suction and discharge pipes (Photo 5). (13) Remove the compressor nuts and remove the compressor. Screws of the cabinet Screws of service panel Screws of the cabinet Photo 2 Screws of the top panel 2. Removing the electronic control P.C. board (1) Remove the screws of the sub panel. (2) Remove the sub panel. (3) Disconnect all connectors and lead wires on the electronic control P.C. board. (4) Remove the electronic control P.C. board. 77 Screws of the cabinet Screw of the cabinet Screws of the cabinet Screws of the sub panel PHOTOS OPERATING PROCEDURE Photo 3 Screw of the rear guard Screw of the back panel Photo 5 R.V. coil 4 way valve Screws of the back panel LEV coil E Expansion valve E Suction pipe welded part Screws of the back panel Photo 4 Discharge pipe welded part Screw of the back panel Screws of the electrical parts Compressor nuts 3. Removing the fan motor (1) Remove the top panel, the service panel, and the cabinet (Photo 1, 2). (2) Disconnect the connector CN931 and CN932 on the outdoor electronic control P.C. board. (3) Remove the propeller. (4) Remove the fan motor. Photo 6 Screws of the outdoor fan motor Propeller nut Propeller 78 Separator Sound proof felt OPERATING PROCEDURE PHOTOS Photo 7 4. Removing the 4-way valve (1) Remove the top panel (Photo 1). (2) Remove the service panel, the cabinet, and the back panel (Photo 1, 2, 3). (3) Recover gas from the refrigerant circuit. NOTE: Recover gas from the pipes until the pressure gauge shows PSIG. 4 way valve (4) Remove the electrical parts (Photo 4). (5) Detach the welded parts of 4-way valve and pipe (Photo 7). R.V. coil Welded parts 5. Removing the expansion valve Photo 8 (1) Remove the top panel (Photo 1). (2) Remove the service panel, the cabinet, and the back panel (Photo 1, 2, 3). (Gas recovery is not required if the unit is pumped down.) (3) Remove the electrical parts for removing LEV E (Photo 4, 5). (4) Remove the LEV coils. (5) Detach the welded parts of expansion valves and pipes. Expansion valves LEV coils 6. Removing the reactor Photo 9 (1) Remove the top panel (Photo 1). (2) Remove the service panel, cabinet, back panel, and the electrical parts (Photo 1, 2, 3, 4). (3) Disconnect the reactor lead wire from the terminal of the reactor. (4) Remove the screws of the reactor, and remove the reactor (Photo 9). Screws of the reactor 79 12-3. MXZ-3A30NA OUTDOOR UNIT OPERATING PROCEDURE PHOTOS 1. Removing the compressor Photo 1 (1) Remove the screws of the top panel, and remove the top panel (Photo 1). (2) Remove the screws of the service panel, and remove the service panel (Photo 1). (3) Recover gas from the refrigerant circuit. NOTE : Recover gas from the pipes until the pressure gauge shows 0 PSIG. (4) Remove the screws of the front panel, and remove the front panel. (5) Disconnect the compressor lead wire from terminal of compressor (U, V, W). (6) Disconnect the outdoor electronic control P.C. board connectors: CN661, CN662 , CN663, CN681, CN791, CN792, CN793, CN795, CN931, CN932 Disconnect the noise filter P.C. board connector: CN912 (7) Remove the screws of the electrical parts, and remove the electrical parts (Photo 2). (8) Remove the propeller. (9) Remove the screws of the separator, and remove the separator. (10) Remove the sound proof felt. (11) Detach the welded parts of the compressor suction and discharge pipes (Photo 3). (12) Remove the compressor nuts and remove the compressor. Screws of service panel Screws of the front panel Photo 2 Screws of the electrical parts Photo 3 LEV coil E Expansion valve E Suction pipe welded part Discharge pipe welded part 80 Screws of the top panel PHOTOS OPERATING PROCEDURE Photo 4 2. Removing the fan motor (1) Remove the top panel, the service panel, and the front panel (Photo 1). (2) Disconnect the connectors CN931 and CN932 on the outdoor electronic control P.C. board. (3) Remove the propeller. (4) Remove the fan motor. Screws of the outdoor fan motor Separator Propeller Sound proof felt Propeller nut 3. Removing the 4-way valve (1) Remove the top panel (Photo 1). (2) Remove the service panel, rear panel, and pipe cover. (3) Recover gas from the refrigerant circuit. NOTE : Recover gas from the pipes until the pressure gauge shows 0 PSIG. (4) Remove the electrical parts (Photo 2). (5) Detach the welded parts of 4-way valve and pipe. Compressor nuts Photo 5 4 way valve R.V. coil Welded parts 4. Removing the expansion valve (1) Remove the top panel (Photo 1). (2) Remove the service panel (Photo 1). (Gas recovery is not required if the unit is pumped down.) (3) Remove the front panel for removing LEV E (Photo 1, 3). (4) Remove the electrical parts for removing LEV E (Photo 2, 3). (5) Remove the LEV coils. (6) Detach the welded parts of expansion valves and pipes. Photo 6 LEV coils 81 Expansion valves OPERATING PROCEDURE PHOTOS 5. Removing the reactor (1) Remove the top panel (Photo 1). (2) Disconnect the reactor lead wire. (3) Remove the screws of the reactor, and remove the reactor. Photo 7 Screws of the reactor 82 12-4. MXZ-3A30NA - 1 MXZ-4A36NA OUTDOOR UNIT Photo : MXZ-3A30NA - OPERATING PROCEDURE 1 PHOTOS Photo 1 Screws of the top panel 1. Removing the compressor (1) Remove the screws of the top panel, and remove the top panel. (2) Remove the screws of the service panel, and remove the service panel. (3) Recover gas from the refrigerant circuit. NOTE : Recover gas from the pipes until the pressure gauge shows 0 PSIG. (4) Remove the screws of the front panel, and remove the front panel. (5) Remove the screws of the rear panel, and remove the rear panel. (6) Disconnect the compressor lead wire from terminal of compressor (U, V, W). (7) Disconnect the outdoor electronic control P.C. board connectors: CN661, CN663, CN681, CN791, CN792, CN793, CN794 (MXZ-4A36NA), CN796, CN931, CN932 Disconnect the noise filter P.C. board connector: CN912 (8) Remove the screws of the electrical parts, and remove the electrical parts. (9) Remove the propeller. (10) Remove the screws of the separator, and remove the separator. (11) Remove the sound proof felt (Photo 5). (12) Detach the welded parts of the compressor suction and discharge pipes (Photo 4). (13) Remove the compressor nuts and remove the compressor. Screws of service panel Screws of the front panel Photo 2 Screws of the top panel Screws of the side panel Photo 4 Screws of the service panel Screws of the rear panel Photo 3 Suction pipe welded part Discharge pipe welded part Screws of the electrical parts 83 Photo : MXZ-3A30NA - 1 PHOTOS OPERATING PROCEDURE Photo 5 2. Removing the fan motor (1) Remove the top panel, the service panel, and the front panel (Photo 1, 2). (2) Disconnect the connectors CN931 and CN932 on the outdoor electronic control P.C. board. (3) Remove the propeller. (4) Remove the fan motor. Screws of the outdoor fan motor Propeller Propeller nut Separator Sound proof felt Photo 6 3. Removing the 4-way valve (1) Remove the top panel (Photo 1, 2). (2) Remove the service panel, rear panel, and pipe cover (Photo 1,2). (3) Recover gas from the refrigerant circuit. NOTE : Recover gas from the pipes until the pressure gauge shows 0 PSIG. (4) Remove the electrical parts (Photo 3). (5) Detach the welded parts of 4-way valve and pipe. 4 way valve R.V. coil Welded parts 4. Removing the expansion valve Photo 7 (1) Remove the top panel (Photo 1, 2). (2) Remove the service panel (Photo 1, 2). (Gas recovery is not required if the unit is pumped down.) (3) Remove the front panel for removing LEV F (Photo 1). (4) Remove the electrical parts for removing LEV F (Photo 3). (5) Remove the LEV coils. (6) Detach the welded parts of expansion valves and pipes. LEV coil F Expansion valve F Expansion valves LEV coils 84 Photo : MXZ-3A30NA - OPERATING PROCEDURE PHOTOS 5. Removing the reactor Photo 8 (1) Remove the top panel (Photo 1, 2). (2) Disconnect the reactor lead wire. (3) Remove the screws of the reactor, and remove the reactor. Screws of the reactor 85 1 PARTS LIST (non-RoHS compliant) 13 MXZ-2A20NA 13-1. OUTDOOR UNIT STRUCTURAL PARTS AND FUNCTIONAL PARTS 21 19 20 22 18 23 17 16 15 14 1 13 2 3 4 5 6 7 8 86 9 10 11 12 PARTS LIST (non-RoHS compliant) MXZ-2A20NA 13-1. OUTDOOR UNIT STRUCTURAL PARTS AND FUNCTIONAL PARTS Part numbers that are circled are not shown in the illustration. No. Parts No. Parts Name Symbol in Wiring Diagram Q'ty/unit 1 E02 939 232 CABINET 2 E02 817 009 HANDLE 1 3 E02 939 521 GRILLE 1 4 E02 B05 900 COMPRESSOR 5 E02 065 506 COMPRESSOR RUBBER SET 6 7 1 MC E02 851 640 EXPANSION VALVE E02 939 493 LEV COIL 1 SNB130FPDH1 3 3 RUBBERS SET 1 B room LEV B 1 B room 1 A room LEV A 1 A room E02 851 640 EXPANSION VALVE E02 938 493 LEV COIL Remakes MXZ-2A20NA 8 E02 939 290 BASE 1 9 E02 939 666 UNION(GAS) 2 3/8 10 E02 939 667 UNION(LIQUID) 2 1/4 11 E02 939 233 BACK PANEL 1 12 E02 939 245 SERVICE PANEL 1 13 E02 B05 661 BALL VALVE (GAS) 1 5/8 14 E02 939 662 BALL VALVE (LIQUID) 1 3/8 15 E02 938 959 POWER RECEIVER 1 16 E02 819 640 EXPANSION VALVE 1 LEV E E 17 E02 819 493 LEV COIL 18 E02 A56 961 4-WAY VALVE 1 19 E02 819 297 TOP PANEL 1 20 E02 939 523 REAR GUARD 1 21 E02 B05 630 HEAT EXCHANGER 1 22 E02 939 515 MOTOR SUPPORT 1 23 E02 A49 641 SERVICE PORT 2 24 E02 938 937 CAPILLARY TUBE 8 O.D.0.14 x I.D.0.09 x 19.68 25 E02 939 936 CAPILLARY TUBE 2 O.D.0.16 x I.D.0.11 x 3.93 26 E02 938 936 CAPILLARY TUBE 1 O.D.0.10 x I.D.0.02 x 39.37 27 E02 B05 299 OIL SEPARATOR 1 1 87 PARTS LIST (non-RoHS compliant) MXZ-2A20NA 13-2. OUTDOOR UNIT FUNCTIONAL PARTS AND ELECTRICAL PARTS 12 11 10 9 8 1 2 3 4 5 88 6 7 PARTS LIST (non-RoHS compliant) MXZ-2A20NA 13-2. OUTDOOR UNIT FUNCTIONAL PARTS AND ELECTRICAL PARTS No. Parts No. Parts Name 1 E02 851 501 PROPELLER 2 E02 A58 301 OUTDOOR FAN MOTOR 3 E02 B05 440 POWER BOARD Symbol in Wiring Diagram Q'ty/unit MXZ-2A20NA Remakes 1 MF 1 RC0J60- 1 Including heat sink and RT64 4 E02 B05 450 ELECTRONIC CONTROL P.C. BOARD 1 5 E02 B05 444 NOISE FILTER P.C. BOARD 1 6 E02 927 374 TERMINAL BLOCK TB2,3 2 Indoor unit connecting 7 E02 A53 374 TERMINAL BLOCK TB1 1 Power supply 8 E02 977 307 GAS PIPE TEMPERATURE THERMISTOR SET RT6A,B 1 21S4 1 RT61,62,68 1 9 E02 B05 490 R.V. COIL 10 E02 938 308 THERMISTOR SET 11 E02 938 309 AMBIENT TEMPERATURE THERMISTOR 12 E02 938 337 REACTOR RT65 1 L 1 89 DEFROST, DISCHARGE OUTDOOR HEAT EXCHANGER 20A 600μH PARTS LIST (non-RoHS compliant) MXZ-3A30NA 13-3. OUTDOOR UNIT STRUCTURAL PARTS AND FUNCTIONAL PARTS 24 23 22 21 20 25 19 18 17 16 15 14 13 12 1 2 11 5 6 7 8 9 10 3 4 90 PARTS LIST (non-RoHS compliant) MXZ-3A30NA 13-3. OUTDOOR UNIT STRUCTURAL PARTS AND FUNCTIONAL PARTS Part numbers that are circled are not shown in the illustration. No. Parts No. Parts Name Symbol in Wiring Diagram Q'ty/unit Remakes MXZ-3A30NA 1 M21 TK0 232 FRONT PANEL 1 2 M21 TK0 027 HANDLE ASSEMBLY 2 3 M21 TK5 010 GRILLE 1 4 M21 TK0 245 SERVICE PANEL 1 5 T 9 2 5 0 0 8 0 1 COMPRESSOR 1 TNB220FMCH 6 T2W TK0 505 COMPRESSOR RUBBER SET 3 3 RUBBERS SET R01 E39 401 EXPANSION VALVE 1 C room 7 8 9 10 T2W TK0 653 LEV COIL MC LEV C R01 E39 401 EXPANSION VALVE T2W TK0 652 LEV COIL LEV B R01 E39 401 EXPANSION VALVE T2W TK0 651 LEV COIL LEV A 1 C room 1 B room 1 B room 1 A room 1 A room M21 TK0 290 BASE ASSEMBLY 1 1/2, 3/8, 1/4 SET 11 M21 42E 644 UNION 1 12 T2W TK0 247 PIPE COVER 1 13 M21 TK5 667 BALL VALVE (LIQUID) 3/8 1 3/8 14 T2W J7E 667 BALL VALVE (GAS) 5/8 1 5/8 15 M21 J7E 248 REAR PANEL 1 16 T2W TK0 959 POWER RECEIVER 1 17 T2W J7E 961 4-WAY VALVE 1 18 M21 NT1 646 HIGH PRESSURE SWITCH 19 T2W WW8 401 EXPANSION VALVE HPS LEV E 1 4.8 MPa (48.9 kg/cm2) 1 E 20 T2W TK0 651 LEV COIL 21 M21 TK0 297 TOP PANEL 1 22 T2W E40 523 REAR GUARD 1 23 M21 J7E 630 HEAT EXCHANGER 1 24 M21 TK0 249 SIDE PANEL 1 25 M21 J7E 641 SERVICE PORT 2 26 M21 SJ4 937 CAPILLARY TUBE 2 O.D.0.16 x I.D.0.09 x 15.75 27 M21 TK0 936 CAPILLARY TUBE 3 O.D.0.16 x I.D.0.11 x 3.54 28 T2W E59 936 CAPILLARY TUBE 1 O.D.0.10 x I.D.0.02 x 39.37 29 T2W J7E 656 OIL SEPARATOR 1 91 1 PARTS LIST (non-RoHS compliant) MXZ-3A30NA 13-4. OUTDOOR UNIT FUNCTIONAL PARTS AND ELECTRICAL PARTS 12 11 10 9 8 7 1 2 3 4 92 5 6 PARTS LIST (non-RoHS compliant) MXZ-3A30NA 13-4. OUTDOOR UNIT FUNCTIONAL PARTS AND ELECTRICAL PARTS No. Parts No. Parts Name 1 M21 TK0 501 PROPELLER 2 T2W J7E 301 OUTDOOR FAN MOTOR 3 4 5 M21 TK0 337 REACTOR 6 T2W J7E 424 NOISE FILTER P.C. BOARD 7 Symbol in Wiring Diagram Q'ty/unit MXZ-3A30NA Remakes 1 MF 1 RC0J60- T2W J7E 440 POWER BOARD 1 Including heat sink and RT64 T2W J7E 451 ELECTRONIC CONTROL P.C. BOARD 1 L 1 20 A 600 μH T2W YH1 376 TERMINAL BLOCK TB2~4 3 Indoor unit connecting 8 T2W J7E 376 TERMINAL BLOCK TB1 1 Power supply 9 T2W E88 307 GAS PIPE TEMPERATURE THERMISTOR RT6A,B,C 1 10 T2W J7E 398 R.V. COIL 11 M21 G0H 308 THERMISTOR SET 12 M21 90V 309 AMBIENT TEMPERATURE THERMISTOR 1 21S4 1 RT61,62,68 1 RT65 1 93 DEFROST, DISCHARGE, OUTDOOR HEAT EXCHANGER RoHS PARTS LIST (RoHS compliant) 14 MXZ-2A20NA MXZ-2A20NA - 1 14-1. OUTDOOR UNIT STRUCTURAL PARTS AND FUNCTIONAL PARTS 21 19 20 22 18 23 17 16 15 14 1 13 2 3 4 5 6 7 8 94 9 10 11 12 PARTS LIST (RoHS compliant) MXZ-2A20NA MXZ-2A20NA - 1 14-1. OUTDOOR UNIT STRUCTURAL PARTS AND FUNCTIONAL PARTS Part numbers that are circled are not shown in the illustration. No. RoHS Symbol in Wiring Diagram 1 G 2 G 3 G E12 939 521 GRILLE G E12 B05 900 COMPRESSOR MC MC 4 5 6 7 8 9 10 Parts No. Parts Name Q'ty/unit MXZ2A20NA MXZ2A20NA- 1 E12 939 232 CABINET 1 1 E12 817 009 HANDLE 1 1 1 1 1 Remakes SNB130FPDH1 G E12 C15 900 COMPRESSOR 1 SNB130FQBH1 G E12 065 506 COMPRESSOR RUBBER SET 3 3 3 RUBBERS SET G E12 851 640 EXPANSION VALVE 1 1 B room G E12 939 493 LEV COIL G E12 851 640 EXPANSION VALVE LEV B 1 B room 1 A room A room G E12 938 493 LEV COIL 1 1 G E12 939 290 BASE 1 1 G E12 C06 666 UNION(GAS) 2 G E12 C18 666 UNION(GAS) G E12 C06 667 UNION(LIQUID) G E12 C18 667 UNION(LIQUID) LEV A 1 1 3/8 2 3/8 2 1/4 1/4 2 11 G E12 939 233 BACK PANEL 1 1 12 G E12 939 245 SERVICE PANEL 1 1 13 G E12 C15 661 BALL VALVE (GAS) 1 1 5/8 14 G E12 C06 662 BALL VALVE (LIQUID) 1 1 3/8 G E12 938 959 POWER RECEIVER 1 G E12 C18 959 POWER RECEIVER G E12 853 640 EXPANSION VALVE 15 16 1 LEV E 1 1 17 G E12 819 493 LEV COIL 1 1 18 G E12 A56 961 4-WAY VALVE 1 1 E 19 G E12 819 297 TOP PANEL 1 1 20 G E12 939 523 REAR GUARD 1 1 21 G E12 B05 630 HEAT EXCHANGER 1 1 22 G E12 939 515 MOTOR SUPPORT 1 1 23 G E12 A49 641 SERVICE PORT 2 2 24 G E12 938 937 CAPILLARY TUBE 8 8 O.D.0.14 x I.D.0.09 x 19.68 25 G E12 939 936 CAPILLARY TUBE 2 2 O.D.0.16 x I.D.0.11 x 3.93 26 G E12 938 936 CAPILLARY TUBE 1 1 O.D.0.10 x I.D.0.02 x 39.37 27 G E12 B05 299 OIL SEPARATOR 1 1 95 RoHS PARTS LIST (RoHS compliant) MXZ-2A20NA MXZ-2A20NA - 1 14-2. OUTDOOR UNIT FUNCTIONAL PARTS AND ELECTRICAL PARTS 12 11 10 9 8 1 2 3 4 5 96 6 7 PARTS LIST (RoHS compliant) No. RoHS MXZ-2A20NA MXZ-2A20NA - 1 14-2. OUTDOOR UNIT FUNCTIONAL PARTS AND ELECTRICAL PARTS Parts No. Parts Name 1 G E12 851 501 PROPELLER 2 G E12 A58 301 OUTDOOR FAN MOTOR 3 4 G E12 B05 440 POWER BOARD G E12 C15 440 POWER BOARD G E12 B05 450 ELECTRONIC CONTROL P.C. BOARD Q'ty/unit Symbol in Wiring Diagram MXZ2A20NA 1 1 MF 1 1 MXZ2A20NA- 1 1 Remakes RC0J60Including heat sink and RT64 1 Including heat sink and RT64 1 G E12 C15 450 ELECTRONIC CONTROL P.C. BOARD G E12 B05 444 NOISE FILTER P.C. BOARD 6 G E12 927 374 TERMINAL BLOCK TB2,3 2 2 Indoor unit connecting 7 G E12 A53 374 TERMINAL BLOCK TB1 1 1 Power supply 8 G E12 977 307 GAS PIPE TEMPERATURE THERMISTOR SET 9 G E12 B05 490 R.V. COIL 10 G E12 938 308 THERMISTOR SET 11 G E12 938 309 AMBIENT TEMPERATURE THERMISTOR 12 G E12 938 337 REACTOR 5 1 1 1 RT6A,B 1 21S4 1 1 RT61,62,68 1 1 RT65 1 1 L 1 1 97 DEFROST, DISCHARGE OUTDOOR HEAT EXCHANGER 20 A 600 μH MXZ-2A20NA - 2 14-3. OUTDOOR UNIT STRUCTURAL PARTS AND FUNCTIONAL PARTS 21 20 18 19 22 17 16 1 15 14 2 11 3 10 4 5 6 98 7 8 9 12 13 MXZ-2A20NA - 2 14-3. OUTDOOR UNIT STRUCTURAL PARTS AND FUNCTIONAL PARTS Part numbers that are circled are not shown in the illustration. Q'ty/unit No. RoHS Symbol in Wiring Diagram 1 G E12 D36 232 CABINET 1 2 G E12 817 009 HANDLE 1 3 G E12 939 521 GRILLE 1 4 G E12 D36 246 SUB PANEL 1 5 G E12 C15 900 COMPRESSOR 1 SNB130FQBH1 6 G E12 C34 506 COMPRESSOR RUBBER SET 3 3 RUBBERS SET G E12 851 640 EXPANSION VALVE 1 B room G E12 939 493 LEV COIL G E12 851 640 EXPANSION VALVE 7 8 Parts No. Parts Name MC LEV B LEV A Remakes MXZ-2A20NA- 2 1 B room 1 A room 1 A room G E12 938 493 LEV COIL 9 G E12 939 290 BASE 1 10 G E12 D36 666 UNION(GAS) 2 3/8 11 G E12 D36 667 UNION(LIQUID) 2 1/4 12 G E12 939 233 BACK PANEL 1 13 G E12 D36 245 SERVICE PANEL 1 14 G E12 D36 662 STOP VALVE (LIQUID) 3/8 1 3/8 15 G E12 C88 661 STOP VALVE (GAS) 5/8 1 5/8 16 G E12 C88 299 OIL SEPARATOR 1 17 G E12 A56 961 4-WAY VALVE 1 18 G E12 819 297 TOP PANEL 1 19 G E12 939 523 REAR GUARD 1 20 G E12 B05 630 OUTDOOR HEAT EXCHANGER 1 21 G E12 939 515 MOTOR SUPPORT 1 22 G E12 A49 641 SERVICE PORT 2 23 G E12 938 937 CAPILLARY TUBE 8 O.D.0.14 x I.D.0.09 x 19.68 24 G E12 939 936 CAPILLARY TUBE 2 O.D.0.16 x I.D.0.11 x 3.93 25 G E12 938 936 CAPILLARY TUBE 1 O.D.0.10 x I.D.0.02 x 39.37 26 G E12 C18 959 POWER RECEIVER 1 G E12 853 640 EXPANSION VALVE G E12 819 493 LEV COIL 27 1 LEV E 99 1 E MXZ-2A20NA - 2 14-4. OUTDOOR UNIT FUNCTIONAL PARTS AND ELECTRICAL PARTS 11 10 9 8 1 2 3 4 5 100 6 7 No. RoHS MXZ-2A20NA - 2 14-4. OUTDOOR UNIT FUNCTIONAL PARTS AND ELECTRICAL PARTS Parts No. Parts Name 1 G E12 851 501 PROPELLER 2 G E12 A58 301 OUTDOOR FAN MOTOR 3 G 4 G 5 Symbol in Wiring Diagram Q'ty/unit MXZ-2A20NA- 2 Remakes 1 1 RC0J60- E12 C15 440 POWER BOARD 1 Including heat sink and RT64 E12 C88 450 ELECTRONIC CONTROL P.C. BOARD 1 G E12 D38 444 NOISE FILTER P.C. BOARD 1 6 G E12 C92 375 TERMINAL BLOCK TB2~3 2 Indoor unit connecting 7 G E12 A53 374 TERMINAL BLOCK TB1 1 Power supply 8 G E12 B05 490 R.V. COIL 21S4 1 9 G E12 938 308 THERMISTOR SET RT61,62,68 1 10 G E12 938 309 AMBIENT TEMPERATURE THERMISTOR 11 G E12 938 337 REACTOR MF RT65 1 L 1 101 DEFROST, DISCHARGE OUTDOOR HEAT EXCHANGER 20 A 600 μH RoHS PARTS LIST (RoHS compliant) MXZ-3A30NA 14-5. OUTDOOR UNIT STRUCTURAL PARTS AND FUNCTIONAL PARTS 24 23 22 21 20 25 19 18 17 16 15 14 13 12 1 2 5 6 10 7 8 9 3 4 102 11 PARTS LIST (RoHS compliant) MXZ-3A30NA 14-5. OUTDOOR UNIT STRUCTURAL PARTS AND FUNCTIONAL PARTS Part numbers that are circled are not shown in the illustration. Q'ty/unit No. RoHS Symbol in Wiring Diagram 1 G M21 L2V 232 FRONT PANEL 1 2 G M21 L2V 027 HANDLE ASSEMBLY 2 3 G M21 L2V 010 GRILLE 1 4 G M21 L2V 245 SERVICE PANEL 1 5 G T92 505 801 COMPRESSOR 1 TNB220FMCH 6 G M21 L2V 505 COMPRESSOR RUBBER SET 3 3 RUBBERS SET G M21 L2V 401 EXPANSION VALVE 1 C room G M21 L2V 653 LEV COIL G M21 L2V 401 EXPANSION VALVE G M21 L2V 652 LEV COIL G M21 L2V 401 EXPANSION VALVE 7 8 9 Parts No. Parts Name MC LEV C LEV B LEV A Remakes MXZ-3A30NA 1 C room 1 B room 1 B room 1 A room 1 A room G M21 L2V 651 LEV COIL 10 G M21 L2V 290 BASE ASSEMBLY 1 11 G M21 L2V 644 UNION 1 12 G M21 L2V 247 PIPE COVER 1 1/2, 3/8, 1/4 SET 13 G M21 L2V 667 BALL VALVE (LIQUID) 3/8 1 3/8 14 G T2W L7V 668 BALL VALVE (GAS) 5/8 1 5/8 15 G T2W L7V 248 REAR PANEL 1 16 G T2W L7V 959 POWER RECEIVER 1 17 G T2W L7V 642 4-WAY VALVE 1 18 G M21 L2V 646 HIGH PRESSURE SWITCH 19 G M21 L2V 402 EXPANSION VALVE 20 G M21 L2V 651 LEV COIL 21 G M21 L2V 297 TOP PANEL HPS LEV E 1 4.8 MPa (48.9 kg/cm2) 1 E 1 1 22 G M21 L2V 523 REAR GUARD 1 23 G T2W L7V 630 HEAT EXCHANGER 1 24 G M21 L2V 249 SIDE PANEL 1 25 G T2W L7V 641 SERVICE PORT 2 26 G M21 L2V 937 CAPILLARY TUBE 2 O.D.0.16 x I.D.0.09 x 15.75 27 G M21 L2V 936 CAPILLARY TUBE 3 O.D.0.16 x I.D.0.11 x 3.54 28 G M21 L2V 938 CAPILLARY TUBE 1 O.D.0.10 x I.D.0.02 x 39.37 29 G T2W L7V 656 OIL SEPARATOR 1 103 RoHS PARTS LIST (RoHS compliant) MXZ-3A30NA 14-6. OUTDOOR UNIT FUNCTIONAL PARTS AND ELECTRICAL PARTS 12 11 10 9 8 7 1 2 3 4 104 5 6 PARTS LIST (RoHS compliant) No. RoHS MXZ-3A30NA 14-6. OUTDOOR UNIT FUNCTIONAL PARTS AND ELECTRICAL PARTS 1 G M21 L2V 501 PROPELLER 2 G T2W L7V 301 OUTDOOR FAN MOTOR 3 G 4 G 5 G M21 L2V 337 REACTOR 6 G T2W L7V 424 NOISE FILTER P.C. BOARD 7 G 8 9 Parts No. Parts Name Symbol in Wiring Diagram Q'ty/unit MXZ-3A30NA Remakes 1 MF 1 RC0J60- T2W L7V 440 POWER BOARD 1 Including heat sink and RT64 T2W L7V 451 ELECTRONIC CONTROL P.C. BOARD 1 L 1 20 A 600 μH T2W L2V 376 TERMINAL BLOCK TB2~4 3 Indoor unit connecting G T2W L7V 377 TERMINAL BLOCK TB1 1 Power supply G M21 L7V 307 GAS PIPE TEMPERATURE THERMISTOR RT6A,B,C 1 10 G T2W L7V 398 R.V. COIL 11 G M21 L2V 308 THERMISTOR SET 12 G M21 L2V 309 AMBIENT TEMPERATURE THERMISTOR 1 21S4 1 RT61,62,68 1 RT65 1 105 DEFROST, DISCHARGE, OUTDOOR HEAT EXCHANGER RoHS PARTS LIST (RoHS compliant) MXZ-3A30NA - 1 MXZ-4A36NA 14-7. OUTDOOR UNIT STRUCTURAL PARTS AND FUNCTIONAL PARTS 22 20 21 19 18 16 23 15 17 14 24 1 2 13 5 6 2 7 8 9 10 12 11 3 4 106 RoHS PARTS LIST (RoHS compliant) MXZ-3A30NA - 1 MXZ-4A36NA 14-7. OUTDOOR UNIT STRUCTURAL PARTS AND FUNCTIONAL PARTS Part numbers that are circled are not shown in the illustration. Q'ty/unit No. RoHS Symbol in Wiring Diagram 1 G M21 0A2 232 FRONT PANEL 1 1 2 G M21 0A2 027 HANDLE ASSEMBLY 2 2 3 G M21 L2V 010 GRILLE 1 1 4 G M21 0A2 245 SERVICE PANEL 1 1 5 G T92 505 801 COMPRESSOR 1 1 TNB220FMCH 6 G M21 L2V 505 COMPRESSOR RUBBER SET 3 3 3 RUBBERS SET G M21 L2V 401 EXPANSION VALVE 1 D room G M21 L2V 654 LEV COIL G M21 L2V 401 EXPANSION VALVE G M21 L2V 653 LEV COIL G M21 L2V 401 EXPANSION VALVE G M21 L2V 652 LEV COIL G M21 L2V 401 EXPANSION VALVE 7 8 9 10 11 Parts No. Parts Name MC MXZ3A30NA- 1 LEV D 1 LEV C LEV B LEV A Remakes MXZ4A36NA 1 D room 1 C room 1 1 C room 1 1 B room 1 1 B room 1 1 A room A room G M21 L2V 651 LEV COIL 1 1 G M21 0A2 290 BASE ASSEMBLY 1 1 12 G M21 0A2 644 UNION 1 1 1/2, 3/8, 1/4 SET 13 G M21 0A2 668 STOP VALVE (LIQUID) 3/8 1 1 3/8 14 G M21 0A6 667 STOP VALVE (GAS) 5/8 1 1 5/8 15 G M21 0A2 248 REAR PANEL 1 1 16 G T2W L7V 642 4-WAY VALVE 1 1 17 G M21 L2V 646 HIGH PRESSURE SWITCH 1 1 G M21 L2V 402 EXPANSION VALVE 18 HPS 1 4.8 MPa (48.9 kg/cm2) F G M21 0A2 402 EXPANSION VALVE 19 G M21 0A2 652 LEV COIL 20 G M21 L2V 297 TOP PANEL 1 1 21 G M21 0A2 523 REAR GUARD 1 1 G T2W 0A6 630 HEAT EXCHANGER 1 G T2W 0A2 630 HEAT EXCHANGER 23 G M21 L2V 249 SIDE PANEL 1 1 24 G T2W L7V 641 SERVICE PORT 2 2 25 G T2W L7V 959 POWER RECEIVER 1 1 26 G M21 0A2 937 CAPILLARY TUBE 2 2 O.D.0.12 x I.D.0.08 x 11.8 27 G M21 0A2 936 CAPILLARY TUBE 3 4 O.D.0.16 x I.D.0.11 x 3.94 28 G M21 L2V 938 CAPILLARY TUBE 1 1 O.D.0.10 x I.D.0.02 x 39.37 29 G T2W L7V 656 OIL SEPARATOR 1 1 22 1 LEV F 1 F 1 1 107 RoHS PARTS LIST (RoHS compliant) MXZ-3A30NA - 1 MXZ-4A36NA 14-8. OUTDOOR UNIT FUNCTIONAL PARTS AND ELECTRICAL PARTS 11 10 9 8 7 1 2 3 108 4 5 6 RoHS PARTS LIST (RoHS compliant) No. RoHS MXZ-3A30NA - 1 MXZ-4A36NA 14-8. OUTDOOR UNIT FUNCTIONAL PARTS AND ELECTRICAL PARTS Parts No. Parts Name 1 G M21 L2V 501 PROPELLER 2 G T2W L7V 301 OUTDOOR FAN MOTOR 3 G G G T2W 2G6 451 ELECTRONIC CONTROL P.C. BOARD 4 Q'ty/unit Symbol in Wiring MXZMXZDiagram 3A30NA- 1 4A36NA Remakes 1 1 1 1 PM8H60- M21 0A1 440 POWER BOARD 1 1 Including heat sink and RT64 T2W 0A6 451 ELECTRONIC CONTROL P.C. BOARD 1 5 G M21 L2V 337 REACTOR 6 G M21 0A0 424 NOISE FILTER P.C. BOARD 7 G T2W 0A2 376 TERMINAL BLOCK 8 G T2W L7V 377 TERMINAL BLOCK 9 G T2W L7V 398 R.V. COIL 10 G M21 L2V 308 THERMISTOR SET 11 G M21 0A2 309 AMBIENT TEMPERATURE THERMISTOR MF 1 L 1 1 1 1 TB2~5 3 4 Indoor unit connecting TB1 1 1 Power supply 21S4 1 1 RT61,62,68 1 1 RT65 1 1 109 20 A 600 μH DEFROST, DISCHARGE, OUTDOOR HEAT EXCHANGER 15 OPTIONAL PARTS 15-1. DIFFERENT-DIAMETER PIPE MXZ-2A20NA MXZ-2A20NA MXZ-2A20NA MXZ-3A30NA MXZ-3A30NA MXZ-4A36NA Unit : inch 1 2 Model name Connected pipes diameter Length A Length B Length C 1 A MAC-A454JP 3/8 — 1/2 3/8 1/2 B 2.72 C For differentdiameter pipes MAC-A455JP 1/2 — 3/8 1/2 3/8 2.56 MAC-A456JP 1/2 — 5/8 1/2 5/8 2.62 PAC-493PI 1/4 — 3/8 1/4 3/8 2.38 PAC-SG76RJ-E 3/8 — 5/8 3/8 5/8 4 15-2. OUTLET GUIDE Changes air discharge direction. Model name Model code 3-1/8" 17-3/4" 1-11/16" Z MAC-889SG 2-13/16" Punched hole 2-1/32" 4-5/16" 1-5/32" 5-29/32" 15-3/16" 21-1/32" 110 1/4" 32-3/4" 16-3/8" 29-15/16" 1/4" 24-1/32" 21-1/32" 15-3/16" Z-Z Punched hole MAC-855SG 1-5/32" 51H-855 21-5/32" 1 17/32" 1-7/8" 52. 5° MAC-855SG 2 5/8" 506-889 Z 13/32 x 1-7/8" MAC-889SG 9/32" 20-5/8" 12-7/8" 1 21-3/16" 9/32" 4-1/16" Applied unit MXZ-2A20NA MXZ-2A20NA MXZ-2A20NA MXZ-3A30NA MXZ-3A30NA MXZ-4A36NA Unit : inch 111 TM HEAD OFFICE: TOKYO BLDG., 2-7-3, MARUNOUCHI, CHIYODA-KU, TOKYO 100-8310, JAPAN Copyright 2006 MITSUBISHI ELECTRIC ENGINEERING CO.,LTD Distributed in Jun. 2008. No. OB444 REVISED EDITION-D 6 Distributed in Oct. 2007. No. OB444 REVISED EDITION-C 9 Distributed in May 2007. No. OB444 REVISED EDITION-B 9 Distributed in Jun. 2006. No. OB444 REVISED EDITION-A 8 Distributed in Mar. 2006. No. OB444 8 Made in Japan New publication, effective Jun. 2008 Specifications subject to change without notice.