Download Mitsubishi Electric MUCFH-24NV- E3 Service manual
Transcript
OB206t-1.qxp 25/9/97 6:42 PM Page 1 This Servise Manual OB206 deals with MS-07/09/12/18/24NV-E1, MU-07/09/12/18/24NV-E1, MS-18NV-E2, and MU-18NV-E2 in OB175 THIRD EDITION issued in June in 1997. Therfore, please refer to OB206, not to OB175 THIRD EDITION, for the above models. SPLIT-TYPE,HEAT PUMP AIR CONDITIONERS No. OB206 SERVICE MANUAL Wireless type Models MS-07NV MS-09NV MS-12NV MS-18NV MS-24NV MS-07NV MS-09NV MS-12NV MS-18NV MS-24NV MS-18NV - E1 (WH) E1 (WH) E1 (WH) E1 (WH) E1 (WH) E2 (WH) E2 (WH) E2 (WH) E2 (WH) E2 (WH) E3 (WH) · · · · · · · · · · · MU-07NV MU-09NV MU-12NV MU-18NV MU-24NV MU-07NV MU-09NV MU-12NV MU-18NV MU-24NV MU-18NV - E1 E1 E1 E1 E1 E2 E2 E2 E2 E2 E3 CONTENTS MS-18NV MS-24NV MS-18NV MS-24NV MS-18NV - E1 E1 E2 E2 E3 1. TECHNICAL CHANGES ····································2 2. PART NAMES AND FUNCTIONS······················3 3. SPECIFICATION·················································6 4. OUTLINES AND DIMENSIONS ·························9 5. WIRING DIAGRAM ··········································12 6. REFRIGERANT SYSTEM DIAGRAM ··············20 7. PERFORMANCE CURVES ······························24 8. MICROPROCESSOR CONTROL ····················27 9. SERVICE FUNCTIONS ····································34 10. TROUBLESHOOTING······································37 11. DISASSEMBLY INSTRUCTIONS·····················45 12. PARTS LIST······················································53 13. OPTIONAL PARTS···········································61 OB206t-1.qxp 1 25/9/97 6:42 PM Page 2 TECHNICAL CHANGES MS-07NV - E1 ➔MS-07NV - E2 1. Indoor electronic control P.C. board has changed. However, it is compatible between E1 and E2 models. 2. Auto restart function is added. MS-09NV - E1 ➔MS-09NV - E2 1. Indoor electronic control P.C. board has changed. However, it is compatible between E1 and E2 models. 2. Auto restart function is added. 3. Refrigerant filling capacity (R-22) has changed. (900g ➔850g) MS-12NV - E1 ➔MS-12NV - E2 1. Indoor electronic control P.C. board has changed. However, it is compatible between E1 and E2 models. Auto restart function is added. MS-18NV - E2 ➔MS-18NV - E3 1. Indoor electronic control P.C. board has changed. However, it is compatible between E2 and E3 models. 2. Auto restart function is added. MS-24NV - E1 ➔MS-24NV - E2 1. Indoor electronic control P.C. board has changed. However, it is compatible between E1 and E2 models. 2. Auto restart function is added. 2 OB206t-1.qxp 25/9/97 6:42 PM 2 Page 3 PART NAMES AND FUNCTIONS INDOOR UNIT MS-07NV - E1 MS-07NV - E2 MS-09NV - E1 MS-09NV - E2 MS-12NV - E1 MS-12NV - E2 (When the front panel is open) MS-07NV MS-07NV - E1 E2 MS-09NV MS-09NV - MS-18NV - E1 MS-18NV - E2 E1 E2 MS-12NV MS-12NV - MS-24NV - E1 MS-24NV - E2 E1 MS-07NV MS-07NV - MS-18NV MS-24NV MS-18NV MS-24NV MS-18NV E1 E2 MS-09NV MS-09NV - E1 E2 - E1 - E1 - E2 - E2 - E3 MS-12NV MS-12NV - E1 E2 E2 MS-18NV - E1 MS-18NV - E2 MS-24NV - E1 MS-24NV - E2 MS-18NV - E3 MS-18NV - E3 OUTDOOR UNIT MU-07NV- E1 MU-07NV- E2 MU-09NV - E1 MU-09NV - E2 MU-12NV MU-24NV MU-18NV MU-18NV - E1 E1 E2 MU-18NV MU-12NV MU-24NV - E1 E2 E2 E3 3 OB206t-1.qxp 25/9/97 6:43 PM MS-07NV - E1 MS-18NV - E1 Page 4 MS-09NV - E1 MS-24NV - E1 REMOTE CONTROLLER 4 MS-12NV - E1 MS-18NV - E2 OB206t-1.qxp 25/9/97 6:43 PM MS-07NV MS-12NV MS-07NV MS-12NV MS-24NV - E1 - E1 - E2 - E2 - E2 Page 5 (Product number 7000001T~) (Product number 7000001T~) MS-09NV MS-24NV MS-09NV MS-18NV MS-18NV - E1 - E1 - E2 - E2 - E3 (Product number 7000001T~) (Product number 7000001T~) (Product number 7000001T~) 5 OB206t-1.qxp 3 25/9/97 6:43 PM Page 6 SPECIFICATION Model MS-07NV - Function Dehumidification 2.2 2.5 r/h 0.8 1.1 A Running current A 3.15-3.05 W 680-710 Power factor % Starting current A Compressor motor current A Fan motor current A fan motor 98-97 25 2.69-2.59 3.15-2.99 INDOOR 0.17 OUTDOOR 0.29 3.24-3.10 3.21-3.09 RH-145VGHT 650 700 Winding resistance(at20:) " C-R 4.17 C-S 5.75 Model C-R 4.04 C-S 5.96 RC4V19-AA Winding resistance(at20:) Model " WHT-BLK292.4 BLK-RED324.6 RA6V23-AB " WHT-BLK268.4 BLK-RED390.8 Width mm 815 Height mm 275 Depth mm 183 Width mm 780 Height mm 540 Depth mm 255 Winding resistance(at20:) Outdoor unit Indoor unit kg 8 Outdoor unit kg 32 dB 37 5 Air direction Sound level Indoor unit (Hi) Outdoor unit dB 44-45 Fan speed Indoor unit rpm 1,100 (Hi) Outdoor unit rpm 740-770 Fan speed Indoor unit regulator Outdoor unit 4 1 Refrigerant filling capacity(R-22) kg RT11(at25:) k" 10 RT12(at25:) k" 10 Thermistor NOTE:Test conditions Cooling : Indoor DB27: / WB19: Outdoor DB35: / WB24: 6 98-98 RH-135VGHT Dimensions Special remarks 780-810 — W Indoor unit Weight 3.60-3.45 Output Model Outdoor 10 A(kW) Auxiliary heater Coefficient of performance(C.O.P) fan motor INDOOR 492 OUTDOOR 1620 Power outlet Power input Indoor Cooling kW K /h Air flow Compressor E1 Single phase,220-240V,50Hz Capacity Electrical data MS-09NV - E2 Cooling Power supply Capacity E1 0.65 0.9 OB206t-1.qxp 25/9/97 6:43 PM Page 7 MS-09NV - Model Capacity kW 2.5 3.5 Dehumidification r/h 1.1 1.6 K /h INDOOR 492 OUTDOOR 1620 INDOOR 558 OUTDOOR 2190-2304 10 A Power outlet Running current A 3.60-3.45 Power input W 780-810 % 98-98 96-91 Starting current A 25 35 Compressor motor current A 3.15-2.99 Fan motor current A Model Indoor Outdoor fan motor 5.66-5.81 INDOOR 0.17 OUTDOOR 0.29 INDOOR 0.17 OUTDOOR 0.37 3.21-3.09 2.67-2.52 RH-145VGHT RH-231VHAT Output W 700 Winding resistance(at20:) " C-R 4.04 C-S 5.96 " WHT-BLK292.4 BLK-RED324.6 " RA6V23-AB RA6V40-EC or EE WHT-BLK268.4 BLK-RED390.8 WHT-BLK130.4 BLK-RED134.6 Width mm 815 Height mm 275 Depth mm Winding resistance(at20:) Model Winding resistance(at20:) Dimensions Outdoor unit 183 Width mm 780 Height mm 540 mm 255 Depth Indoor unit kg Outdoor unit kg 850 605 290 8 32 38 5 Air direction Indoor unit dB 37 42 (Hi) Outdoor unit dB 44-45 50 Fan speed 1,230 Sound level Special remarks 1,100 C-R 2.11 C-S 3.97 RC4V19-AA Model Indoor unit Weight 1310-1390 — Power factor Coefficient of performance(C.O.P) fan motor 6.20-6.35 A(kW) Auxiliary heater Compressor Indoor unit rpm 1,100 (Hi) Outdoor unit rpm 740-770 Fan speed Indoor unit regulator Outdoor unit 780-820 4 1 0.65 Refrigerant filling capacity(R-22) kg RT11(at25:) k" 10 RT12(at25:) k" 10 Thermistor E2 Cooling Single phase,220-240V,50Hz Air flow Electrical data E1 Cooling Function Power supply Capacity MS-12NV - E2 0.8 NOTE:Test conditions Cooling : Indoor DB27: / WB19: Outdoor DB35: / WB24: 7 OB206t-1.qxp 25/9/97 6:43 PM Page 8 Model MS-18NV - Function E1 Capacity kW 5.1 6.4 Dehumidification R/h 2.5 3.4 K /h INDOOR 756 OUTDOOR 2190 INDOOR 816 OUTDOOR 2286 A Power outlet A 9.1 12.9-12.6 Power input W 1,910-2,010 2,780-2,900 Outdoor fan motor 95-92 Starting current A 51-55 59 8.46 12.06-11.76 Compressor motor current A Fan motor current A INDOOR 0.25 OUTDOOR 0.39 INDOOR 0.29 OUTDOOR 0.55 2.67-2.54 2.30-2.21 NH-33VMDT NH-47VMDT Output W 1,500 2,200 Winding resistance(at20:) " C-R1.2 C-S 2.7 C-R0.96 C-S 2.07 RA4V27-EA RA4V27-EC Model Winding resistance(at20:) " Model WHT-BLK183.8 BLK-RED250.5 WHT-BLK116.4 BLK-RED111 WHT-BLK81.1 BLK-RED102.2 BLK-YLW 92.2 Width mm 1,015 Height mm 320 Depth mm 190 Width mm 850 Height mm 605 Depth mm 290 Indoor unit kg 14 Outdoor unit kg Dimensions Outdoor unit 5 Sound level Indoor unit dB 42 45 (Hi) Outdoor unit dB 52 53 Fan speed Indoor unit rpm 1,180 1,260 (Hi) Outdoor unit rpm 810-845 860-886 Fan speed Indoor unit regulator Thermistor 4 2 1 Outdoor unit Refrigerant filling capacity(R-22) kg 2.15 1.65 RT11(at25:) k" 10 RT12(at25:) k" 10 NOTE:Test conditions Cooling : Indoor DB27: / WB19: Outdoor DB35: / WB24: 8 61 55 Air direction Special remarks RA6V60-AA or AB RA6V50-OD or OF " Winding resistance(at20:) Indoor unit Weight 98-96 Power factor % Model Indoor — A(kW) Coefficient of performance(C.O.P) fan motor 25 15 Running current Auxiliary heater Compressor E2 Single phase,220-240V,50Hz Air flow Electrical data MS-24NV - E1 Cooling E3 Cooling Power supply Capacity E2 OB206t-1.qxp 25/9/97 6:43 PM 4 Page 9 OUTLINES AND DIMENSIONS MS-07NV - E1 MS-09NV - E1 MS-07NV - E2 MS-09NV - E2 Unit : mm INDOOR UNIT MU-07NV - E1 MU-09NV - E1 MU-07NV - E2 MU-09NV - E2 OUTDOOR UNIT 9 OB206t-1.qxp 25/9/97 6:43 PM Page 10 MS-12NV - E1 MS-12NV - E2 Unit : mm INDOOR UNIT { s side t/left only h g i as rr nt o e top h ted. h c e fro If th acant, t nobstru v are 10cm u e to b MU-12NV - E1 MU-12NV - E2 OUTDOOR UNIT If the right/left sides or back side is vacant,the front has only to be 50cm unobstructed. 12.7 10 Page 11 Unit : mm 4holes 11 11✕20 MS-18NV - E3 150 648 217 60 40 995 Indoor unit 20 MS-18NV - E1 MS-24NV - E1 E2 MS-18NV MS-24NV - E2 INDOOR UNIT 450 3 450 297 25/9/97 6:43 PM 254 OB206t-1.qxp 438 352 Wall hole [75 Installation plate 1015 190 5 320 Installation plate { Air in 50 775 17.5 Air out Drain hose [16 Insulation [28 Power supply cord Lead to right 2m Lead to left 1m 160 56 190 Liquid line [8-0.5m Gas line [12-0.43m Insulation [50 O.D [28 [ 28 I.D s side t/left only h g i as rr nt o e top h ted. h c e fro If th acant, t nobstru v u e r m a c e 10 to b Wireless remote controller MU-18NV - E1 MU-24NV - E1 MU-18NV - E2 MU-24NV - E2 OUTDOOR UNIT MU-18NV - E3 If the right/left sides or back side is vacant,the front has only to be 50cm unobstructed. 11 OB206t-1.qxp 5 25/9/97 6:43 PM Page 12 WIRING DIAGRAM MS-07NV - E1 MS-09NV - E1 MODELS WIRING DIAGRAM INDOOR UNIT ❈ ❈ ❈ ❈ ❈ NAME SYMBOL NAME SYMBOL C11 INDOOR FAN CAPACITOR NR11 VARISTOR F12 FUSE(93:) RT11 F11 FUSE(3.15A) RT12 MF INDOOR FAN MOTOR HIC1 DC/DC CONVERTER NAME SYMBOL TB TERMINAL BLOCK ROOM TEMPERATURE THERMISTOR MV VANE MOTOR INDOOR COIL THERMISTOR SR11 52C SOLID STATE RELAY CONTACTOR NOTE:1. For the outdoor electric wiring refer to the outdoor unit electric wiring diagram for servicing. 2. Use copper conductors only.(For field wiring) 3. Symbols below indicate. : Terminal block, : Connector MU-07NV - E1 MU-09NV - E1 MODELS WIRING DIAGRAM OUTDOOR UNIT ❈ ❈ SYMBOL NAME SYMBOL NAME C1 COMPRESSOR CAPACITOR MF OUTDOOR FAN MOTOR C2 OUTDOOR FAN CAPACITOR MC COMPRESSOR (INNER THERMOSTAT) NOTE:1. Use copper conductors only.(For field wiring) 2. “❈”show the terminals with a lock mechanism, so they cannot be removed when you pull the lead wire. Be sure to pull the wire by pushing the locking lever(projected part) of the terminal with a finger. 3. Symbols below indicate. : Terminal block, : Connector 12 NAME SYMBOL TB F TERMINAL BLOCK FUSE (2A) 1.Slide the sleeve. 2.Pull the wire while pushing the locking lever. OB206t-1.qxp 25/9/97 6:43 PM Page 13 MS-12NV - E1 MODEL WIRING DIAGRAM INDOOR UNIT ❈ ❈ ❈ ❈ ❈ NAME SYMBOL NAME SYMBOL C11 INDOOR FAN CAPACITOR NR11 VARISTOR F12 FUSE(93:) RT11 F11 FUSE(3.15A) RT12 MF INDOOR FAN MOTOR HIC1 DC/DC CONVERTER NAME SYMBOL TB TERMINAL BLOCK ROOM TEMPERATURE THERMISTOR MV VANE MOTOR INDOOR COIL THERMISTOR SR11 52C SOLID STATE RELAY CONTACTOR NOTE:1. For the outdoor electric wiring refer to the outdoor unit electric wiring diagram for servicing. 2. Use copper conductors only.(For field wiring) 3. Symbols below indicate. : Terminal block, : Connector MU-12NV - E1 MODEL WIRING DIAGRAM OUTDOOR UNIT ❈ ❈ SYMBOL NAME SYMBOL NAME C1 COMPRESSOR CAPACITOR MF OUTDOOR FAN MOTOR C2 OUTDOOR FAN CAPACITOR MC COMPRESSOR (INNER THERMOSTAT) NOTE:1. Use copper conductors only.(For field wiring) 2. “❈”show the terminals with a lock mechanism, so they cannot be removed when you pull the lead wire. Be sure to pull the wire by pushing the locking lever(projected part) of the terminal with a finger. 3. Symbols below indicate. : Terminal block, : Connector NAME SYMBOL TB F TERMINAL BLOCK FUSE(2A) 1.Slide the sleeve. 2.Pull the wire while pushing the locking lever. 13 OB206t-1.qxp 25/9/97 6:43 PM MS-18NV - E1 INDOOR UNIT L Page 14 MODEL WIRING DIAGRAM TB ❈ BRN BRN IC141 ❈ N ❈ ❈ 4 BLK 2 BLK 1 WHT BLK BLK BLU ❈ 3 52C CN201 3 1 F11 DSAR GRN/YLW BRN POWER SUPPLY CORD 1~ 220-240V 50Hz CN 121 C11 ❈ NR11 F12 2 TO OUTDOOR UNIT CONNECTING LD1 CN 101 CN 151 CN 102 CN 112 ELECTRONIC CONTROL P.C BOARD RT12 3 CN211 4 2 1 CN 111 BRN YLW GRY WHT MF RED BLK RT11 5 3 3 MV RECEIVER DISPLAY P.C.BOARD P.C.BOARD GRN/YLW REMOTE CONTROLLER NAME SYMBOL NAME SYMBOL VARISTOR FUSE(93:) RT11 ROOM TEMPERATURE THERMISTOR FUSE(3.15A) RT12 INDOOR COIL THERMISTOR MF INDOOR FAN MOTOR IC141 HYBRID IC MV VANE MOTOR INDOOR FAN CAPACITOR F12 F11 52C NAME SYMBOL NR11 C11 TB TERMINAL BLOCK DSAR SURGE ABSORBER CONTACTOR NOTE:1. For the outdoor electric wiring refer to the outdoor unit electric wiring diagram for servicing. 2. Use copper conductors only.(For field wiring) 3. Symbols below indicate. : Terminal block, : Connector MODEL WIRING DIAGRAM MU-18NV - E1 OUTDOOR UNIT TB GRN / YLW TO INDOOR UNIT CONNECTING 2 ❈ WHT C N C1 BLK ❈ MC RED BLK BLK WHT ORN C2 SYMBOL NAME SYMBOL 4 3 2 RED 1 NAME C1 COMPRESSOR CAPACITOR MF OUTDOOR FAN MOTOR C2 OUTDOOR FAN CAPACITOR MC COMPRESSOR (INNER THERMOSTAT) NOTE:1. Use copper conductors only.(For field wiring) 2. “❈”show the terminals with a lock mechanism, so they cannot be removed when you pull the lead wire. Be sure to pull the wire by pushing the locking lever(projected part) of the terminal with a finger. 3. Symbols below indicate. : Terminal block, : Connector 14 R S BLK WHT ORN MF RED NAME SYMBOL TB F TERMINAL BLOCK FUSE (2A) 1.Slide the sleeve. 2.Pull the wire while pushing the locking lever. 25/9/97 6:43 PM Page 15 MS-24NV - E1 INDOOR UNIT MODEL WIRING DIAGRAM 220-240V~ 2 ❈ RED HIC1 WHT F12 N ❈ ❈ BLU 2 BLU BRN TO OUTDOOR UNIT CONNECTING 4 1 ❈ 3 52C CN201 F11 BLU WHT LD1 DSAR CIRCUIT BREAKER GRN/YLW WHT 1 POWER SUPPLY CORD ~/N 220-240V 50Hz CN 151 CN 102 CN 101 CN 112 RT12 3 CN 121 TRANS 3 1 BLU BLU IC141 NR11 220-240V~ TB ❈ 3 C11 OB206t-1.qxp BRN YLW GRY WHT RED BLK CN211 4 2 1 ELECTRONIC CONTROL P.C BOARD CN 111 MF RT11 5 3 3 MV RECEIVER DISPLAY P.C.BOARD P.C.BOARD GRN/YLW REMOTE CONTROLLER NAME SYMBOL SYMBOL NAME SYMBOL NAME C11 INDOOR FAN CAPACITOR NR11 VARISTOR TB TERMINAL BLOCK F12 FUSE(93¡C) RT11 ROOM TEMPERATURE THERMISTOR DSAR SURGE ABSORBER F11 FUSE(3.15A) RT12 INDOOR COIL THERMISTOR HIC1 DC / DC CONVERTER MF INDOOR FAN MOTOR IC141 HYBRID IC MV VANE MOTOR CONTACTOR 52C NOTE:1. For the outdoor electric wiring refer to the outdoor unit electric wiring diagram for servicing. 2. Use copper conductors only.(For field wiring) 3. Symbols below indicate. : Terminal block, : Connector MODEL WIRING DIAGRAM MU-24NV - E1 OUTDOOR UNIT TB WHT 2 52C 1 WHT ❈ RED ORN WHT BLK YLW C2 BLU 8 X1 BLU 6 3 5 BLU X1 1 ❈ 26F1 N TO INDOOR UNIT CONNECTING RED 7 b 1 2 3 4 5 6 RED ORN WHT BLK YLW R RED RED RED a RED RED ❈ TB2 RED 1 S GRY 220-240V F C MC 52C 3 MF BLK 220-240V 2 CR GRN/YLW C1 BLU SYMBOL NAME SYMBOL NAME NAME SYMBOL C1 COMPRESSOR CAPACITOR MF OUTDOOR FAN MOTOR TB TERMINAL BLOCK C2 OUTDOOR FAN CAPACITOR MC COMPRESSOR (INNER THERMOSTAT) CR SURGE ABSORBER X1 FAN MOTOR RELAY 52C COMPRESSOR CONTACTOR NOTE:1. Use copper conductors only.(For field wiring) 2. “❈”show the terminals with a lock mechanism, so they cannot be removed when you pull the lead wire. Be sure to pull the wire by pushing the locking lever(projected part) of the terminal with a finger. 3. Symbols below indicate. : Terminal block, : Connector F FUSE(2A) 1.Slide the sleeve. 2.Pull the wire while pushing the locking lever. 15 OB206t-1.qxp 25/9/97 6:44 PM Page 16 MS-07NV - E2 MS-09NV - E2 MS-12NV - E2 INDOOR UNIT MODELS WIRING DIAGRAM TB L ❈ BRN BRN TO OUTDOOR UNIT CONNECTING 220-240V~ 2 ❈ WHT N ❈ SR11 HIC1 F12 BLU BLU CN201 1 ❈4 NR11 52C 1 GRN/YLW GRN/YLW CN LD101 151 GUARD PLATE C11 F11 CN 122 RT12 CN 111 TRANS CN 121 RT11 BLK GRY YLW BRN WHT RED 3 3 2 1 CN211 1 2 3 MF 4 5 6 ELECTRONIC CONTROL P.C BOARD 5 5 POWER MONITOR, RECEIVER P.C.BOARD CIRCUIT BREAKER MV REMOTE CONTROLLER NAME SYMBOL 1 2 ❈ 3 BLU BLU POWER SUPPLY CORD ~/N 220-240V 50Hz BLU CN 112 NAME SYMBOL NAME SYMBOL C11 INDOOR FAN CAPACITOR NR11 VARISTOR F12 FUSE(93:) RT11 F11 FUSE(3.15A) RT12 MF INDOOR FAN MOTOR HIC1 DC/DC CONVERTER TB TERMINAL BLOCK ROOM TEMPERATURE THERMISTOR MV VANE MOTOR INDOOR COIL THERMISTOR SR11 52C SOLID STATE RELAY CONTACTOR NOTE:1. For the outdoor electric wiring refer to the outdoor unit electric wiring diagram for servicing. 2. Use copper conductors only.(For field wiring) 3. Symbols below indicate. : Terminal block, : Connector MU-07NV - E2 MU-09NV - E2 OUTDOOR UNIT MODELS WIRING DIAGRAM TB 220-240V~ 2 ❈ WHT C WHT TO INDOOR UNIT CONNECTING N ❈ F C2 WHT BLU RED NAME SYMBOL 1 MC 2 3 R WHT BLK BLK MF RED NAME C1 COMPRESSOR CAPACITOR MF OUTDOOR FAN MOTOR C2 OUTDOOR FAN CAPACITOR MC COMPRESSOR (INNER THERMOSTAT) NOTE:1. Use copper conductors only.(For field wiring) 2. “❈”show the terminals with a lock mechanism, so they cannot be removed when you pull the lead wire. Be sure to pull the wire by pushing the locking lever(projected part) of the terminal with a finger. 3. Symbols below indicate. : Terminal block, : Connector 16 RED S BLU GRN/YLW SYMBOL C1 BLU NAME SYMBOL TB F TERMINAL BLOCK FUSE (2A) 1.Slide the sleeve. 2.Pull the wire while pushing the locking lever. OB206t-1.qxp 25/9/97 6:44 PM Page 17 MS-18NV - E2 MODEL WIRING DIAGRAM INDOOR UNIT ❈ ❈ ~ ❈ ❈ ❈ NAME SYMBOL SYMBOL NAME SYMBOL NAME C11 INDOOR FAN CAPACITOR NR11 VARISTOR TB TERMINAL BLOCK F12 FUSE(93¡C) RT11 ROOM TEMPERATURE THERMISTOR DSAR SURGE ABSORBER F11 FUSE(3.15A) RT12 INDOOR COIL THERMISTOR HIC1 DC / DC CONVERTER MF INDOOR FAN MOTOR IC141 HYBRID IC MV VANE MOTOR 52C CONTACTOR NOTE:1. For the outdoor electric wiring refer to the outdoor unit electric wiring diagram for servicing. 2. Use copper conductors only.(For field wiring) 3. Symbols below indicate. : Terminal block, : Connector MODEL WIRING DIAGRAM MU-18NV - E2 OUTDOOR UNIT ❈ ❈ SYMBOL NAME SYMBOL NAME C1 COMPRESSOR CAPACITOR MF OUTDOOR FAN MOTOR C2 OUTDOOR FAN CAPACITOR MC COMPRESSOR (INNER THERMOSTAT) NOTE:1. Use copper conductors only.(For field wiring) 2. “❈”show the terminals with a lock mechanism, so they cannot be removed when you pull the lead wire. Be sure to pull the wire by pushing the locking lever(projected part) of the terminal with a finger. 3. Symbols below indicate. : Terminal block, : Connector NAME SYMBOL TB F TERMINAL BLOCK FUSE(2A) 1.Slide the sleeve. 2.Pull the wire while pushing the locking lever. 17 OB206t-1.qxp 25/9/97 6:44 PM MS-24NV - E2 Page 18 MODEL WIRING DIAGRAM INDOOR UNIT HIC1 TO OUTDOOR UNIT CONNECTING N ❈ BLU BLU ❈ 4 2 1 BLU BLU BLU WHT 1 DSAR POWER SUPPLY CORD ~/N 220-240V 50Hz WHT LD1 CN 151 CN 102 CN 101 52C ❈3 CN 121 TRANS RT12 3 CN211 F11 4 2 1 ELECTRONIC CONTROL P.C BOARD CN 111 BRN YLW GRY WHT RED BLK MF RT11 5 3 3 MV DISPLAY P.C.BOARD RECEIVER P.C.BOARD CIRCUIT BREAKER GRN/YLW CN201 3 1 CN 112 IC141 NR11 ❈ WHT F12 BRN GRN/YLW 220-240V~ 2 RED C11 TB 220-240V~ 3 ` ❈ REMOTE CONTROLLER NAME SYMBOL SYMBOL NAME SYMBOL NAME C11 INDOOR FAN CAPACITOR NR11 VARISTOR TB TERMINAL BLOCK F12 FUSE(93¡C) RT11 ROOM TEMPERATURE THERMISTOR DSAR SURGE ABSORBER F11 FUSE(3.15A) RT12 INDOOR COIL THERMISTOR HIC1 DC / DC CONVERTER MF INDOOR FAN MOTOR IC141 HYBRID IC MV VANE MOTOR CONTACTOR 52C NOTE:1. For the outdoor electric wiring refer to the outdoor unit electric wiring diagram for servicing. 2. Use copper conductors only.(For field wiring) 3. Symbols below indicate. : Terminal block, : Connector MU-24NV - E2 MODEL WIRING DIAGRAM TB OUTDOOR UNIT 52C 2 WHT 2 WHT 1 ❈ RED ORN WHT BLK YLW C2 8 BLU N X1 RED 7 6 BLU ❈ 3 5 X1 1 A2/b 26F1 TO INDOOR UNIT CONNECTING BLU RED RED TB2 A1/a RED 1 RED SYMBOL R CR C1 GRN/YLW NAME C MC RED RED F MF S GRY 3 ❈ BLU NAME NAME SYMBOL MF OUTDOOR FAN MOTOR TB TERMINAL BLOCK MC COMPRESSOR (INNER THERMOSTAT) CR SURGE ABSORBER X1 FAN MOTOR RELAY 52C COMPRESSOR CONTACTOR TB2 TERMINAL BLOCK 26F1 THERMAL READ SWITCH C1 COMPRESSOR CAPACITOR C2 OUTDOOR FAN CAPACITOR NOTE:1. Use copper conductors only.(For field wiring) 2. “❈”show the terminals with a lock mechanism, so they cannot be removed when you pull the lead wire. Be sure to pull the wire by pushing the locking lever(projected part) of the terminal with a finger. 3. Symbols below indicate. : Terminal block, : Connector 18 RED ORN WHT BLK YLW 52C 220-240 ~ SYMBOL 1 2 3 4 5 6 BLK 220-240 ~ F FUSE(2A) 1.Slide the sleeve. 2.Pull the wire while pushing the locking lever. OB206t-1.qxp 25/9/97 6:44 PM Page 19 MS-18NV - E3 MODEL WIRING DIAGRAM INDOOR UNIT TB BRN ❈ BRN ❈ N F12 ❈ WHT ❈ ❈ 4 BLU 2 BLU CN201 3 1 1 BLU BLU ❈3 DSAR POWER SUPPLY CORD ~/N 220-240V 50Hz CIRCUITBREAKER CN 151 BRN YLW GRY WHT MF RED BLK 4 2 1 LD1 CN 102 3 CN211 F11 CN 101 RT12 CN 121 TRANS BRN BLU 52C C11 2 CN 112 IC141 NR11 220-240V~ HIC1 GRN/YLW L TO OUTDOOR UNIT CONNECTING ELECTRONIC CONTROL P.C BOARD CN 111 RT11 5 3 3 MV RECEIVER DISPLAY P.C.BOARD P.C.BOARD GRN/YLW REMOTE CONTROLLER NAME SYMBOL NAME SYMBOL C11 INDOOR FAN CAPACITOR NR11 VARISTOR F12 FUSE(93¡C) RT11 F11 FUSE(3.15A) RT12 MF INDOOR FAN MOTOR IC141 HYBRID IC MV VANE MOTOR 52C NAME SYMBOL TB TERMINAL BLOCK ROOM TEMPERATURE THERMISTOR DSAR SURGE ABSORBER INDOOR COIL THERMISTOR HIC1 DC / DC CONVERTER CONTACTOR NOTE:1. For the outdoor electric wiring refer to the outdoor unit electric wiring diagram for servicing. 2. Use copper conductors only.(For field wiring) 3. Symbols below indicate. : Terminal block, : Connector MU-12NV - E2 MU-18NV - E3 OUTDOOR UNIT MODELS WIRING DIAGRAM TB 220-240V~ 2 ❈ WHT C WHT TO INDOOR UNIT CONNECTING N ❈ C1 BLU RED S MC R F BLK GRN/YLW C2 RED RED 1 ORN 2 WHT WHT 3 BLU BLK 4 ORN SYMBOL NAME SYMBOL NAME C1 COMPRESSOR CAPACITOR MF OUTDOOR FAN MOTOR C2 OUTDOOR FAN CAPACITOR MC COMPRESSOR (INNER THERMOSTAT) NOTE:1. Use copper conductors only.(For field wiring) 2. “❈”show the terminals with a lock mechanism, so they cannot be removed when you pull the lead wire. Be sure to pull the wire by pushing the locking lever(projected part) of the terminal with a finger. 3. Symbols below indicate. : Terminal block, : Connector MF NAME SYMBOL TB F TERMINAL BLOCK FUSE(2A) 1.Slide the sleeve. 2.Pull the wire while pushing the locking lever. 19 OB206t-1.qxp 6 25/9/97 6:44 PM Page 20 REFRIGERANT SYSTEM DIAGRAM Unit:mm MS-07NV - E1 MS-07NV - E2 MS-09NV - E1 MS-09NV - E2 MU-07NV - E1 MU-07NV - E2 Refrigerant pipe [9.52 (Option) (with heat insulator) Stop valve (with service port) INDOOR UNIT Indoor heat exchanger Indoor coil thermistor RT12 MU-09NV - E1 MU-09NV - E2 OUTDOOR UNIT Outdoor heat exchanger Flared connection Accumulator Room temperature thermistor RT11 Compressor Capillary tube [1.6x1200 Strainer Refrigerant pipe [6.35 (Option) (with heat insulator) MS-12NV - E1 Indoor heat exchanger Refrigerant pipe [12.7 (Optional) (with heat insulator) Indoor coil thermistor RT12 Room temperature thermistor RT11 Flared connection MU-12NV - E2 OUTDOOR UNIT Stop valve (with service port) Outdoor heat exchanger Compressor Stop valve Refrigerant pipe [6.35 (Option) (with heat insulator) 20 Unit:mm MU-12NV - E1 MS-12NV - E2 INDOOR UNIT Refrigerant flow in cooling Capillary tube [1.8x800 Strainer Refrigerant flow in cooling OB206t-1.qxp 25/9/97 6:44 PM Page 21 Unit:mm MS-18NV - E1 MS-18NV - E3 MS-18NV - E2 INDOOR UNIT MU-18NV - E2 OUTDOOR UNIT Refrigerant pipe [15.88 (Option) (with heat insulator) Indoor coil thermistor RT12 Indoor heat exchanger MU-18NV - E1 MU-18NV - E3 Accumulator Stop valve (with service port) Strainer Distributor Flared connection Room temperature thermistor RT11 Outdoor heat exchanger Compressor Capillary tube [2.0X700 Stop valve Refrigerant pipe [6.35 (Option) (with heat insulator) Refrigerant flow in cooling Unit:mm MS-24NV - E1 INDOOR UNIT Indoor heat exchanger MU-24NV - E1 MS-24NV - E2 Refrigerant pipe [15.88 (Option) (with heat insulator) Indoor coil thermistor RT12 Distributor Room temperature thermistor RT11 MU-24NV - E2 OUTDOOR UNIT Accumulator Stop valve (with service port) Outdoor heat exchanger Flared connection Compressor Stop valve Capillary tube [1.6X350 Discharge Pressure Regulator Capillary tube [2.0X700 Strainer Refrigerant pipe [9.52 (Option) (with heat insulator) Refrigerant flow in cooling 21 OB206t-1.qxp 25/9/97 6:44 PM Page 22 MAX. REFRIGERANT PIPING LENGTH Refrigerant piping Max. length : m Model MS-07NV MS-07NV MS-09NV MS-09NV MS-12NV MS-12NV MS-18NV MS-18NV MS-18NV - E1 MS-24NV MS-24NV - E1 E2 Piping size O.D : mm A Gas 10 9.52 Length of connecting pipe : m Liquid E1 Indoor unit Outdoor unit 0.43 0 6.35 E2 E1 12.7 E2 E1 15 E2 15.88 E3 9.52 E2 MAX. HEIGHT DIFFERENCE ADDITIONAL REFRIGERANT CHARGE(R-22 : g) Outdoor unit precharged (up to 7m) Model MS-07NV MS-07NV MS-09NV MS-09NV MS-12NV MS-12NV MS-18NV MS-18NV MS-18NV MS-24NV MS-24NV - E1 10m 15m 0 45 120 650 E2 E1 E2 E1 900 850 800 E2 E1 E2 1650 E3 E1 E2 Calculation : Xg=15g/m✕(A-7)m 22 Refrigerant piping length (one way) 7m 2150 OB206t-1.qxp 25/9/97 6:44 PM Page 23 EVACUATION PROCEDURES(AIR PURGE) Connect the refrigerant pipes (both the liquid and gas pipes) between the indoor and the outdoor units. Remove the service port cap of the stop valve on the side of the outdoor unit gas pipe (The stop valve will not work in its initial state fresh out of the factory (totally closed with cap on)). When vacuuming Connect the gage manifold valve and the vacuum pump to the service port of the stop valve on the liquid pipe side of the outdoor unit. Run the vacuum pump for more than 15 minutes and at this time confirm that the pressure gage indicates 0.1 Mpa. Check the vacuum with the gage manifold valve, then close the gage manifold valve, and stop the vacuum pump. Leave it as is for one or two minutes. Make sure the pointer of the gage manifold valve remains in the same position. Remove the gage manifold valve quickly from the service port of the stop valve. After refrigerant pipes are connected and evacuated, fully open all stop valves on gas and liquid pipe sides Operating without fully opening lowers the performance and causes trouble. Pipe length : 7m maximum No gas charge is needed. Pipe length exceeding 7m Charge the prescribed amount of gas. Tighten the cap to the service port to obtain the initial status. Retighten the cap. Leak test 23 OB206t-1.qxp 7 25/9/97 6:44 PM Page 24 PERFORMANCE CURVES The standard data contained in these 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 Rated voltage : ±10% (198 ~ 264V),50Hz (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 :°CWB :°CWB :°CDB :W } Cooling Indoor air wet-bulb temperature difference on the left side of the chart on next page shows the difference between the indoor intake air wet-bulb temperature and the indoor outlet air wet-bulb temperature for your reference at service. How to measure the indoor air wet-bulb temperature difference 1. 2. 3. 4. 5. 6. 7. 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 dry-bulb thermometers to the outdoor air inlet. 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 to start the EMERGENCY operation. 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 24 OUTDOOR UNIT 25/9/97 6:44 PM Page 25 E3 OB206t-1.qxp OUTDOOR LOW PRESSURE AND OUTDOOR UNIT CURRENT COOL operation ① Both indoor and outdoor unit are under the same temperature/humidity condition. Dry-bulb temperature Relative humidity(%) 20 50 25 60 30 70 ➁ Air flow should be set at MAX. (kgf/F•G)(MPa•G) MU-07NV - E1 E2 (kgf/F•G)(MPa•G) E2 8 7 6 220/240V 5 4 Outdoor low pressure 8 7 6 220/240V 5 4 3 3 Ambient temperature(˚C)Ambient humidity(%) Ambient temperature(˚C)Ambient humidity(%) MU-09NV - E1 E2 220V 240V Ambient temperature(˚C)Ambient humidity(%) Outdoor unit current(A) MU-07NV - E1 Outdoor unit current(A) Outdoor low pressure MU-09NV - E1 E2 220V 240V Ambient temperature(˚C)Ambient humidity(%) 25 25/9/97 6:44 PM MU-12NV - E1 E2 7 7 6 6 5 220/240V 4 3 Ambient temperature(˚C)Ambient humidity(%) Outdoor unit current(A) MU-12NV - E1 220V 240V MU-24NV - E1 E2 8 Outdoor low pressure 7 6 5 220/240V 4 3 Ambient temperature(˚C)Ambient humidity(%) MU-24NV - E1 Outdoor unit current(A) E2 E3 220/240V 5 4 3 Ambient temperature(˚C)Ambient humidity(%) MU-18NV - E1 E2 Ambient temperature(˚C)Ambient humidity(%) (kgf/F•G)(MPa•G) MU-18NV - E1 2 2 E2 220V 240V Ambient temperature(˚C)Ambient humidity(%) 26 (kgf/F•G)(MPa•G) Outdoor unit current(A) Outdoor low pressure (kgf/F•G)(MPa•G) Page 26 Outdoor low pressure OB206t-1.qxp E2 E3 220/240V Ambient temperature(˚C)Ambient humidity(%) OB206t-1.qxp 25/9/97 6:44 PM 8 Page 27 MICROPROCESSOR CONTROL Wireless remote controller MS-07NV MS-18NV MS-09NV MS-24NV - E1 - E1 - E2 - E2 MS-09NV MS-24NV MS-12NV MS-18NV - E1 - E1 - E2 - E3 MS-12NV - E1 MS-07NV - E2 MS-18NV - E2 Once the controls are set, the same operation mode can be repeated by simply turning the OPERATE/STOP button ON. Indoor unit receives the signal with a beep tone. When the system turns off, 3-minute time delay will operate to protect system from overload and compressor will not restart for 3 minutes. 1. “I FEEL CONTROL” ( ) OPERATION (1) Press OPERATE/STOP button on the remote controller. OPERATION INDICATOR LAMP of the indoor unit will turn on with a beep tone. (2) Press OPERATION SELECT button to set “I FEEL CONTROL”( ) .Then a beep tone is heard. (3) The operation mode is determined by the initial room temperature at start-up of the operation. Initial room temperature more than 25: . 13: to 25: mode COOL mode of “I FEEL CONTROL“ DRY mode of “I FEEL CONTROL” ● Once the mode is fixed, the mode will not change by room temperature afterwards. ● Under the ON-TIMER ( ) operation, the mode is determined according to the room temperature as the operation starts. ● When the system is stopped with the OPERATE/STOP button on the remote controller, and restarted within 2 hours in “I FEEL CONTROL” ( ) mode, the system operates in previous mode automatically regardless of the room temperature. Example Previous operation COOL mode of “I FEEL CONTROL” or COOL mode Restart COOL mode of “I FEEL CONTROL” ● When the system is restarted after 2 hours, the operation mode is determined by the initial room temperature at start-up of the operation. Example INDOOR UNIT DISPLAY SECTION Previous operation COOL mode of “I FEEL CONTROL” or COOL mode Restart COOL or DRY mode of “I FEEL CONTROL” that determined by initial room temperature at start-up of the operation. 27 OB206t-1.qxp 25/9/97 6:44 PM Page 28 (4) The initial set temperature is decided by the initial room temperature. Model Initial room temperature COOL mode of "I FEEL CONTROL" 26: or more 24: ❈1 26: or less DRY mode of "I FEEL CONTROL" Initial set temperature 13: or 25: Initial room temperature minus 2: Initial room temperature minus 2: ❈1 After the system restarts by the remote controller, the system operates with the previous set temperature regardless of the initial set temperature. The set temperature is calculated by the previous set temperature. (5) TEMPERATURES buttons In “I FEEL CONTROL” ( ) mode, set temperature is decided by the microprocessor based on the room temperature. In addition, set temperature is controlled by TOO WARM or TOO COOL buttons when you feel too cool or too warm. Each time the TOO WARM or TOO COOL button is pressed, the indoor unit receives the signal and emits a beep tone. ● Fuzzy control When the TOO COOL or TOO WARM button is pressed, the microprocessor changes the set temperature, considering the room temperature, the frequency of pressing TOO COOL or TOO WARM button and the user’s preference to heat or cool. So this is called “Fuzzy control”, and works only in “I FEEL CONTROL” mode. In DRY mode of “I FEEL CONTROL”, the set temperature doesn’t change. ▲ TOO COOL … To raise the set temperature 1~2 degrees(°C) ▼ TOO WARM … To lower the set temperature 1~2 degrees(°C) 28 OB206t-2.qxp 25/9/97 8:35 PM Page 29 — COOL mode of “I FEEL CONTROL” — ON ON Compressor and outdoor fan motor OFF Indoor fan motor ON OFF Run continuously in cooling mode NOTE : Coil frost prevention during COOL mode of “I FEEL CONTROL” There are two types of controls in coil frost prevention. ① Temperature control <MS-/0709/12> When the indoor coil thermistor RT12 reads 4°C or below for 5 minutes, the coil frost prevention mode starts. <MS-18/24> When the indoor coil thermistor RT12 reads -1°C or below, the coil frost prevention mode starts immediately. However, the coil frost prevention only works after 5 minutes from the compressor starts. The compressor stops and the indoor fan operates at the set speed for 5 minutes. After that, if RT12still reads below 4°C (MS-07/09/12) or below -1°C (MS-18/24) this mode prolonged until the RT12 reads over 4°C (MS-07/09/12) or -1°C (MS-18/24). ② Time control When the three conditions below have been satisfied for 1 hour and 45 minutes, compressor stops for 3 minutes. a. Compressor has been continuously operating. b. Indoor fan speed is Lo or Me. c. Room temperature is below 26°C. When compressor stops, the accumulated time is cancelled and when compressor restarts, time counting starts from the beginning. Time counting also stops temporarily when the indoor fan speed becomes Hi or the room temperature exceeds 26°C. However, when two of the above conditions (b.and c.) are satisfied again.Time accumulation is resumed. ● Indoor fan operates at the set speed by FAN SPEED CONTROL button. Followings are the fan speed in AUTO. Fan speed Initial temperature difference Room temperature minus set temperature : 2 degrees or more············································Hi Room temperature minus set temperature : 1 degree or more and less than 2 degrees·····Me 2 deg. 4 deg. Room temperature minus set temperature : less than 1 degree···········································Lo 1 deg. 1.66 deg. —DRY mode of “I FEEL CONTROL”— The system for dry operation uses the same refrigerant circuit as the cooling circuit. The compressor and the indoor fan are controlled by the temperature and the microprocessor. By such controls, indoor flow amounts will be reduced in order to lower humidity without much room temperature decrease. The operation of the compressor and indoor fan is as follows. 1. When the room temperature is 23°C or over: Compressor operates by temperature control and time control. ① Set temperature is controlled to fall 2°C as initial set temperature. ② When the thermostat is ON, the compressor repeats 8 minutes ON and 3 minutes OFF. When the thermostat is OFF, the compressor repeats 4 minutes OFF and 1 minute ON. Indoor fan and outdoor fan operate in the same cycle as the compressor. 2. When the room temperature is under 23°C. When the thermostat is ON, the compressor repeats 2 minutes ON and 3 minutes OFF. When the thermostat is OFF, the compressor repeats 4 minutes OFF and 1 minute ON. 29 OB206t-2.qxp 25/9/97 8:35 PM Page 30 Operation time chart Example ON 1st ON OFF Thermostat Indoor fan OFF ON Outdoor fan compressor OFF ON OFF 8 min. ON ON ON ON OFF 3 min. 1 min. NOTE ● Coil frost prevention during DRY mode of “I FEEL CONTROL” The operation is same as coil frost prevention during COOL mode of “I FEEL CONTROL” excepting the indoor fan is OFF. ● During coil frost prevention the outdoor fan speed becomes Lo and the indoor fan is OFF. (Because the coil frost prevention is priority.) 2. COOL ( ) OPERATION (1) Press OPERATE/STOP button. OPERATION INDICATOR of the indoor unit turns on with a beep tone. (2) Select COOL mode. (3) Set the TEMPERATURES button. (TOO WARM or TOO COOL button) The setting range is 16 ~ 31°C ✻ Indoor fan continues to operate regardless of thermostat’s OFF-ON ✻ Coil frost prevention is as same as COOL mode of “I FEEL CONTROL” 3. DRY ( ) OPERATION (1) Press OPERATE/STOP button. OPERATION INDICATOR of the indoor unit turns on with a beep tone. (2) Select DRY mode. (3) The microprocessor reads the room temperature and determines the set temperature. Set temperature is as shown on the right chart. Thermostat (SET TEMP.)does not work. The other operations are same as DRY mode of “I FEEL CONTROL”. (4) DRY operation will not function when the room temperature is 13°C or below. (5) When DRY operation functions, the fan speed is lower than cool operation. 30 OB206t-2.qxp 25/9/97 8:35 PM Page 31 4.FAN( d )OPERATION (1)Press POWER ON/OFF button. (2)Select FAN mode with the OPERATION SELECT button. (3)Select the desired fan speed.When AUTO,it becomes Lo. Only indoor fan operates.Outdoor unit does not operate. 5. FAN MOTOR CONTROL (1) Rotational frequency feedback control The indoor fan motor is equipped with a rotational frequency sensor, and outputs signal to the microprocessor to feedback the rotational frequency. Comparing the current rotational frequency with the target rotational frequency (Hi,Me,Lo,SLEEP), the microprocessor controls SR11 (MS-07/09/12), IC141 (MS-18/24) and adjusts fan motor electric current to make the current rotational frequency close to the target rotational frequency. With this control, when the fan speed is switched, the rotational frequency changes smoothly. SLEEP (2) Fan motor lock-up protection When the rotational frequency feedback signal has not output for 12 seconds, (or when the microprocessor cannot detect the signal for 12 seconds) the fan motor is regarded locked-up. Then the electric current to the fan motor is shut off. 3 minutes later, the electric current is applied to the fan motor again. During the fan motor lock-up, the OPERATION INDICATOR lamp flashes on and off to show the fan motor abnormality. (See page 38.) 6. AUTO VANE OPERATION (1) Vane motor drive MS(D)-N series is equipped with a stepping motor for the vane. The rotating direction, speed, and angle of the motor are controlled by pulse signals (approx. 12V) transmitted from indoor microprocessor. (2) The auto vane angle changes as follows by pressing the VANE CONTROL ( ) button. 31 OB206t-2.qxp 25/9/97 8:35 PM Page 32 (3) Positioning The vane is once pressed to the vane stopper below to confirm the standard position and then set to the desired angle. The positioning is decided as follows. (a) When the OPERATE/STOP button is pressed. (POWER ON/OFF) (b) When the vane control is changed from AUTO to MANUAL. (c) When the SWING is finished. (d) When the test run starts. (e) When the power supply turns ON. (4) VANE AUTO ( ) mode In VANE AUTO mode, the microprocessor automatically determines the vane angle and operation to make the optimum room-temperature distribution. ① In COOL and DRY operation Vane angle is fixed to Angle 1. ➁ In FAN operation Vane angle is fixed to Angle 4. (5) Dew prevention During COOL or DRY operation at Vane Angle 4 or 5 when the compressor cumulative operation time exceeds 1 hour, the vane angle automatically changes to Angle 1 for dew prevention. (6) SWING MODE ( ) By pressing the SWING button ( ) vane swings vertically. The remote controller displays “ ”. SWING mode is cancelled when the SWING button or VANE CONTROL button ( ) is pressed or the operation stops or changes to other mode. 7. SLEEP MODE ( ) • When the SLEEP button ( indoor unit is decreased. ) is pressed, the indoor fan speed drops and the air flow sound from the • The indications of the remote controller are “ • When the FAN SPEED CONTROL button ( mode is released. 32 ” and “ ”. ) is pressed during the SLEEP mode , the SLEEP OB206t-2.qxp 25/9/97 8:35 PM Page 33 8. TIMER OPERATION 1. How to set the timer (1) Press OPERATE/STOP button to start the air conditioner. (2) Check that the current time is set correctly. NOTE : Timer operation will not work without setting the current time. Initially “AM0:00” blinks at the current time display of TIMER MONITOR so set the current time, correctly with CLOCK SET button. (3) Press TIMER CONTROL button to select the operation. “ ” button... AUTO START operation (ON timer) “ ” button... AUTO STOP operation (OFF timer) (4) Press HR. and MIN. button to set the timer. Time setting is 10-minute units. HR. and MIN. button will work when “ ” or “ ” mark is flashing. These marks disappear in 1 minute. When setting the ON timer, check that OPERATION INDICATOR of the indoor unit lights. NOTE1 : Be sure to place the remote controller at the position where its signal can reach the air conditioner even during TIMER operation, or the set time may deviate within the range of about 10 minutes. NOTE2 : Reset the timer in the following cases, or the set time may deviate and other malfunctions may occur. ● A power failure occurs. ● The circuit breaker functions. 2. CANCEL Timer setting can be cancelled with the TIMER CONTROL buttons. (“ To cancel the ON timer, press the “ ” or “ ”) ” button. To cancel the OFF timer, press the “ ” button. Timer is cancelled and the display of set time disappears. PROGRAM TIMER ● The OFF timer and ON timer can be used in combination. ●“ ”and “ ” display shows the order of the OFF timer and ON timer operation. (Example 2) The current time is 11:00 AM. (Example 1) The current time is 8:00 PM. The unit turns on at 5:00 PM, and off at 9:00 PM. The unit turns off at 11:00 PM, and on at 6:00 AM. NOTE : TIMER setting will be cancelled by power failure or breaker functioning. 33 OB206t-2.qxp 25/9/97 8:35 PM Page 34 9. EMERGENCY-TEST OPERATION When the remote controller is missing, or has failed, or when the batteries run down, press the EMERGENCY OPERATION switch on the front of the indoor unit. The unit will start and the OPERATION INDICATOR lamp will light. The first 30 minutes of operation will be the test run operation. This operation is for servicing. The indoor fan runs at high speed and the system is in continuous operation. The thermostat is ON and the timer is reset to normal. After 30 minutes of test run operation the system shifts to EMERGENCY COOL MODE with a set temperature of 24°C. The fan shifts to Me speed. This operation continues until the EMERGENCY OPERATION switch is pressed again or any button on the remote controller is pressed, and after that normal operation will start. The coil frost prevention circuit operates in this operation. In the test run or Emergency operation, the horizontal vane operates in AUTO mode with a set temperature of 24°C. NOTE : Do not press the EMERGENCY OPERATION switch during normal operation. Press once <Cool> Press again <Stop> Emergency operation switch 9 SERVICE FUNCTIONS 1. TIMER SHORT MODE For service, set time can be shortened by short circuit of JPG and JPS on the electronics control P.C. board. The time will be shortened as follows. 3-minute delay : 3-minute ➔ 3-second. AUTO START : 1 hour ➔ 1-minutes Short the connector during the timer mode. AUTO STOP : 1 hour ➔ 1-minutes } 2. P.C. BOARD MODIFICATION FOR INDIVIDUAL OPERATION A maximum of 4 indoor units with wireless remote controllers can be used in a room. In this case, to operate each indoor unit individually by each remote controller, P.C. boards of remote controller must be modified according to the number of the indoor unit. (1) <The reset button can be located on the rear side.> MS-07NV - E1 MS-24NV - E1 MS-09NV - E1 MS-18NV - E2 MS-12NV - E1 MS-18NV - E1 How to modify the remote controller P.C. board Remove batteries before modification. The board has a print as shown below : NOTE : For remodeling, take out the batteries at first. After finish remodeling, put back the batteries then push the RESET button. The P.C.board has the print “J10” and “J20”.Jumper wires are mounted to each “J10” and “J20”.Replace J20 and J10 with J21 and J11 according to the number of indoor unit as shown in Table 1. After modification,push the reset button near the batteries. Table.1 1 unit operation 2 units operation 3 units operation 4 units operation No. 1 unit No modification Same as at left Same as at left Same as at left No. 2 unit – Replace J10 with J 11 Same as at left Same as at left No. 3 unit – – Replace J20 with J 21 No. 4 unit – – – Same as at left Replase J10 with J11 Replase J20 with J21 Note : When power supply failure or installation time, Indoor unit will delete memory about its remote controller so when power supply is restoration again, indoor unit recommend its remote controller by receive signal from remote controller at first. 34 OB206t-2.qxp 25/9/97 8:36 PM Page 35 (2)<The reset button can be located on the front side.> MS-07NV MS-12NV MS-07NV MS-12NV MS-24NV - E1 - E1 - E2 - E2 - E2 (Product number 7000001T~) (Product number 7000001T~) MS-09NV MS-24NV MS-09NV MS-18NV MS-18NV - E1 - E1 - E2 - E2 - E3 (Product number 7000001T~) (Product number 7000001T~) (Product number 7000001T~) How to modify the remote controller P.C. board Remove batteries before modification. The board has a print as shown below : NOTE : For remodeling, take out the batteries at first. After finish remodeling, put back the batteries then push the RESET button. The P.C.board has the print “J1” and “J2”.Jumper wires are mounted to each “J1” and “J2”.Cut J1 and J2 according to the number of indoor unit as shown in Table 1. After modification,push the reset button. Table.1 1 unit operation 2 units operation 3 units operation 4 units operation No. 1 unit No modification Same as at left Same as at left Same as at left No. 2 unit – Cut J1 Same as at left Same as at left No. 3 unit – – Cut J2 Same as at left No. 4 unit – – – Cut both J1 and J2 Note : At power supply failure or installation. indoor unit deletes the memory about remote controller. When the power supply is turned on and indoor unit receives the first signals from the remote controller, the remote controller number is designated as the indoor unit number. Therefore at and after the second time indoor unit accepts the remote controller of the initial setting number. At setting-error, turn the power supply off to cancel the individual operation, and then turn the power supply on to restart the setting. 35 OB206t-2.qxp 25/9/97 8:36 PM Page 36 2. AUTO RESTART FUNCTION MS-07NV - E2 MS-12NV - E2 MS-18NV - E3 MS-09NV - E2 MS-24NV - E2 When the indoor unit is controlled with the remote controller, the operation mode, set temperature, and the fan speed are memorized by the indoor electronic control P.C.board. The “AUTO RESTART FUNCTION” sets to work the moment power has restored after power failure.Then, the unit will restart automatically. However if the unit is operated in “I FEEL CONTROL.” mode before power failure, the operation is not memorized. In “I FEEL CONTROL.” mode, the operation is decided by the initial room temperature. How to set “AUTO RESTART FUNCTION” 1Turn off the main power for the unit. 2Removed the electronic control P.C. board and the display P.C.board.(See page 45 and 47.) 3Cut the RESISTOR JR07 (MS-07/09/12) or JR06(MS-18/24) on the indoor electronic control P.C.board. MS-07/09/12 MS-18/24 IC141 CN2 11 CN211 C11 C11 52C CN201 52C CN151 JR07 CN112 CN111 CN121 CN151 SW BZ RA102 SW IC101 CN102 CN101 IC101 CN121 CN112 CN111 CN201 JR06 Operation 1If the main power (220/240V AC) has been cut, the operation settings remain. 2After the power is restored, the unit restarts automatically according to the memory.(However, it takes at least 3 minutes for the compressor to start running.) Note: •The operation settings are memorized when 10 seconds have passed after the indoor unit was operated with the remote controller. •If main power is turned off while AUTO START/STOP timer is active, the timer setting is cancelled when auto restart function works. •If the unit has been off with the remote controller before power failure, the auto restart function does not works as the power button of the remote controller is off. •To prevent breaker off due to the rush of startting current, systematize other home appliance not to turn on at the same time. •When more than one air conditioners are connected under the same power system,compressor starting current as large as that for all the compressors used flows at a time as soon as the units restart automatically. Therefore, the specific counter-measures are required to prevent main voltage drop or the rush of starting current after power failure by providing the system to allow the units to start in regular succession. 36 OB206t-2.qxp 25/9/97 8:36 PM 10 Page 37 TROUBLESHOOTING MS-07NV - E1 MS-24NV - E1 MS-18NV - E2 MS-09NV - E1 MS-07NV - E2 MS-24NV - E2 MS-12NV - E1 MS-09NV - E2 MS-18NV - E3 MS-18NV - E1 MS-12NV - E2 10-1 Cautions on troubleshooting 10-1-1 Before troubleshooting, check the followings: 1) Check the power supply voltage. 2) Check the indoor/outdoor connecting wire for mis-wiring. 10-1-2 Take care the followings during servicing. 1) Before servicing the air conditioner, be sure to first turn off the remote controller to stop the main unit, and then after confirming the horizontal vane is closed, turn off the breaker. 2) When removing the electronic control P.C. board, hold the edge of the board with care NOT to apply stress on the components. 3) When connecting or disconnecting the connectors, hold the housing of the connector. DO NOT pull the lead wires. 10-1-3 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 the abnormality indication for 2 or 3 times before starting service work. 2) If the electronic control P.C. board is supposed to be defective, check the copper foil pattern for disconnection and the components for bursting and discoloration. 3) When troubleshooting, refer to the flow chart and the check table on page 38. 10-1-4 How to replace batteries Weak batteries may cause the remote controller malfunction. In this case, the remote controller can not be repaired only by the battery replacement. To operate the remote controller normally, discharge the remote controller in the following order. This remote controller has the reset button. After refilling new batteries, press the reset button with tip end of ball point pen or the like, and then use the remote controller. B A RESET button RESET button There are two kinds of remote controllers. A type has the RESET button at the back, and B type does it on the front. 37 OB206t-2.qxp 25/9/97 8:36 PM Page 38 10-2 Instruction of troubleshooting Start Indoor unit doesn’t receive the signal from remote controller. Indoor unit operates. Outdoor unit doesn’t operate. Indoor unit doesn’t receive the signal from remote controller. Also, OPERATION INDICATOR lamp doesn’t flash, when the EMERGENCY OPERATION switch is pressed. OPERATION INDICATOR lamp on the indoor unit is flashing on and off. 2-time flash Outdoor unit operates in only Test Run operation. Outdoor unit doesn’t operate even in Test Run operation. Refer to B ”Check of receiver P.C. board” on page 40. 2.5-second OFF 3-time flash Refer to C “Check of indoor electronic control P.C. board” on page 41. 2.5-second OFF Refer to D “Check of outdoor unit” on page 41. Check room temperature thermistor. Cause:Indoor unit 2-time-Room temperature/Indoor coil thermistor trouble 3-time-Indoor fan motor trouble Check indoor coil thermistor. Refer to“Test point diagram and voltage” on page 42~44. Refer to A “Check of indoor fan motor” on page 40. Check room temperature thermistor. Refer to“Test point diagram and voltage” on page 42~44. 10-2-1 troubleshooting check table ❈ Before taking measures make sure that the symptom reappears, for accurate troubleshooting. Self check table NO. Abnormal point Indoor coil thermistor 1 Room temperature thermistor Indication Outdoor unit does not run. Detect Indoor coil/room temperature thermistor short or open circuit every 2 seconds during operation. Check point ● Check thermistor calibration. ● Reconnect connector. ● Check indoor electronic control P.C. board. 2.5-second OFF Indoor fan motor 2.5-second OFF 38 Detect method 2-time flash 3-time flash 2 Symptom Indoor fan repeats 12 seconds ON and 3 minutes OFF. When the indoor fan breaks, the fan keeps stopping. When rotational frequency feedback signal is not emit during 12-second indoor fan operation ● Disconnect connector CN211 and then check connector CN121 2 - 3 to make sure rotational frequency feedback signal of 1.5V or over exists. ● Check indoor electronic control P.C. board. ● Check indoor fan motor. ● Reconnect connector. OB206t-2.qxp 25/9/97 8:36 PM Page 39 MS-07NV - E1 MS-24NV - E1 10-2-2 Trouble criterion of main parts MS-18NV - E2 Part name Check method Room temperature thermistor MS-09NV MS-07NV MS-24NV and criterion MS-12NV MS-09NV MS-18NV - E1 E2 E2 E1 E2 MS-18NV MS-12NV - E1 E2 E3 Figure Measure the resistance with a tester. (Part temperature 10°C ~ 30°C) Indoor coil thermistor Normal Abnormal 8kΩ ~ 20kΩ Opened or short-circuited Measure the resistance between the terminals with a tester. (Coil wiring temperature –10°C ~ 40°C) WHT C P Normal Compressor 07NV 09NV 12NV Abnormal 24NV 18NV AUX ~ MAIN R BLK S C-R 3.67~4.50Ω 3.56~4.36Ω 1.86~2.28Ω 1.05~1.30Ω 0.84~1.04Ω Opened or C-S 5.07~6.21Ω 5.25~6.44Ω 3.50~4.29Ω 2.38~2.92Ω 1.82~2.24Ω short-circuited RED Motor part Measure the resistance between the terminals with a tester. (Coil wiring temperature10°C ~ 30°C) Normal WHT-BLK BLK-RED Indoor fan motor 07/09/12NV 18/24NV 280 ~ 303Ω 176 ~ 192Ω 313 ~ 336Ω Abnormal MAIN Opened or short-circuited 240 ~ 261Ω AUX FUSE Sensor part Measure the voltage Power ON. BLK Normal RED WHT Abnormal BRN-YLW 4.5 ~ 5.5V YLW-GRY (When fan revolved one time) 0V➔5V➔0V (Approx.) Remain 0V or 5V 07NV 09NV MAIN AUX P Measure the resistance between the terminals with a tester. (Coil wiring temperature –10°C ~ 40°C) 12NV 18NV Normal Outdoor fan motor 07/09NV 12NV BLK 18NV 24NV WHT-BLK 236 ~ 290Ω 115 ~ 141Ω 102 ~ 126Ω 71.5 ~ 87.5Ω BLK-RED 344 ~ 422Ω 118 ~ 146Ω 97.9 ~ 120Ω 90.1 ~ 111Ω BLK-YLW RED WHT MAIN AUX Abnormal P Opened or short-circuited BLK RED ORN WHT 81.3 ~ 99.5Ω 24NV MAIN AUX MAIN P YLW BLK RED ORN WHT Measure the resistance between the terminals with a tester. (Part temperature10°C ~ 30°C) Vane motor Normal 07/09/12NV 282 ~ 305Ω 18/24NV 358 ~ 388Ω PNK ROTOR Abnormal Opened or short-circuited ORN RED YLW BLU P INNER PROTECTOR 39 OB206t-2.qxp 25/9/97 8:36 PM Page 40 A Check of indoor fan motor Turn OFF power supply. Check connector CN211 visually. Indoor fan does not operate. No No Yes Are lead wires connected? Is soldered point normal? Yes Reconnect the lead wires. Resolder it. Disconnect lead wires from connector CN211 on indoor electronic control P.C. board. Measure resistance between lead wires No.1 and No.4 and then No.1 and No.2(MS-12/18/24) No.1 and No.3 and then No.2 and No.3(MS-07/09) { Is resistance 0 (short circuit) or ∞ (open circuit)? No (others) Yes ( 0 or ∞ ) } Replace the indoor electronic control P.C. board. Repair the indoor fan motor. B Check of receiver P.C. board Indoor unit operates by pressing the EMERGENCY OPERATION switch, but does not operate with the remote controller. Check the model name of remote controller. Is.LCD display on remote controller visible? No Replace batteries.(see page 37.) (not clear) Yes Remove batteries and then set them back. Check if the unit operates with remote controller. Does the unit operate with remote controller? No Turn on a radio to AM and press switch on remote controller. Yes No OK Replace the remote controller. Is noise heard from radio? Yes Are there any fluorescent lights of inverter or rapid-start type within the range of 1m? Yes ● Re-install the unit away from lights. ● Attach a filter on receiving part. No Turn ON power supply. Measure the voltage between receiver P.C. board connector No.2(+)and No.1(MS-12/18/24) { indoor electronic control P.C. board connector LD101 No.2 and JPG(MS-07/09) } when remote controller button is pressed. Yes Is the voltage approx. 4V DC? No(5V or 0V DC) Replace the receiver. 40 Replace the indoor electronic control P.C. board. OB206t-2.qxp 25/9/97 8:36 PM Page 41 C Check of indoor electronic control P.C. board The unit doesn’t operate with the remote controller. Also, the OPERATION INDICATOR lamp doesn’t light up by pressing the EMERGENCY OPERATION switch. Replace the fuse. Trouble of indoor electronic control P.C. board. Yes Yes No Is fuse(F11)blown? Check both “parts side” and “pattern side” of indoor electronic control P.C.board visually. 1.Pull out power supply cord. 2.Measure voltage between CN201 1 on electronic control P.C. board and N on the terminal block with a tester. Be sure to check both fuse and varistor in any case. Is there resistance? (Approx.0Ω) No Trouble of fuse(F12) Is varistor(NR11)burnt? No 07NV 09NV CN201 3 Yes 1 F12 Replace the varistor. 12NV 18NV 24NV L N Terminal block CN201 1 2 F12 L N Terminal block D Check of outdoor unit Compressor and outdoor fan do not operate.(Only indoor fan operates.) MS-07NV MS-09NV MS-12NV MS-18NV MS-24NV Start Press EMERGENCY OPERATION switch. 3-minute time delay works. Test run operation operates for 30 minutes. Start Press EMERGENCY OPERATION switch. 3-minute time delay works. Test run operation operates for 30 minutes. Check the continuity of indoor and outdoor unit connection. No Yes Check the outdoor fan motor and compressor. Yes Check the the continucontiCheck nuity of indoor ity of indoor and and outdoor unit outdoor unit conconnection. nection. Check voltage to terminal block of outdoor unit. Is there AC220-240V to terminal block between 2 - N ? No Check voltage to terminal block of indoor unit. Is there AC220-240V to terminal block between 2 - N ? No Replace the indoor electronic control P.C. board. Check voltage to terminal block of outdoor unit. Is there AC220-240V to terminal block between 2 - N ? Replace the indoor electronic control P.C.board. No Yes Check voltage to terminal block of outdoor unit. Is there AC220-240V to terminal block between 3 - N ? Yes Check the outdoor wiring and conductor relay at first, then check the outdoor fan motor and compressor. No Check voltage to terminal block of indoor unit. Is there AC220-240V to terminal block between 3 - N ? Yes Check the continuity of indoor and outdoor unit connection. 41 OB206t-2.qxp 25/9/97 8:36 PM Page 42 TEST POINT DIAGRAM AND VOLTAGE MS-18NV - E1 Indoor electronic control P.C. board } Fan motor power supply Fuse AC250V 3.15A } Power supply input AC220-240V + C144 -- C144 } DC5V Indoor coil thermistor (RT12) Room temperature thermistor (RT11) JPS Time short mode point JPG Emergency operation switch Room temperature thermistor (RT11) Indoor coil thermistor (RT12) 42 -- JPG + JP43 } DC12V OB206t-2.qxp 25/9/97 8:38 PM Page 43 TEST POINT DIAGRAM AND VOLTAGE MS-07NV - E1 MS-09NV - E1 MS-12NV - E1 MS-07NV - E2 MS-09NV - E2 MS-12NV - E2 Indoor electronic control P.C. board } Power supply input AC220-240V Varistor(NR11) CN201 No1 Fuse AC250V 3.15A Room temperature thermistor (RT11) Indoor coil thermistor (RT12) Timer short mode point Room temperature thermistor (RT11) Indoor coil thermistor (RT12) 43 OB206t-2.qxp 25/9/97 8:39 PM Page 44 TEST POINT DIAGRAM AND VOLTAGE MS-24NV - E1 MS-18NV - E2 MS-24NV - E2 MS-18NV - E3 Indoor electronic control P.C. board } Fan motor power supply Fuse AC250V 3.15A } Power supply input AC220-240V + C144 -- C144 } DC5V Room temperature thermistor(RT11) Indoor coil thermistor(RT12) Timer short mode point Emergency operation switch -+ JPG JP45 } DC12V Room temperature thermistor (RT11) Indoor coil thermistor (RT12) 44 OB206t-2.qxp 25/9/97 8:39 PM 11 Page 45 DISASSEMBLY INSTRUCTIONS NOTE: ❈ on the wiring diagram shows the terminals with a lock mechanism, so it cannot be removed when you pull the lead wire Be sure to pull the wire by pushing the locking lever (projected part) of the terminal with a finger. ① Slide the sleeve. ➁ Pull the wire while pushing the locking lever. 11-1 MS-07NV - E1 MS-07NV - E2 INDOOR UNIT MS-09NV - E1 MS-09NV - E2 MS-12NV - E1 MS-12NV - E2 OPERATING PROCEDURE PHOTOS 1. Removing the front panel (1) Remove the screws caps of the front panel. Remove the screws. (2) Pull the panel down to your side slightly and unhook the catches at the top. Photo 1 Front panel Screws 2. Removing the electronic control P.C. board and the display P.C. board. (1) Remove the front panel. (Refer to 1) (2) Remove the screw of the electrical cover. Remove the electrical cover. (3) Disconnect the room temperature thermistor and the connector from the indoor coil thermistor. (4) Remove the terminal cover. Remove the screw of the terminal block. (5) Remove the cord clamp. (6) Disconnect all the connectors on the electronic control P.C. board. (7) Remove the screw of the ground wire. (8) Disconnect the white lead wire and the brown lead wire from 52C relay. (9) Remove the electronic control P.C. board and the display P.C. board. Photo 2 Room temperature thermistor connector Ground wire screw Cord clamp Terminal block cover Indoor electronic control P.C.board Terminal block cover screw 45 OB206t-2.qxp 25/9/97 8:40 PM Page 46 OPERATING PROCEDURE PHOTOS 3. Removing the electrical box (1) (2) (3) (4) Remove the front panel. (Refer to 1) Remove the electrical cover. Disconnect the connector of the indoor coil thermistor. Disconnect the motor connector (CN211 and CN121) and the vane motor connector (CN151) on the electronic control P.C. board. (5) Unhook the catches (both upper and lower), remove the electrical box. Catch 4. Removing the vane motor (1) Remove the front panel. (2) Remove the screw of the vane motor, disconnect the connector. (3) Remove the vane motor. Photo 3 Vane motor screw Drain hose Vane motor 5. Removing the line flow fan and the indoor fan motor (1) Remove the front panel. (Refer to 1) (2) Disconnect the connector from the vane motor. (3) Pull out the drain hose from the nozzle assembly, remove the nozzle assembly. (4) Lifting the left side of the heat exchanger, remove the electrical box. (5) Remove the fixture of the fan motor. (6) Remove the hexagon socket set screws. (7) Remove the line flow fan and the fan motor. Photo 4 Fan motor catches Fan motor fixture 46 Indoor coil thermistor OB206t-2.qxp 25/9/97 8:40 PM Page 47 11-2 MS-18NV - E1 MS-24NV - E1 MS-18NV MS-24NV - E2 MS-18NV - E3 INDOOR UNIT OPERATING PROCEDURE E2 PHOTOS 1. Removing the front panel (1) Remove the screws caps at the down of the front panel. Remove the screws. (2) Pull the panel down to your side slightly and unhook the catches at the top. Photo 1 Front panel Screws 2. Removing the electronic control P.C. board (1) (2) (3) (4) (5) (6) (7) Remove the front panel. (Refer to 1) Remove the electriccal cover. Remove the screw, remove the terminal cover. Remove the screw on the terminal block. Unhook the catch of the lamp holder. Remove the receiver holder. Disconnect the connectors and the lead wire from 52C relay on the electronic control P.C. board and remove the ground and the indoor coil thermistor. (8) Remove the electronic control P.C. board. Photo 2 Ground Indoor coil thermistor Screw Terminal block screw Indoor electronic control P.C. board 47 OB206t-2.qxp 25/9/97 8:41 PM Page 48 OPERATING PROCEDURE 3. Removing the electrical box (1) (2) (3) (4) Remove the front panel. (Refer to 1) Remove the electrical cover. Disconnect the connector of the indoor coil thermistor. Disconnect the motor connector (CN211 and CN121) and the vane motor connector (CN151) on the electronic control P.C. board. (5) Remove the screw of the electrical box, remove the electrical box. PHOTOS screw Photo 3 screw 4. Removing the indoor fan motor and the line flow fan (1) Remove the front panel. (2) Remove the electrical box. (3) Unhook the catches on the both sides of the nozzle assembly. (4) Remove the nozzle assembly. (5) Remove the screws of the bearing support. (6) Remove the screw of the heat exchanger unhook the catch. (7) Lifting the heat exchanger, remove the bearing support. (8) Remove the motor support. (9) Loose the screw fixing the line flow fan, remove the line flow fan. (10) Remove the screws of the motor band, remove the fan motor. Photo 3 Heat exchanger Catch Heat exchanger screw Bearing support screws Photo 4 Indoor fan motor Fan motor screws Line flow fan 48 Motor band OB206t-2.qxp 25/9/97 8:41 PM Page 49 11-3 MU-07NV - E1 MU-09NV OUTDOOR UNIT E1 MU-07NV - E2 MU-09NV - OPERATING PROCEDURE E2 PHOTOS 1. Removing the cabinet (1) (2) (3) (4) Remove Remove Remove Remove insides. (5) Remove (6) Remove screws securing the top panel. the screw securing the service panel. screws securing the cabinet. the service panel,and remove the screw from the the top panel. the cabinet. Photo 1 Screw for service panel Service panel Screw for top panel Screws for cabinet Photo 2 Screw for top panel Screw for cabinet 2. Removing the propeller fan and the outdoor fan motor (1) Remove the cabinet.(Refer to 1) (2) Remove the propeller fan nuts. (3) Remove the propeller fan. NOTE:Loose the propeller fan in the rotating direction for removal. When attaching the propeller fan ,align the mark on the propeller fan and the motor shaft cut section. Set the propeller fan in position by using the cut on the shaft and the mark on the propeller fan. (4) Remove lead clamps and disconnect the outdoor fan motor lead wires. (5) Remove screws fixing the fan motor. (6) Remove the outdoor fan motor. Photo 3 Propeller fan Set screws for outdoor fan motor Lead clamps Outdoor fan motor Propeller fan nut 49 OB206t-2.qxp 25/9/97 8:41 PM Page 50 OPERATING PROCEDURE 3. Removing the compressor (1) (2) (3) (4) (5) (6) (7) (8) Remove the lead clamps. Remove the screws fixing the relay panel. Remove the screw fixing the service port. Remove the terminal cover. Pull out the lead from the compressor terminal. Remove the overcurrent relay. Remove the compressor nuts. Detach the suction pipe welded section and discharge pipe welded section with a burner. PHOTOS Photo 4 Discharge pipe Terminal cover NOTE ● Before using a burner, purge gas from the pipes until the pressure gauge shows 0 kg/cm2. ● Use the burner under the condition that gas can be released even when the inner pressure rises by heat. compressor 50 Suction pipe OB206t-2.qxp 25/9/97 8:42 PM Page 51 11-4 MU-12NV - E1 MU-18NV - E1 E2 MU-18NV MU-24NV - E2 OUTDOOR UNIT OPERATING PROCEDURE MU-24NV MU-18NV - E1 MU-12NV - E2 E3 PHOTOS 1. Removing the cabinet (1) Remove the screws of the cabinet. (2) Hold the bottom of the cabinet on the both side to remove the cabinet. Photo 1 Screws Service panel Photo 2 Screws 2. Removing the electrical parts (1) Remove the service panel and the cabinet. (2) Remove the following parts. •Compressor capacitor (C1) •Outdoor fan capacitor (C2) •Terminal block Photo 3 Compressor capacitor 51 OB206t-2.qxp 25/9/97 8:42 PM Page 52 OPERATING PROCEDURE 3. Removing the outdoor fan motor (1) Remove the cabinet. (Refer to 1) (2) Disconnect the connector remove the hooked lead wire from the fan motor. (3) Remove the propeller nut and remove the propeller. (4) Remove screws securing the fan motor. PHOTOS Hook Photo 4 Connector Soundproof felt Propeller fan 4. Removing the compressor (1) (2) (3) (4) (5) (6) (7) (8) (9) Remove the cabinet. (Refer to 1) Remove the soundproof felt. Remove the terminal cover on the compressor Disconnect lead wires from the glass terminal of the compressor.(Refer to 2) Release gas from the refrigerant circuit. Disconnect the welded part of the discharge pipe. Disconnect the welded part of the suction pipe. Remove nuts fixing the compressor. Remove the compressor. Propeller nut Photo 5 Discharge pipe Suction pipe Compressor Compressor set nuts 52 OB206t-2.qxp 25/9/97 8:43 PM 12 Page 53 PARTS LIST INDOOR UNIT STRUCTURAL PARTS MS-07NV - E1 (WH) MS-09NV - E1 (WH) MS-12NV - E1 (WH) MS-07NV - E2 (WH) MS-09NV - E2 (WH) MS-12NV - E2 (WH) 5 1 4 6 Optional part (See page 62.) 2 3 Symbol NO. Part No. Part Name in Wiring Diagram E02 202 000 FRONT PANEL(WH) 1 Q'ty/unit MS-07NV- E1 MS-07NV- E2 MS-09NV- E1 (WH) (WH) 1 1 E02 158 000 FRONT PANEL(WH) MS-09NV- E2 MS-12NV- E1 MS-12NV- E2 (WH) (WH) 1 1 E02 160 000 FRONT PANEL(WH) (WH) (WH) 1 1 2 E02 151 010 GRILLE(WH) 1 1 1 1 1 1 3 E02 164 100 AIR FILTER 2 2 2 2 2 2 E02 151 234 BOX(WH) 1 4 1 1 1 5 E02 151 970 INSTALLATION PLATE 1 1 1 1 1 1 6 E02 166 067 SCREW CAP(WH) 2 2 2 2 2 2 INDOOR UNIT HEAT EXCHANGER MS-07NV - E1 (WH) MS-09NV - E1 (WH) MS-12NV - E1 (WH) MS-07NV - E2 (WH) MS-09NV - E2 (WH) MS-12NV - E2 (WH) 2 Symbol Part No. Part Name in Wiring Diagram 1 2 3 2PCS/SET 1 3 NO. 1PC/SET 1 1 E02 166 234 BOX(WH) Remarks E02 151 620 INDOOR HEAT EXCHANGER Q'ty/unit MS-07/09NV(WH) MS-12NV- E1 (WH) E2 Remarks 1 {9.52 1 E02 155 666 UNION(GAS) E02 151 667 UNION(LIQUID) E2 1 E02 155 620 INDOOR HEAT EXCHANGER E02 151 666 UNION(GAS) E1 1 1 {12.7 1 {6.35 53 OB206t-2.qxp 25/9/97 8:44 PM Page 54 INDOOR UNIT ELECTRICAL PARTS MS-07NV - E1 (WH) MS-09NV - E1 (WH) MS-12NV - E1 (WH) MS-07NV - E2 (WH) MS-09NV - E2 (WH) MS-12NV - E2 (WH) 8 16 9 7 11 10 6 3 5 1 2 4 13 12 Part number that are circled is not shown in the illustration. Symbol NO. Part No. Part Name Q'ty/unit in Wiring MS-07NV(WH) Diagram E1 E2 MS-09NV(WH) E1 E2 MS-12NV(WH) E1 E2 Remarks 1 E02 166 235 NOZZLE(WH) 1 1 1 2 E02 166 040 VANE(WH) 1 1 1 3 E02 141 702 DRAIN HOSE 1 1 1 4 E02 151 303 VANE MOTOR MV 1 1 1 5 E02 151 300 INDOOR FAN MOTOR MF 1 1 1 RC4V19 - 6 E02 151 505 RUBBER MOUNT 2 2 2 2PCS/SET 7 E02 151 302 LINE FLOW FAN 1 1 1 8 E02 151 509 BEARING MOUNT 9 E02 151 308 ROOM TEMPERATURE THERMISTOR 10 E02 151 307 INDOOR COIL THERMISTOR 11 E02 197 375 TERMINAL BLOCK 12 1 1 1 1 1 RT12 1 1 1 TB 1 1 1 1 1 1 1 1 F11 1 1 1 NR11 1 1 1 1 1 1 1 1 1 1 1 1 E02 202 450 ELECT CONTROL P.C.BOARD E02 204 450 ELECT CONTROL P.C.BOARD 13 E02 152 395 POWER SUPPLY CORD 14 E02 127 382 FUSE 15 E02 085 385 VARISTOR 16 E02 001 504 SLEEVE BEARING 17 E02 151 468 RECEIVER 18 E02 199 520 FAN GUARD 54 1 RT11 1 3.15A OB206t-2.qxp 25/9/97 8:45 PM Page 55 OUTDOOR UNIT STRUCTURAL PARTS MU-07NV - E1 MU-09NV - E1 MU-07NV - E2 MU-09NV - E2 2 5 10 1 8 9 3 11 4 7 6 Part number that are circled is not shown in the illustration. Symbol NO. Part No. Part Name in Wiring Diagram Q'ty/unit MU-07NV MU-07NV - E1 E2 MU-09NV MU-09NV - 1 E02 096 232 CABINET 1 1 2 E02 085 297 TOP PANEL 1 1 3 E02 199 521 FAN GUARD 1 1 4 E02 085 245 SERVICE PANEL 1 1 5 E02 085 630 OUTDOOR HEAT EXCHANGER 1 1 6 E02 127 900 COMPRESSOR MC E02 164 900 COMPRESSOR MC 1 E1 Remarks E2 RH-145VGHT RH-135VGHT 1 7 E02 047 506 COMPRESSOR RUBBER SET 3 3 8 E02 096 662 STOP VALVE(LIQUID) 1 1 { 6.35 9 10 E02 085 515 MOTOR SUPPORT 11 E02 127 290 BASE 1 1 { 9.52 1 1 1 1 12 E02 158 936 CAPILLARY TUBE 1 1 E02 096 661 STOP VALVE(GAS) {3.0 ✕{1.6 ✕ 1200 55 OB206t-2.qxp 25/9/97 8:45 PM Page 56 OUTDOOR UNIT FUNCTIONAL PARTS AND ELECTRICAL PARTS MU-07NV - E1 MU-09NV - E1 MU-07NV - E2 MU-09NV - E2 4 1 5 2 3 Symbol NO. Part No. Part Name in Wiring Diagram Q'ty/unit MU-07NVMU-09NV- E1 E2 E1 E2 Remarks 1 1 E02 085 501 PROPELLER FAN 2 E02 085 301 OUTDOOR FAN MOTOR MF 1 RA6V23- 3 E02 085 353 COMPRESSOR CAPACITOR C1 1 25+/440VAC 4 E02 002 350 OUTDOOR FAN CAPACITOR C2 1 1.5+/440VAC 5 E02 202 374 TERMINAL BLOCK TB 1 56 OB206t-2.qxp 25/9/97 8:46 PM Page 57 OUTDOOR UNIT STRUCTURAL PARTS MU-12NV - E1 MU-12NV - E2 3 16 15 14 4 7 13 2 12 1 10 11 6 9 5 8 Part number that are circled is not shown in the illustration. Symbol NO. Part No. Part Name in Wiring Diagram Q'ty/unit MU-12NV- E1 MU-12NV- Remarks E2 1 E02 141 521 GRILLE 1 1 2 E02 141 232 CABINET ASSEMBLY 1 1 3 E02 140 233 BACK PANEL 1 1 4 E02 141 245 SERVICE PANEL 1 1 5 E02 075 506 COMPRESSOR RUBBER SET 3 3 6 E02 140 515 MOTOR SUPPORT 1 1 7 E02 141 630 OUTDOOR HEAT EXCHANGER 1 1 8 E02 141 900 COMPRESSOR 1 1 9 E02 140 290 BASE 1 1 1 1 { 6.35 1 1 { 12.7 MC 10 E02 139 662 STOP VALVE(LOQUID) 11 E02 140 661 STOP VALVE(GAS) RH-231VHAT 12 E02 141 501 PROPELLER FAN 13 E02 141 301 OUTDOOR FAN MOTOR 1 1 MF 1 1 RA6V40 - 14 E02 079 353 COMPRESSOR CAPACITOR 15 E02 204 374 TEAMINAL BLOCK C1 1 1 30+/440VAC TB 1 1 C2 1 1 3.0MFD/440VAC 1 1 {3.0✕{1.8✕800 16 E02 138 351 OUTDOOR FAN CAPACITOR 17 E02 140 936 CAPILLARY TUBE 57 OB206t-2.qxp 25/9/97 8:47 PM Page 58 INDOOR UNIT STRUCTURAL PARTS MS-18NV - E1 (WH) MS-24NV - E1 (WH) MS-18NV - E2 (WH) MS-24NV - E2 (WH) MS-18NV - E3 (WH) 1 5 3 Optional parts (See page 62.) 6 2 6 6 4 Part number that are circled is not shown in the illustration. Symbol NO. Part No. Part Name Q'ty/unit in Wiring MS-18NV- E1 (WH) Diagram E2 E3 MS-24NV- E1 (WH) 1 E02 138 000 FRONT PANEL (WH) 1 1 2 E02 138 010 GRILLE (WH) 1 1 3 E02 143 234 BOX (WH) 1 1 4 E02 141 100 AIR FILTER 2 2 5 E02 141 970 INSTALLATION PLATE 1 1 6 E02 143 067 SCREW CAP (WH) 3 3 E02 171 007 LAMP PANEL (WH) 1 7 E02 176 007 LAMP PANEL (WH) E2 Remarks 1PC/SET 3PCS/SET 1 INDOOR UNIT HEAT EXCHANGER PARTS MS-18NV - E1 (WH) MS-24NV - E1 (WH) 1 MS-18NV - E2 (WH) MS-24NV - E2 (WH) MS-18NV - E3 (WH) 2 3 Symbol NO. 1 2 3 58 Part No. Part Name Q'ty/unit in Wiring MS-18NV - E1 (WH) Diagram E02 141 620 INDOOR HEAT EXCHANGER 1 E02 138 667 UNION(LIQUID) 1 E02 176 667 UNION(LIQUID) E02 138 666 UNION(GAS) 1 E2 E3 MS-24NV (WH) E1 E2 Remarks 1 {6.35 1 {9.52 1 {15.88 OB206t-2.qxp 25/9/97 8:48 PM Page 59 INDOOR UNIT ELECTRICAL PARTS MS-18NV - E1 (WH) MS-24NV - E1 (WH) MS-18NV - E2 (WH) MS-24NV - E2 (WH) MS-18NV - E3 (WH) 10 11 5 15 7 8 4 5 3 1 16 12 2 17 9 6 Part number that are circled is not shown in the illustration. Symbol NO. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 Part No. E02 E02 E02 E02 E02 E02 E02 E02 E02 E02 E02 E02 E02 E02 E02 E02 E02 E02 E02 E02 E02 E02 E02 E02 E02 E02 143 143 141 141 213 001 138 147 320 138 213 197 141 141 138 141 138 209 197 085 141 001 138 138 127 138 235 040 702 300 300 505 395 395 395 450 450 450 302 303 329 509 375 375 375 385 468 504 307 308 382 520 Part Name NOZZLE (WH) VANE (WH) DRAIN HOSE INDOOR FAN MOTOR INDOOR FAN MOTOR RUBBER MOUNT POWER SUPPLY CORD POWER SUPPLY CORD POWER SUPPLY CORD ELECT CONTROL P.C. BOARD ELECT CONTROL P.C. BOARD ELECT CONTROL P.C. BOARD LINE FLOW FAN VANE MOTOR DISPLAY P.C. BOARD BEARING MOUNT TERMINAL BLOCK TERMINAL BLOCK TERMINAL BLOCK VARISTOR RECEIVER P. C. BOARD SLEEVE BEARING INDOOR COIL THERMISTOR ROOM TEMPERATURE THERMISTOR FUSE FAN GUARD 14 Q'ty/unit in Wiring MS-18NV Diagram (WH) 1 1 1 1 MF E1 MS-18NV- MS-24NV - E1 MS-24NV - (WH) (WH) 1 1 1 1 1 1 1 1 1 1 1 2 1 2 MF 2 1 E2 E3 (WH) 2 1 E2 Remarks RA4V27 -EA RA4V27 -EC 2PCS/SET 1 1 1 MV TB TB TB NR11 RT12 RT11 F11 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 3.15A 59 OB206t-3.qxp 25/9/97 8:49 PM Page 60 17 OUTDOOR UNIT STRUCTURAL PARTS MU-18NV - E1 MU-24NV - E1 MU-18NV - E2 MU-24NV - E2 1 MU-18NV - E3 11 12 10 4 8 3 2 15 16 9 7 5 6 14 Part number that are circled is not shown in the illustration. NO. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 60 Part No. E02 E02 E02 E02 E02 E02 E02 E02 E02 E02 E02 E02 E02 E02 E02 E02 E02 E02 E02 E02 E02 E02 E02 E02 E02 E02 E02 E02 E02 E02 141 141 141 138 147 138 139 138 042 138 176 144 147 141 144 082 138 141 197 209 138 176 138 139 176 150 140 010 229 288 232 521 245 630 630 515 515 900 900 290 290 301 301 501 353 353 351 374 374 374 936 936 506 662 662 661 233 342 381 343 Part Name CABINET GRILLE SERVICE PANEL OUTDOOR HEAT EXCHANGER OUTDOOR HEAT EXCHANGER MOTOR SUPPORT MOTOR SUPPORT COMPRESSOR COMPRESSOR BASE BASE OUTDOOR FAN MOTOR OUTDOOR FAN MOTOR PROPELLER FAN COMPRESSOR CAPACITOR COMPRESSOR CAPACITOR OUTDOOR FAN CAPACITOR TERMINAL BLOCK TERMINAL BLOCK TERMINAL BLOCK CAPILLARY TUBE CAPILLARY TUBE COMPRESSOR RUBBER SET STOP VALVE(LIQUID) STOP VALVE(LIQUID) STOP VALVE(GAS) BACK PANEL COMPRESSOR CONTACTOR THERMAL REED SWITCH FAN MOTOR RELAY Symbol in Wiring Diagram MC MC MF MF C1 C1 C2 TB TB TB Q'ty/unit MU-18NV - E1 MU-18NV - E2 E3 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 MU-24NV - E2 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 4 1 1 1 4 1 1 1 1 1 1 1 1 1 1 Remarks NH-33VMDT NH-47VMDT RA6V50 RA6V60 45+/440V 50+/440V 3.0+/440V 1 1 1 4 1 4 1 1 1 52C 1 1 MU-24NV - E1 1 1 1 1 1 {3.0✕{2.0✕700 {3.0✕{1.6✕350 { 6.35 { 9.52 {15.88 OB206t-3.qxp 25/9/97 8:50 PM Page 61 ACCESSORY AND REMOTE CONTROLLER PARTS MS-07NV - E1 (WH) MS-09NV - E1 (WH) MS-12NV - E1 (WH) 2 MS-18NV - E1 (WH) MS-24NV - E1 (WH) MS-07NV - E2 (WH) MS-09NV - E2 (WH) MS-12NV - E2 (WH) MS-18NV - E2 (WH) MS-24NV - E2 (WH) MS-18NV - E3 (WH) Symbol Part No. NO. 1 Q'ty/unit in Wiring MS-07/09/12/18/24NVDiagram MS-07/09/12/18/24NV- Part Name E1 E2 1 E02 138 426 REMOTE CONTROLLER 1 2 E02 141 083 REMOTE CONTROLLER HOLDER 1 13 MS-18NV (WH) E3 Remarks OPTIONAL PARTS 1. REFRIGERANT PIPES The air conditioner has flared connections its indoor and outdoor sides. Please use the optional extension pipe as follows. Model MS-07NVMS-09NVMS-07NVMS-09NV- E1 MS-12NVMS-12NV- E1 MS-18NVMS-18NVMS-18NV- E1 MS-24NVMS-24NV- E1 E2 E2 E2 E2 E3 E1 E2 Part No. Pipe length MAC-440PI MAC-441PI MAC-442PI MAC-443PI MAC-660PI MAC-661PI MAC-662PI MAC-663PI MAC-664PI MAC-670PI MAC-671PI MAC-672PI MAC-673PI MAC-674PI MAC-860PIE MAC-861PIE MAC-862PIE MAC-863PIE MAC-864PIE 3m 5m 7m 10m 3m 5m 7m 10m 15m 3m 5m 7m 10m 15m 3m 5m 7m 10m 15m Cross-section Pipe size O.D mm (in.) A-Gas B-Liquid Insulation C D 27 9.52 (3/8) 21 Additional refrigerant charge R-22 (g) 0 45 0 12.7 (1/2) 6.35 (1/4) 45 120 31 27 0 45 120 15.88 (5/8) 0 9.52 (3/8) 45 120 61 OB206t-3.qxp 25/9/97 8:50 PM Page 62 2. AIR CLEANING FILTER ● AIR CLEANING FILTER removes fine dust of 0.01 micron from air by means of static electricity. ● Normal life of AIR CLEANING FILTER is 3 months. However, when it becomes dirty, replace it as soon as possible. ● Clogged AIR CLEANING FILTER may reduce the air conditioner capacity or cause frost on the air outlet. ● DO NOT reuse AIR CLEANING FILTER even if it is washed. ● DO NOT remove or attach AIR CLEANING FILTER during unit operation. Part No. Model MS-07NV - E1 E2 , MS-09NV - MS-18NV - E1 E2 E3 E1 , MS-24NV - E2 E1 , MS-12NV - E1 E2 MAC-1000FT MAC-1100FT E2 3. DEODORIZING FILTER ● ● ● ● DEODORIZING FILTER removes ammonia and hydrogen sulphide emitted from tobacco, and odors of pets. Clean DEODORIZING FILTER every two weeks. If the filter is particularly dirty, clean the filter more often. For cleaning, soak the filter in warm water for a while, and then wash and rinse it. Dry the filter in the shade thoroughly. When the filter color is still dark even after cleaning, replace the filter with a new one. Replace the filter at least once a year. Part No. Model MS-07NV - E1 E2 , MS-09NV - MS-18NV - E1 E2 E3 E1 , MS-24NV - E2 E1 , MS-12NV E2 E1 E2 MAC-1500DF MAC-1600DF ● DEODORIZING FILTER and AIR CLEANING FILTER can be attached on either side. 62 OB206t-3.qxp 25/9/97 8:50 PM Page 63 OB206t-3.qxp 25/9/97 8:50 PM Page 64 HEAD OFFICE MITSUBISHI DENKI BLDG.MARUNOUCHI TOKYO100 TELEX J24532 CABLE MELCO TOKYO C Copyright 1997 MITSUBISHI ELECTRIC ENGINIEERING CO.,LTD Issued in Sep. 1997. No.OB206 646 Printed in Japan New publication, effective Sep. 1997 Specifications subject to change without notice.