Download Mitsubishi MS-07RV Service manual
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OB252C-1.qxp 02.4.25 11:27 AM Page 1 NOTE: • This service Manual covers only change points. Please refer to the Service Manual OB227 REVISED EDITION-B for unchanged contents. • Please refer to the following service manual when the outdoor unit is the under mentioned model. MXZ-32SV- E1 : OB254 MXZ-18TV- E1 : OB280 MUX-19/20/25TV- E1 : OB284 • Please void OB252 REVISED EDITION-B. SPLIT-TYPE, AIR CONDITIONERS SPLIT-TYPE, HEAT PUMP AIR CONDITION No. OB252 REVISED EDITION-C SERVICE MANUAL Wireless type Models MSC-07RV MSC-09RV MSC-12RV MSC-07RV MSC-09RV MSC-12RV MSC-07RV MSC-09RV MSC-12RV MSC-07RV MSC-09RV MSC-12RV MSC-07RV MSC-09RV MSC-12RV MSC-07RV MSC-09RV MSC-12RV - E2 (WH) E2 (WH) E2 (WH) E3 (WH) E3 (WH) E3 (WH) E4 (WH) E4 (WH) E4 (WH) E2 (WH) E2 (WH) E2 (WH) E3 (WH) E3 (WH) E3 (WH) E4 (WH) E4 (WH) E4 (WH) · · · · · · · · · · · · · · · · · · MU-07RV MU-09RV MU-12RV MU-07RV MU-09RV MU-12RV MU-07RV MU-09RV MU-12RV MUH-07RV MUH-09RV MUH-12RV MUH-07RV MUH-09RV MUH-12RV MUH-07RV MUH-09RV MUH-12RV E2 E2 E2 E3 E3 E3 E4 E4 E4 - E2 · MUX-10RV · MUX-18RV · MUX-24RV - E2 E2 E2 E3 E3 E3 E4 E4 E4 Multi system type MSC-07RV MSC-09RV MSC-12RV - E2 (WH) E2 (WH) E2 (WH) E2 E2 Inverter controlled multi system type · MXZ-18RV - E2 CONTENTS MSC-07RV MSC-09RV MSC-12RV - E4 E4 E4 1. 2. 3. 4. 5. 6. 7. 8. TECHNICAL CHANGES ····································3 PART NAMES AND FUNCTIONS······················8 SPECIFICATION···············································11 WIRING DIAGRAM ··········································13 REFRIGERANT SYSTEM DIAGRAM ··············15 MICROPROCESSOR CONTROL ····················16 TROUBLESHOOTING······································16 PARTS LIST ·····················································27 OB252C-1.qxp 02.4.25 11:27 AM Page 2 REVISION Parts numbers have been partially modified. Model MSC-07/09/12RV- E1 MSC-07/09/12RV- E2 MSC-07/09/12RV- E2 Page Part name Part number P27 REMOTE CONTROLLER HOLDER E02 504 426 ➔ E02 141 083 P27 REMOTE CONTROLLER E02 141 083 ➔ E02 504 426 OB252C-1.qxp 02.4.25 11:27 AM 1 Page 3 TECHNICAL CHANGES Circle shows the change point of the model. No. Change point 1 2 3 4 5 6 7 8 9 10 11 12 13 MSC-09RV- MSC-07RVE1 The specifications of Indoor and Outdoor fan motor. The data of Med. and Low speed are added to Indoor fan motor specification✼ ✼The data value of indoor fan motor does not change if the indoor unit is connected to a multi-type outdoor unit. Remote controllers of COOL ONLY or COOL & HEAT type are outdoor unit accessory. Remote controller is included as an indoor unit accessory. Two-way common remote controller Two-way (using dip switch) remote controller The specification of electronic control P.C. board is compatible with remote controllers of COOL ONLY and COOL & HEAT type. Indoor electronic control P.C. board has changed for two-way remote controller. Indoor electronic control P.C. board has changed for two-way remote controller. Microprocessor programing flow has changed. Electronic control P.C. board for E3 is interchangeable with the one for E2 (except for MSC-12RV). (New P.C. board) Indoor electronic control P.C. board has changed. Earth wire from the board is fixed to the electrical box with screw. The shape of connector CN211 has changed. Indoor electronic control P.C. board has been connected with Power monitor, receiver P.C. board using connector. When fan speed is set to"Auto", initial temperature difference specitying changing fan speed has been improved in order to reach the set temperature faster than E1, E2, and E3. The mark of terminal block has changed. Terminal block for E4 is interchangeable with the ones for E1, E2 and E3. Winding resistance and shape of fan motor have changed. Fan motor for E4 is not interchangeable with the ones for E1, E2 and E3 except for MSC-12RV. Fan motor rubber mount has changed because the shape of fan motor was changed. 3 E2 E3 E4 E1 E2 E3 E4 MSC-12RVE1 E2 E3 E4 OB252C-1.qxp 02.4.25 11:27 AM Page 4 Circle shows that change points apply to the models. No. Change point 1 Remote controller of COOL ONLY type is outdoor unit accessory. 2 Remote controller is included as an indoor unit accessory. 3 4 5 6 7 8 9 10 11 12 13 MU-09RV- MU-07RVE1 Compressor contactor (52C) has changed. Compressor contactor for E2,E3,E4 are interchangeable with the ones for E1. Compressor has changed. Compressors for E3 and E4 are not interchangeable with the ones for E1 and E2. Compressor capacitor has changed. Due to different shape, compressor capacitor for E4 is not interchangeable with the ones for E1, E2 and E3. Fuse has been removed. Wiring diagram has changed because fuse was removed. The shape of propeller fan has changed. The number of propeller fan has changed from four to three. Propeller fan for E4 is not interchangeable with the ones for E1, E2 and E3. The shape, diameter of axis and fan speed of fan motor have changed. Fan motor for E4 is not interchangeable with the ones for E1, E2 and E3. Fan motor capacitor has changed. 1.5+➔ 2.0+ Fan motor capacitor for E4 is not interchangeable with the ones for E1, E2 and E3(MU-12RV only). Refrigerant filing capacity has changed. 0.85kg➔ 0.80kg The method of troubleshooting for outdoor unit has changed. The repairing procedure when outdoor unit does not stop has been added to troubleshooting. 4 E2 E3 E4 E1 E2 E3 MU-12RVE4 E1 E2 E3 E4 OB252C-1.qxp 02.4.25 11:27 AM Page 5 Circle shows that change points apply to the models. Change point No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 Remote controller of COOL & HEAT type is outdoor unit accessory. Remote controller is included as an indoor unit accessory. Accumulator has been removed. Compressor has changed. Compressor capacitor has changed. Due to different shape, compressor capacitor for E4 is not interchangeable with the ones for E1,E2 and E3. The mark of terminal block has changed. Terminal block for E4 is interchangeable with the ones for E1, E2 and E3. Deicer P.C. board has changed. Jumper wire of compulsory defrosting mode has changed. (JP607-R853➔JPDS-JPSG) Jumper wire for defrost setting has changed. (JPC-JPE➔JRF-JRG) (Refer to page 26.) The defrosting intervals which are changed by setting a short circuit are the same as E1, E2, and E3. Deicer P.C. board for E4 is not interchangeable with the ones for E1, E2 and E3. Wiring diagram has changed according to the following reasons; the shape of connectors CN711 and CN661 has changed and R.V. coil relay (X62) has changed into SSR (SR62). X62 has changed into SR62 in Example of Operation time chart in HEAT operation. Compared to E1, E2, and E3, no change has been made about the operational condition for defrosting and tne control system of R.V. coil (timing of switching on/off). The shape of propeller fan has changed. The number of propeller fan has changed from four to three. Propeller fan for E4 is not interchangeable with the ones for E1,E2, and E3. The shape and diameter of axis of fan motor have changed. The shape of connector has changed. Fan motor and connector for E4 are not interchangeable with those for E1, E2 and E3. Refrigerant filling capacity has changed. 0.80kg➔ 0.85kg The method of checking serial signal error for E4 has been added. The method of troubleshooting for outdoor unit has changed. The method for checking thermistor has been added to troubleshooting. The method for checking 4-way valve has been added to troubleshooting. The repairing procedure when outdoor unit does not stop has been added to troubleshooting. MUX-10RV - E1 MUX-18RV - E1 MUX-24RV - E1 MXZ-18RV - E1 MUH-09RV- MUH-07RVE1 MUX-10RV - E2 MUX-18RV - E2 MUX-24RV - E2 MXZ-18RV - E2 1. Remote controller is unprovided as the outdoor unit accessory. 5 E2 E3 E4 E1 E2 E3 E4 MUH-12RVE1 E2 E3 E4 OB252C-1.qxp 02.4.25 11:27 AM Page 6 Reference REMOTE CONTROLLER Model COOL ONLY COOL & HEAT TWO-WAY TWO-WAY DIP switch ✕ ✕ ✕ MS-07/09/12RV- E1 MSH-07/09/12RV- E1 ✕ w When HEAT mode is selected w MS-07/09/12RV- E2 MSH-07/09/12RVMS-07/09/12RV- E3 ✕ MSH-07/09/12RV- E3 ✕ E2 by the remote controller of COOL & HEAT type, the unit will operate in FAN mode. MS-07/09/12RV- E4 MSH-07/09/12RV- E4 MSC-07RV - E1 MSC-09RV - E1 MSC-12RV - E1 MU-07RV - E1 MU-09RV - E1 MU-12RV - E1 MUH-07RV - E1 MUH-09RV - E1 MUH-12RV - E1 ✕ MSC-07RV - E2 MSC-09RV - E2 MSC-12RV - E2 MU-07RV - E2 MU-09RV - E2 MU-12RV - E2 MUH-07RV - E2 MUH-09RV - E2 MUH-12RV - E2 COOL ONLY REMOTE CONTROLLER COOL&HEAT REMOTE CONTROLLER TWO-WAY REMOTE CONTROLLER TWO-WAY REMOTE CONTROLLER 1. Both of COOL ONLY and COOL & HEAT remote controller are unified into a two-way remote controller. 2. FAN mode operation is available in COOL ONLY unit. In this case the set room temperature will be displayed on the remote controller, however, the room temperature can not be controlled by remote controller button. HEAT operation is available in only HEAT & COOL type unit. MSC-07RV - E2 MSC-09RV - E2 MSC-12RV - E2 MSC-07RV - E3 MSC-09RV - E3 MSC-12RV - E3 TWO-WAY REMOTE CONTROLLER TWO-WAY DIP SWITCH REMOTE CONTROLLER • Outlines and dimensions have been changed. 19 162 58 Wireless remote controller 6 OB252C-1.qxp 02.4.25 11:27 AM Page 7 • The way of remodelling individual operation of P.C Board of remote controller has changed. 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. How to modify the remote controller P.C. board Remove batteries before modification. The board has a print as shown below : NOTE : For remodelling, take out the batteries and press the OPERATE/STOP(ON/OFF)button twice or 3 times at first. After finish remodelling, put back the batteries then press the RESET button. The P.C. board has the print “J1” and “J2”. Solder “J1” and “J2” according to the number of indoor unit as shown in Table 1. After modification, press 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 – Solder J1 Same as at left Same as at left No. 3 unit – – Solder J2 Same as at left No. 4 unit – – – Solder both J1 and J2 REMOTE CONTROLLER (How to set the type) This remote controller setting needs to be switched according to the type of air conditioner (COOL & HEAT or COOL ONLY). If the setting is incorrect, the air conditioner does not operate normally. Therefore, check if the setting corresponds to the type of air conditioner. If it does not, correct the setting as shown below. Slide switch Type The position of the slide switch 7 COOL & HEAT COOL ONLY OB252C-1.qxp 02.4.25 11:27 AM Page 8 • How to replace batteries Weak batteries may cause the remote controller malfunction. In this case, replace the batteries to operate the remote controller normally. 1 Remove the front lid and insert batteries. Then re-attach the front lid. / 2 Press the RESET button. HE /FA AT N / HE /FA AT N Insert the negative pole of the batteries first. Check if the polarity of the batteries are correct. RESET button NOTE : If the RESET button is not pressed, the remote controller may not operate correctly. 2 PART NAMES AND FUNCTIONS MSC-07RV MSC-09RV MSC-12RV MSC-07RV MSC-09RV MSC-12RV MSC-07RV MSC-09RV MSC-12RV MSC-07RV MSC-09RV MSC-12RV MSC-07RV MSC-09RV MSC-12RV MSC-07RV MSC-09RV MSC-12RV ACCESSORIES MSC-07RV MSC-09RV MSC-12RV MSC-07RV MSC-09RV MSC-12RV - E1 - E1 - E1 - E1 - E1 - E1 • • • • • • MU-07RV - E1 MU-09RV - E1 MU-12RV - E1 MUH-07RV - E1 MUH-09RV - E1 MUH-12RV - E1 - E2 - E2 - E2 - E2 - E2 - E2 - E3 - E3 - E3 - E3 - E3 - E3 - E4 - E4 - E4 - E4 - E4 - E4 • • • • • • • • • • • • • • • • • • MU-07RV - E2 MU-09RV - E2 MU-12RV - E2 MUH-07RV - E2 MUH-09RV - E2 MUH-12RV - E2 MU-07RV - E3 MU-09RV - E3 MU-12RV - E3 MUH-07RV - E3 MUH-09RV - E3 MUH-12RV - E3 MU-07RV - E4 MU-09RV - E4 MU-12RV - E4 MUH-07RV - E4 MUH-09RV - E4 MUH-12RV - E4 <Indoor unit> <Indoor unit> 1 Installation plate 1 2 Installation plate fixing screw 4 o 25 mm 5 3 Remote controller mounting hardware 1 4 Fixing screw for 3 3.5 o 16 mm 2 5 Battery (AAA) for remote controller 2 6 Felt tape (Used for left or left-rear piping) 1 7 Deodorizing filter 1 8 Air cleaning filter 1 <Outdoor unit> 1 Installation plate 2 Installation plate fixing screw 4 o 25 mm 1 3 Remote controller mounting hardware 4 Fixing screw for 3 3.5 o 16 mm 1 5 Battery (AAA) for remote controller 6 Wireless remote controller 2 7 Felt tape (Used for left or left-rear piping) 8 Deodorizing filter 1 9 Air cleaning filter 1 5 2 1 1 <Outdoor unit: MUH type> 9 Wireless remote controller 1 0 Drain socket 1 0 Drain socket: MUH type 1 1 Drain cap 2 1 Drain cap: MUH type 2 8 OB252C-1.qxp 02.4.25 11:27 AM Page 9 MSC-07RV - E2 MSC-09RV - E2 MSC-12RV - E2 REMOTE CONTROLLER Signal transmitting section Operation display section AM CLOCK PM 6 00 1 1 00 OPERATE /STOP (ON /OFF)button ON/OFF TOO WARM TOO COOL OPERATION SELECT button TEMPERATURE buttons MODE I FEEL COOL DRY HEAT/FAN VANE FAN VANE CONTROL button FAN SPEED CONTROL button ECONO COOL ECONO COOL button STOP START ON-TIMER button CLOCK SET button HR. button MIN. button (TIME SET button) OFF-TIMER button HR. CLOCK MIN. RESET 9 RESET button OB252C-1.qxp 02.4.25 11:27 AM Page 10 MSC-07RV - E3 MSC-09RV - E3 MSC-12RV - E3 MSC-07RV - E4 MSC-09RV - E4 MSC-12RV - E4 REMOTE CONTROLLER Signal transmitting section Operation display section PM AM OPERATE /STOP (ON /OFF)button TOO ON/OFF WARM TOO COOL TEMPERATURE buttons Open the front lid. CLOCK PM AM TOO ON/OFF WARM FAN SPEED CONTROL button TOO COOL FAN STOP VANE START I FEEL COOL HEAT /FAN OFF-TIMER button DRY ON-TIMER button / MODE HR. ECONO COOL MIN. OPERATION SELECT button ECONO COOL button HR. button MIN. button (TIME SET button) RESET CLOCK CLOCK SET button RESET button VANE CONTROL button 10 OB252C-1.qxp 02.4.25 11:27 AM 3 Page 11 SPECIFICATION Indoor model Function Indoor unit power supply Special remarks Fan motor Electrical data Capacity Air flow(High/Med.w/Low w ) Power outlet Running current Power input Power factor Starting current Fan motor current Model Winding resistance(at20:) Dimensions WOHOD Weight Air direction Sound level(High/Med.w/Loww ) Fan speed (High/Med.w/Low w) Fan speed regulator Thermistor RT11(at25:) Thermistor RT12(at25:) Outdoor model K /h A A W % A A " mm kg dB rpm k" k" kW Capacity R/h Dehumidification K /h Outdoor air flow A Power outlet A Running current W Power input A(kW) Auxiliary heater % Power factor A Starting current A Compressor motor current A Fan motor current Coefficient of performance(C.O.P) Model W Output Winding " resistance(at20:) Model Winding " resistance(at20:) mm Dimensions WOHOD kg Weight dB Sound level rpm Fan speed Fan speed regulator Refrigerant filling kg capacity(R22) cc Refrigerating oil (Model) Special remarks Fan motor Compressor Electrical data Capacity Outdoor unit power supply MSC-07RV - E4 Cooling Single phase 220-240V,50Hz 474/384w/294w 10 0.17 35 93.6-85.8 — 0.17 RC4V19-LA WHT-BLK 413 BLK-RED 334 850O278O191 9 5 36/31w/26 w 950/790w/640 w 3 10 10 MU-07RV - E4 Single phase 220-240V,50Hz 2.2 0.8 1620-1752 10 2.98-2.93 645-675 — 98.4-96.0 19 2.77-2.71 0.21-0.22 3.24-3.10 RH-130VGCT 650 C-R 4.18 C-S 5.76 RA6V23-FC WHT-BLK 353 BLK-RED 321 780o540o255 32 44-45 710-760 1 MSC-09RV - E4 Cooling Single phase 220-240V,50Hz 474/384w/294w 10 0.17 35 93.6-85.8 — 0.17 RC4V19-LA WHT-BLK 413 BLK-RED 334 850O278O191 9 5 36/31w /26 w 950/790w/640 w 3 10 10 MU-09RV - E4 Single phase 220-240V,50Hz 2.5 1.1 1620-1752 10 3.43-3.28 745-775 — 98.7-98.5 20 3.22-3.06 0.21-0.22 3.21-3.09 RH-140VGCT 700 C-R 4.03 C-S 5.71 RA6V23-FC WHT-BLK 353 BLK-RED 321 780o540o255 32 44-45 710-760 1 MSC-12RV - E4 Cooling Single phase 220-240V,50Hz 588/468w/360w 10 0.19 40 95.7-87.7 — 0.19 RC4V19-GA WHT-BLK 375 BLK-RED 294 850O278O191 10 5 39/34w/29 w 1020/850w/690 w 3 10 10 MU-12RV - E4 Single phase 220-240V,50Hz 3.5 1.6 1848-1980 10 6.01-6.16 1270-1350 — 96.1-91.3 35 5.72-5.84 0.29-0.33 2.67-2.52 RH-220VHAT 1050 C-R 2.13 C-S 3.91 RA6V33-DC WHT-BLK 301 BLK-RED 332 780o540o255 34 49 810-840 1 0.80 0.80 0.88 300 (MS56 ) NOTE: Test conditions are based on ISO 5151. Cooling : Indoor DB27°C WB19°C Outdoor DB35°C WB24°C Indoor-Outdoor piping length 5m w Reference value 11 300 (MS56 ) 520 (MS56) OB252C-1.qxp 02.4.25 11:27 AM Page 12 Indoor model Function Indoor unit power supply Special remarks Fan motor Electrical data Capacity Air flow(High/Med.w/Low w) Power outlet Running current Power input Power factor Starting current Fan motor current Model Winding resistance(at20:) Dimensions WOHOD Weight Air direction Sound level(High/Med.w/Loww ) Fan speed(High/Med.w/Loww ) Fan speed regulator Thermistor RT11(at25:) Thermistor RT12(at25:) Outdoor model K /h A A W % A A " mm kg dB rpm k" k" Outdoor unit power supply Special remarks Fan Compressor motor Electrical data Capacity kW Capacity R/h Dehumidification K /h Outdoor air flow A Power outlet A Running current W Power input A(kW) Auxiliary heater % Power factor A Starting current A Compressor motor current A Fan motor current Coefficient of performance(C.O.P) Model W Output Winding " resistance(at20:) Model Winding " resistance(at20:) mm Dimensions WOHOD kg Weight dB Sound level rpm Fan speed Fan speed regulator Refrigerant filling kg capacity(R22) cc Refrigerating oil (Model) k" Thermistor RT61(at0:) MSC-09RV - E4 MSC-12RV - E4 MSC-07RV - E4 Heating Heating Heating Cooling Cooling Cooling Single phase Single phase Single phase 220-240V,50Hz 220-240V,50Hz 220-240V,50Hz 474/384 w/294 w 504/414 w/336w 474/384 w/294w 504/414 w/336w 588/468 w/360w 642/516w /402w 10 10 10 0.17 0.17 0.19 35 35 40 93.6-85.8 93.6-85.8 95.7-87.7 — — — 0.17 0.17 0.19 RC4V19-LA RC4V19-LA RC4V19-GA WHT-BLK 413 WHT-BLK 413 WHT-BLK 375 BLK-RED 334 BLK-RED 334 BLK-RED 294 850O278O191 850O278O191 850O278O191 9 9 10 5 5 5 36/31w /26 w 35/30 w /26 w 36/31w /26 w 35/30w/26 w 39/34w/29 w 39/34w/29 w 950/790w/640 w 1000/850w /710w 950/790 w/640w 1000/850w /710w 1020/850 w/690w 1100/920 w/750w 3 3 3 10 10 10 10 10 10 MUH-07RV - E4 MUH-09RV - E4 MUH-12RV - E4 Single phase Single phase Single phase 220-240V,50Hz 220-240V,50Hz 220-240V,50Hz 4.0 2.2 2.5 3.1 3.4 2.5 — 0.8 1.1 — 1.6 — 1620-1752 1620-1752 1656-1758 10 10 10 5.76-5.91 3.13-3.03 3.93-3.83 4.13-3.93 5.56-5.71 2.98-2.88 675-715 845-885 885-905 1180-1260 1220-1310 645-685 — — — 96.3-92.4 98.0-98.3 97.4-95.9 97.7-96.3 96.5-91.9 98.4-99.1 25 25 35 5.47-5.59 3.92-3.71 2.92-2.81 3.72-3.61 5.27-5.39 2.77-2.66 0.21-0.22 0.21-0.22 0.29-0.32 3.17-2.96 3.37-3.30 3.10-2.93 2.84-2.72 2.79-2.62 3.68-3.47 RH-130VGCT RH-165VGCT RH-220VHAT 650 800 1050 C-R 4.18 C-R 3.30 C-R 2.13 C-S 5.76 C-S 5.80 C-S 3.91 RA6V23-FB RA6V23-FB RA6V33-DB WHT-BLK 353 WHT-BLK 353 WHT-BLK 301 BLK-RED 321 BLK-RED 321 BLK-RED 332 788o540o255 780o540o255 780o540o255 33 33 38 47 47 49 710-760 710-760 810-840 1 1 1 0.85 300 (MS56) 33.18 NOTE: Test conditions are based on ISO 5151. Cooling : Indoor DB27°C WB19°C Outdoor DB35°C WB24°C Indoor-Outdoor piping length 5m 0.85 1.19 300 (MS56) 33.18 520 (MS56) 33.18 Heating : Indoor Outdoor w Reference value 12 DB20°C DB 7°C / WB 6°C OB252C-1.qxp 02.4.25 11:27 AM 4 Page 13 WIRING DIAGRAM MSC-07RV - E4 MSC-09RV - E4 MSC-12RV - E4 MODELS WIRING DIAGRAM INDOOR UNIT TO OUTDOOR TB UNIT L CONNECTING BRN FOR 3 MUH OR MXZ TYPE N 12V FOR MU OR MUX TYPE 12V 2 BRN TAB12 RED CN201 3 2 1 CN202 2 1 BLU BLU WHT 1 BLK TRANS F11 RT12 CN 111 RT11 CN 121 C11 SR141 BLK GRY YLW BRN WHT RED 3 1 3 5 1 2 3 MF 4 5 6 CN211 ELECTRONIC CONTROL P.C. BOARD 5 GRN CIRCUIT BREAKER GRN/YLW PE SYMBOL NR11 CN 101 LD103 CN 151 POWER SUPPLY CORD ~/N 220-240V 50Hz T11 CN 112 NAME MV 5 POWER MONITOR, RECEIVER P.C.BOARD REMOTE CONTROLLER NAME SYMBOL SYMBOL NAME C11 INDOOR FAN CAPACITOR NR11 VARISTOR TB TERMINAL BLOCK F11 FUSE(3.15A) RT11 ROOM TEMPERATURE THERMISTOR T11 TRANSFORMER MF INDOOR FAN MOTOR(INNER FUSE) RT12 INDOOR COIL THERMISTOR MV VANE MOTOR SR141 SOLID STATE RELAY NOTE:1. About the outdoor side 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 13 SG79J412H01 OB252C-1.qxp 02.4.25 11:27 AM MU-07RV - E4 MU-09RV - E4 MU-12RV - E4 OUTDOOR UNIT Page 14 MODELS WIRING DIAGRAM TB2 2 FROM INDOOR UNIT CONNECTING 12V WHT 1 52C BLK BRN TB1 CIRCUIT BREAKER 52C L WHT BRN NO COM N POWER SUPPLY ~/N 220-240V 50Hz PE NAME SYMBOL COMPRESSOR CAPACITOR C2 OUTDOOR FAN CAPACITOR DSAR C WHT BLU GRN/YLW C1 C2 RED S BLK WHT 1 WHT BLU 2 BLK RED 3 RED NAME SYMBOL C1 DSAR MC COMPRESSOR(INNER PROTECTOR) MF OUTDOOR FAN MOTOR(INNER FUSE) MC R MF SYMBOL NAME 52C COMPRESSOR CONTACTOR TB1,TB2 TERMINAL BLOCK SURGE ABSORBER NOTE: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 MODELS WIRING DIAGRAM CN721 NR61 SR61 T61 N BLU TAB20 CN711 WHT 1 BLK 2 RED 3 C65 52C PE 4 GRN/YLW NAME SYMBOL MF CN661 SR62 BLK CIRCUIT BREAKER TB1 BRN L BRN POWER SUPPLY ~/N 220-240V 50Hz 1 2 3 F61 N RED CN730 TB2 3 FROM INDOOR UNIT CONNECTING 12V 21S4 RT61 DSAR MUH-07RV - E4 MUH-09RV - E4 MUH-12RV - E4 OUTDOOR UNIT VG79B132H01 3 BLU DEICER P.C.BOARD C WHT C1 RED MC S R BLK NAME SYMBOL NAME SYMBOL OUTDOOR FAN MOTOR(INNER FUSE) TB1,TB2 TERMINAL BLOCK C1 COMPRESSOR CAPACITOR MF C65 OUTDOOR FAN CAPACITOR NR61 VARISTOR 21S4 R.V. COIL SURGE ABSORBER RT61 DEFROST THERMISTOR 52C COMPRESSOR CONTACTOR DSAR F61 FUSE(2A) MC COMPRESSOR(INNER PROTECTOR) SR61, SR62 SOLID STATE RELAY T61 TRANSFORMER NOTE: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 14 SG79B111H01 OB252C-1.qxp 02.4.25 11:27 AM 5 Page 15 REFRIGERANT SYSTEM DIAGRAM Unit:mm MUH-07RV - E3 MUH-07RV - E4 MUH-09RV - E3 MUH-09RV - E4 MSC-07RV - E3 MSC-07RV - E4 MSC-09RV - E3 MSC-09RV - E4 INDOOR UNIT (with heat insulator) Indoor heat exchanger Indoor coil thermistor RT12 OUTDOOR UNIT Refrigerant pipe [ 9.52 Flared connection 4-way valve Muffler Defrost thermistor RT61 Stop valve (with service port) Outdoor heat exchanger Strainer Room temperature thermistor RT11 Capillary tube [3.0x[1.4x800 (2 pcs) Compressor Capillary tube [3.0x[1.6x600(MUH-07) [3.0x[1.6x400(MUH-09) Flared connection Check valve R.V. coil heating ON cooling OFF Strainer Capillary tube [3.0x[1.4x600(MUH-07) [3.0x[1.4x550(MUH-09) Stop valve Refrigerant pipe [6.35 (with heat insulator) Refrigerant flow in cooling Refrigerant flow in heating Unit:mm MSC-12RV - E3 MSC-12RV - INDOOR UNIT Indoor heat exchanger Indoor coil thermistor RT12 MUH-12RV - E4 Refrigerant pipe [12.7 (with heat insulator) E3 MUH-12RV - E4 OUTDOOR UNIT 4-way valve Muffler Stop valve (with service port) Flared connection Strainer Defrost thermistor RT61 Room temperature thermistor RT11 Outdoor heat exchanger Capillary tube [3.0x[1.4x500(2pcs) Compressor Capillary tube [3.0x[1.8x300 Flared connection Strainer Capillary tube [3.0x[1.6x700 R.V. coil heating ON cooling OFF Stop valve Refrigerant flow in cooling Refrigerant pipe [6.35 (with heat insulator) Check valve 15 Refrigerant flow in heating OB252C-1.qxp 6 02.4.25 11:27 AM Page 16 MICROPROCESSOR CONTROL MSC-07RV - E4 MU-07RV - E4 MUH-07RV - E4 MSC-09RV - E4 MU-09RV - E4 MUH-09RV - E4 MSC-12RV - E4 MU-12RV - E4 MUH-12RV - E4 6-1. 11-1. COOL ( ) OPERATION 1. Indoor fan speed control Indoor fan operates continuously at the set speed by FAN SPEED CONTROL button regardless of thermostat’s OFF-ON. In Auto the fan speed is as follows. MSC-07RV MSC-09RV MSC-12RV - MSC-07RV - E3 MSC-09RV - E3 E1 E2 MSC-12RV - E3 Fan speed Initial temperature difference Room temperature minus set temperature : 2 degrees or more································High Room temperature minus set temperature : Between 1 and 2 degrees····················Med. Room temperature minus set temperature : less than 1 degree································Low MSC-07RV MSC-09RV MSC-12RV - E1 E1 MSC-07RV MSC-09RV MSC-12RV - E2 E2 2 deg. 1 deg. 1.7 deg. 4 deg. E4 E4 E4 Fan speed Initial temperature difference Room temperature minus set temperature : 1.7 degrees or more·····························High Room temperature minus set temperature : Between 1 and 1.7 degrees·················Med. Room temperature minus set temperature : less than 1 degree································Low 7 Difference between room temperature and set temperature during operation Difference between room temperature and set temperature during operation 3 deg. 1 deg. 1.7 deg. TROUBLESHOOTING 7-1. Trouble criterion of main parts MSC-07RV - E4 MU-07RV - E4 MUH-07RV - E4 MSC-09RV - E4 MU-09RV - E4 MUH-09RV - E4 MSC-12RV - E4 MU-12RV - E4 MUH-12RV - E4 Check method and criterion Part name INNER FUSE 136I3 CUT OFF Measure the resistance between the terminals with a tester. (Coil wiring temperature10°C ~ 30°C) Motor part Indoor fan motor(MF) Figure Color of lead wire Normal MSC-07/09RV- E4 Abnormal MSC-12RV- E4 WHT-BLK 396 ~ 430Ω 396 ~ 430Ω BLK-RED 320 ~ 348Ω 320 ~ 348Ω WHT RED FUSE Open or short-circuit BLK YLW GRY BRN Measure the resistance between the terminals with a tester. (Coil wiring temperature –10°C ~ 40°C) Outdoor fan motor(MF) INNER FUSE 163I3 CUT OFF Color of lead wire MAIN Normal MU-07/09RV- E4 MU-12RV- E4 WHT-BLK 311 ~ 381 Ω 265 ~ 325Ω BLK-RED 283 ~ 347Ω 292 ~ 359Ω Abnormal AUX. FUSE Open or short-circuit BLK Color of lead wire Normal MUH-07/09RV- E4 MUH-12RV- E4 WHT-BLK 311 ~ 381 Ω 265 ~ 325Ω BLK-RED 283 ~ 347 Ω 292 ~ 359 Ω 16 Abnormal Open or short-circuit RED WHT OB252C-1.qxp 02.4.25 11:27 AM Page 17 When OPERATION INDICATOR lamp flashes 3-time. Indoor fan motor doesn’t operate. A Check of indoor fan motor Turn OFF the power supply. Check connector CN211 visually. Yes No Is soldered point of the connector correctly soldered? Are lead wires connected? No Yes Re-connect the lead wires. Re-solder it. Disconnect lead wires from connector CN211 on indoor electronic control P.C. board. Measure resistance between lead wires No.1 and No.5 and then No.3 and No.5. Is resistance 0 (short circuit) or ∞ (open circuit)? No (others) Yes ( 0 or ∞ ) Turn ON the power supply. Stop it if the unit operate. Insert screwdriver into air outlet to rotate indoor fan motor slowly for 1 revolution or over, and measure voltage No.2(+) and No.3(-) on CN121. No Repair or replace the indoor fan motor. Does voltage repeat 0V DC and 5V DC? Yes Replace the indoor electronic control P.C. board. Indoor unit operates by pressing the EMERGENCY OPERATION switch, but doesn’t operate with the remote controller. B Check of remote controller and receiver P.C. board wCheck the remote controller is exclusive for this air conditioner. Switch on the remote controller. No Is LCD display on the remote controller displayed? Replace the batteries. (not clear) Yes Remove batteries, then set them back and press the RESET button. Check if the unit operates with the remote controller. Does the unit operate with the remote controller? No Turn on a radio to AM and press switch on the remote controller. Yes No Is noise heard from radio? Replace the remote controller. Ok Yes Are there any fluorescent lights of inverter or rapid-start type within the range of 1m? No MSC-07/09/12RV- Yes MSC-07/09/12RV- E1 • Re-install the unit away from lights. • Attach a filter on receiving part. , E2 , E3 E4 Measure the voltage between receiver P.C. board connector CN302 No.3(–)and No.5(+) when the remote controller button is pressed. Yes Is the voltage approx. 4V DC? No(5V or 0V DC) Replace the receiver P.C. board. 17 Replace the indoor electronic control P.C. board. OB252C-1.qxp 02.4.25 11:27 AM Page 18 The unit doesn’t operate with the remote controller. Also, the OPERATION INDICATOR lamp doesn’t light up by pressing the EMERGENCY OPERATION switch. C Check of indoor electronic control P.C. board Check the both “parts side” and “pattern side” of indoor electronic control P.C. board visually. Turn OFF the power supply. Remove indoor fan motor connector CN211 and vane motor connector CN151 from the indoor electronic control P.C. board and turn ON the power supply. Does the unit operate with the remote controller? No Does the OPERATION INDICATOR lamp light up by pressing the EMERGENCY OPERATION switch? Yes Turn OFF the power supply. Replace the vane motor. Turn OFF the power supply. Replace the fuse. Yes Yes Is winding resistance of vane motor 0 "? No Be sure to check both resistances. Is winding resistance of fan motor 0 "? Is fuse(F11) blown? Replace the indoor electronic control P.C. board. Be sure to check both fuse and varistor in any case. Is varistor(NR11) burnt? No Yes Yes Replace the fan motor. No Replace the varistor. 18 No OB252C-1.qxp 02.4.25 11:27 AM Page 19 Compressor and / or outdoor fan motor doesn’t operate. D Check of outdoor unit <MU-07/09/12RV> Start Is the switch SW2-2 on the indoor electronic control P.C. board set to MU type? No Change the switch SW-2-2 on the indoor electronic control P.C. board to MU type. Yes Operate the unit in COOL mode by pressing the EMERGENCY OPERATION switch. 3-minute time delay works. Test run operation operates for 30 minutes. Compressor doesn't operate. Is there 220-240V AC Yes between 1–2 on the outdoor terminal block (TB2)? No Check the indoor electronic control P.C. board, and rectify the indoor and outdoor connecting wire. Is there 220-240V AC between L–N on the outdoor terminal block (TB1)? No Check the power supply, and rectify the connecting wire. Yes Is there 220-240V AC between COM on the compressor contactor (52C) and N on the outdoor terminal block (TB1)? Yes No Replace the compressor contactor (52C). Check the compressor and compressor contactor, and rectify the connecting wire. Outdoor fan motor doesn't operate. MU-07/09/12RV- E1 , E2 , E3 Is fuse "F" (2A) blown? No Is there 12V DC between 1–2 on the outdoor terminal block (TB2)? No Check the indoor electronic control P.C. board, and rectify the indoor and outdoor connecting wire. Yes Yes Replace the fuse "F" (2A). Is there 220-240V AC between L–N No on the outdoor terminal block (TB1)? Yes Is there 220-240V AC between COM No on the compressor contactor (52C) and N on the outdoor terminal block(TB1)? Yes Check the outdoor fan motor and outdoor fan capacitor, and rectify the connecting wire. 19 Check the power supply, and rectify the connecting wire. Replace the compressor contactor (52C). OB252C-1.qxp 02.4.25 11:27 AM Page 20 Compressor and / or outdoor fan motor doesn’t operate. D Check of outdoor unit <MUH-07/09/12RV> Start Is the switch SW2-2 on the No indoor electronic control P.C. board set to MUH type? Change the switch SW-2-2 on the indoor electronic control P.C. board to MUH type. Yes Operate the unit in COOL or HEAT mode by pressing the EMERGENCY OPERATION switch. 3-minute time delay works. Test run operation operates for 30 minutes. Compressor doesn't operate. Rectify the indoor and outdoor connecting wire. No Is there 5V DC between J8 – –J9 + (MUH-07/09/12RV- E1 , E2 , E3 )/ J205 + –J101– (MUH-07/09/12RV- E4 ) on the deicer P.C. board? Yes No Is there 220-240V AC between 4 on the compressor contactor (52C) and TAB20 on the deicer P.C. board? Yes No Yes Replace the deicer P.C. board. Is there 220-240V AC between 3 on the compressor contactor (52C) and N on the outdoor terminal block (TB1)? No Is there 220-240V AC between L–N on the outdoor terminal block (TB1)? Rectify the connecting wire. Replace the deicer P.C. board. Yes Check the compressor and compressor capacitor, and rectify the connecting wire. Outdoor fan motor doesn't operate. Is there 5V DC between J8 – –J9 + (MUH-07/09/12RV- E1 , E2 , E3 )/ J205 + –J101– (MUH-07/09/12RV- E4 ) on the deicer P.C. board? Yes Check the outdoor fan motor and rectify the connecting wire. Rectify the indoor and outdoor connecting wire. No No Is there 220-240V AC between 4 on the compressor contactor (52C) and TAB 20 on the deicer P.C. board? Yes Replace the deicer P.C. board. 20 No Is there 220-240V AC between L–N on the outdoor terminal block (TB1)? Yes Rectify the connecting wire. OB252C-1.qxp 02.4.25 11:27 AM Page 21 E How to check mis-wiring and serial signal error Outdoor unit does not work. w 1 Set the switch(SW2-2) on indoor electronic control P.C. board to MU or MUX type, when the outdoor unit is MU or MUX type. If the setting is MUH or MXZ type, the unit does not work. Start w 2 Short circuit of JPG and JPS on the indoor electronic control P.C. board enables self -check to be displayed in 3 seconds. Turn OFF the power supply(indoor/outdoor unit). Set the switch(SW2-2) on the indoor electronic control P.C. board to MU or MUX type. w1 No Is the outdoor unit "MUH or MXZ" type? Yes •Turn ON the power supply(indoor/outdoor unit). •Press once EMERGENCY OPERATION switch. Yes Serial signal error is indicated. (0.5-sec. ON, 2.5-sec. OFF) 3 min. later, what self-check result is displayed on OPERATION INDICATOR lamp on indoor unit? w 2 Does the unit operate? Mis-wiring is indicated. (0.5-sec. ON, 0.5-sec. OFF) Yes Make them sure. No Refer to the "Instruction of troubleshooting." Is this mis-wiring, poor contact, or disconnection of wire? No 1. Turn OFF the power supply(indoor/outdoor unit) and disconnect indoor and outdoor connecting wire on indoor side. 2. Short-circuit between indoor terminal block N and 3. 3. Turn ON the power supply(indoor unit) and press once EMERGENCY OPERATION switch. Is there 20V DC between both ends of R132 on indoor electronic control P.C. board ? ( By tester, the stylus is between 0 ~ 20V. ) No Replace the indoor electronic control P.C. board. No Refer to T Check of mis-wiring or mis-piping. No Check the outdoor power supply, power supply cord and connection. Yes •Turn OFF the power supply(indoor unit). •Connect ON indoor and outdoor connecting wire. Turn ON the power supply(outdoor unit). Is the outdoor unit "MUH" type? Yes Is there 220-240V AC between outdoor terminal block L-N (TB1)? Yes Is there 5V DC between J8 - –J9 + (MUH-07/09/12RV- E1 , E2 , E3 )/ J205 + –J101 - (MUH-07/09/12RV- E4 ) on the deicer P.C. board? Yes No Replace the deicer P.C. board. Turn ON the power supply(indoor unit). During EMERGENCY OPERATION, is there 10V DC between both ends of R601? (By tester, the stylus is between 5 ~10V) Yes Replace the deicer P.C. board. 21 No Make the wiring between CN730 on the deicer P.C. board and outdoor terminal block correct. Ok OB252C-1.qxp 02.4.25 11:27 AM Page 22 Compressor and / or outdoor fan motor doesn’t stop. V Check of outdoor unit <MU-07/09/12RV> Start Turn OFF the power supply. After 1 minute, turn ON power supply again. Does compressor or outdoor fan motor stop? No Yes Is there 12V DC between 1–2 on the outdoor terminal block (TB2)? Yes No Is there 220-240V AC between COM on Yes the compressor contactor (52C) and N on the outdoor terminal block (TB1)? No Replace the indoor electoronic control P.C. board. Ok Rectify the connecting wire. Compressor and / or outdoor fan motor doesn’t stop. V Check of outdoor unit <MUH-07/09/12RV> Start Turn OFF the power supply. After 1 minute, turn ON power supply again. Does compressor stop? No Yes Ok Is there 220-240V AC between 3 on the compressor contactor (52C) and N on the outdoor terminal block (TB1)? Yes Replace the deicer P.C. board. Does outdoor fan motor stop? No Replace the deicer P.C. board. Yes Ok 22 No Rectify the connecting wire. Replace the compressor contactor(52C). OB252C-1.qxp 02.4.25 11:27 AM Page 23 When OPERATION INDICATOR lamp flashes 6-time. Thermistors in the outdoor unit are abnormal. W Check of outdoor thermistor <MUH-07/09/12RV> Start Turn OFF the power supply. Replace the deicer P.C. board. Defrost thermistor (RT61) Measure resistance between CN 661 1 and 2. Does the resistance of thermistor have the characteristics ? Yes No Re-connect CN661. Turn ON the power supply and press the EMERGENCY OPERATION switch. No Does the unit operate 10 minutes or more? Yes Ok ❈ Replace the thermistor. ❈ Defective contact of the connector is considered. Unit operates COOL mode even if it is set to HEAT mode. w First, measure the resistance of R.V. coil to confirm it is disconnected or is not short-circuit. X Check of R.V. coil <MUH-07/09/12RV> Turn ON the power supply and operate the indoor unit in HEAT mode by pressing the EMERGENCY OPERATION switch. After 3 minutes, does the unit operate in COOL mode? No Ok Yes Is there 220-240V AC between CN7211 – 2 on the deicer P.C. board? Yes Replace the R.V. coil. 23 No Replace the deicer P.C. board OB252C-1.qxp 02.4.25 11:27 AM Page 24 Unit operates HEAT mode even if it is set to COOL mode. w First, measure the resistance of R.V. coil to confirm it is disconnected or is not short-circuit. X Check of R.V. coil <MUH-07/09/12RV> Turn ON the power supply and operate the indoor unit in COOL mode by pressing the EMERGENCY OPERATION switch. Yes After 3 minutes, does the unit operate in HEAT mode? No Ok Yes Is there 220-240V AC between CN7211 – 2 on the deicer P.C. board? No Replace the R.V. coil. Yes Replace the deicer P.C. board. 24 OB252C-1.qxp 02.4.25 11:28 AM Page 25 TEST POINT DIAGRAM AND VOLTAGE MSC-07RV - E4 MSC-09RV - E4 MSC-12RV - E4 Indoor electronic control P.C. board } Power supply input 220-240V AC Fuse(F11) 250V AC 3.15A } Fan motor power supply Varistor (NR11) CN111 Room temperature thermistor (RT11) CN112 Indoor coil thermistor (RT12) CN201 } 12V DC + CN121 Timer short mode point (JPS, JPG) JPGND J205 Emergency operation switch + Vane motor power supply (CN151) CN302 R132 SW2 (Refer to page 121 of OB227 REVISED EDITION-B.) 1 sets the Auto restart function ON/ OFF. 2 switches over MU and MUX type/ MUH and MXZ type. Resistance(k") } 5V DC 0~20V DC P.C.board 25 OB252C-1.qxp 02.4.25 11:28 AM Page 26 MUH-07RV - E4 MUH-09RV - E4 MUH-12RV - E4 Outdoor deicer P.C. board CN721 CN711 Outdoor fan motor R.V. coil 220-240V AC 220-240V AC } } } Power supply input 220-240V AC NR61 Varistor F61 Fuse 2A/250V + -- } R601 5~10VDC Defrost interval time short pin (JPDS, JPSG) (Refer to page 5.) } CN661 1-2 Defrost thermistor RT61 5V DC J205 + J101 -12V DC J204 + J101 -- 26 } Jumper wire for change in defrost setting (JRF,JRG) (Refer to page 5.) OB252C-1.qxp 02.4.25 11:28 AM 8 Page 27 PARTS LIST MSC-07RV - E1 (WH) MSC-07RV - E2 (WH) MSC-07RV - E3 (WH) MSC-07RV - E4 (WH) MSC-09RV - E1 (WH) MSC-09RV - E2 (WH) MSC-09RV - E3 (WH) MSC-09RV - E4 (WH) MSC-12RV - E1 (WH) MSC-12RV - E2 (WH) MSC-12RV - E3 (WH) MSC-12RV - E4 (WH) 8-2. ACCESSORY AND REMOTE CONTROLLER 8-1. INDOOR UNIT STRUCTURAL PARTS 1 (W1) 12 11 2 13 10 3 9 (W2) 4 8 (W2) 5 6 MSC-07RV MSC-09RV MSC-12RV - 7 (W1) (W1) These figures show about MSC-12RV. MSC-07RV MSC-09RV MSC-12RV - E2 E2 E2 E3 E4 E3 E4 E3 E4 (W2) Refer to OB227 REVISED EDITION-B 16. OPTIONAL PARTS. (See page 184 ) 8-1. INDOOR UNIT STRUCTURAL PARTS Q'ty/unit MSC-09RV- Symbol No. Part No. E02 E02 E02 E02 E02 E02 E02 E02 E02 409 411 409 424 409 424 408 408 410 Part Name 234 234 976 000 067 010 142 100 100 BOX(WH) 1 BOX(WH) 2 CORNER BOX (LEFT) 3 FRONT PANEL(WH) 4 SCREW CAP(WH) 5 GRILLE(WH) 6 CATCH AIR FILTER 7 AIR FILTER 8 DEODORIZING FILTER 9 AIR CLEANING FILTER 10 E02 409 975 CORNER BOX (RIGHT) 11 E02 408 970 INSTALLATION PLATE in Wiring MSC-07RVE1 E2 E3 E4 E1 E2 E3 MSC-12RV- E4 E1 Diagram (WH) (WH) (WH) (WH) (WH) (WH) (WH) (WH) (WH) 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 2 2 2 2 2 2 2 2 2 1 1 1 1 1 1 1 1 1 3 3 3 3 3 3 3 3 3 2 2 2 2 2 2 2 2 2 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 E2 E3 E4 (WH) (WH) (WH) 1 1 1 2 1 3 1 1 1 2 1 3 1 1 1 Including No.4,5,6 2 2PCS/SET 1 3 3PCS/SET 2 1 1 1 1 2 1 1 1 1 2 1 MAC-1800DF 1 MAC-1300FT 1 1 1 1 1 1 8-2. ACCESSORY AND REMOTE CONTROLLER E02 E02 E02 13 E02 12 141 527 504 583 083 083 426 426 REMOTE CONTROLLER HOLDER REMOTE CONTROLLER HOLDER REMOTE CONTROLLER REMOTE CONTROLLER 1 1 1 1 1 1 1 1 1 1 1 1 27 1 1 1 1 1 Remarks OB252C-1.qxp 02.4.25 11:28 AM Page 28 MSC-07RV - E1 (WH) MSC-07RV - E2 (WH) MSC-07RV - E3 (WH) MSC-07RV - E4 (WH) MSC-09RV - E1 (WH) MSC-09RV - E2 (WH) MSC-09RV - E3 (WH) MSC-09RV - E4 (WH) MSC-12RV - E1 (WH) MSC-12RV - E2 (WH) MSC-12RV - E3 (WH) MSC-12RV - E4 (WH) 8-4. INDOOR UNIT HEAT EXCHANGER 8-3. INDOOR UNIT ELECTRICAL PARTS AND FUNCTIONAL PARTS 18 (W) 17 SLEEVE BEARING 1 16 14 15 13 2 ROOM TEMPERATURE THERMISTOR 3 12 11 19 4 10 20 5 FUSE 6 VARISTOR 7 8 (W)These figures show about MSC-12RV. 9 8-3. INDOOR UNIT ELECTRICAL PARTS AND FUNCTIONAL PARTS No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 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 E02 001 408 409 409 409 127 336 408 424 504 583 691 425 505 584 692 426 506 693 408 693 408 151 665 424 691 151 665 408 408 408 504 702 235 040 041 382 385 034 452 452 452 452 452 452 452 452 452 452 452 303 303 308 300 300 375 375 505 505 307 302 509 Part Name Symbol in Wiring Diagram SLEEVE BEARING DRAIN HOSE NOZZLE (WH) VANE UPPER (WH) VANE LOWER (WH) F11 FUSE NR11 VARISTOR VANE MOTOR SUPPORT SET ELECTRONIC CONTROL P.C.BOARD ELECTRONIC CONTROL P.C.BOARD ELECTRONIC CONTROL P.C.BOARD ELECTRONIC CONTROL P.C.BOARD ELECTRONIC CONTROL P.C.BOARD ELECTRONIC CONTROL P.C.BOARD ELECTRONIC CONTROL P.C.BOARD ELECTRONIC CONTROL P.C.BOARD ELECTRONIC CONTROL P.C.BOARD ELECTRONIC CONTROL P.C.BOARD ELECTRONIC CONTROL P.C.BOARD MV VANE MOTOR MV VANE MOTOR ROOM TEMPERATURE THERMISTOR RT11 MF INDOOR FAN MOTOR MF INDOOR FAN MOTOR TB TERMINAL BLOCK TB TERMINAL BLOCK FAN MOTOR RUBBER MOUNT FAN MOTOR RUBBER MOUNT RT12 INDOOR COIL THERMISTOR LINE FLOW FAN BEARING MOUNT Q'ty/unit MSC-07RV E1 E2 E3 MSC-09RV E4 E1 E2 E3 MSC-12RV E4 E1 E2 E3 Remarks E4 (WH) (WH) (WH) (WH) (WH) (WH) (WH) (WH) (WH) (WH) (WH) (WH) 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 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 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 2 2 2 1 2 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 2 2 2 1 2 1 1 1 1 1 1 1 1 1 2 1 1 1 1 1 1 1 1 1 1 2 2 1 1 1 1 1 1 1 1 1 2 1 1 1 1 1 1 1 3.15A AUTO RESTART AUTO RESTART AUTO RESTART AUTO RESTART AUTO RESTART AUTO RESTART AUTO RESTART AUTO RESTART AUTO RESTART AUTO RESTART AUTO RESTART RC4V19RC4V19- 2PCS/SET 2PCS/SET 8-4. INDOOR UNIT HEAT EXCHANGER E02 18 E02 E02 19 E02 E02 20 E02 408 410 515 151 155 151 620 620 620 666 666 667 INDOOR HEAT EXCHANGER INDOOR HEAT EXCHANGER INDOOR HEAT EXCHANGER UNION(GAS) UNION(GAS) UNION(LIQUID) 1 1 1 1 1 28 1 1 1 1 1 1 1 1 1 1 1 1 1 1 {9.52 {12.7 {6.35 OB252C-1.qxp 02.4.25 11:28 AM Page 29 MU-07RV - E1 MU-07RV - E2 MU-07RV - E3 MU-07RV - E4 MU-09RV - E1 MU-09RV - E2 MU-09RV - E3 MU-09RV - E4 MU-12RV - E1 MU-12RV - E2 MU-12RV - E3 MU-12RV - E4 8-5. OUTDOOR UNIT STRUCTURAL PARTS 12 11 10 9 1 2 3 5 4 6 7 8 Part number that is circled is not shown in the illustration. No. 1 2 3 4 5 6 7 8 9 10 11 12 13 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 336 336 336 437 589 438 408 141 594 336 075 339 340 339 340 339 336 339 440 336 336 339 412 630 232 521 900 900 900 900 900 900 506 506 290 290 661 661 662 245 233 233 515 297 936 936 Part name OUTDOOR HEAT EXCHANGER CABINET GRILLE(OUT) COMPRESSOR COMPRESSOR COMPRESSOR COMPRESSOR COMPRESSOR COMPRESSOR COMPRESSOR RUBBER SET COMPRESSOR RUBBER SET BASE BASE STOP VALVE(GAS) STOP VALVE(GAS) STOP VALVE(LIQUID) SERVICE PANEL BACK PANEL BACK PANEL MOTOR SUPPORT TOP PANEL CAPILLARY TUBE CAPILLARY TUBE Symbol in Wiring Diagram MC MC MC MC MC MC Q'ty/unit MU-09RV- MU-07RV- MU-12RV- Remarks E1 E2 E3 E4 E1 E2 E3 E4 E1 E2 E3 E4 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 3 3 RH-135VGCT RH-130VGCT RH-145VGCT RH-140VGCT RH-231VHAT 1 RH-220VHAT 3RUBBERS/SET 3 3RUBBERS/SET 1 1 1 1 1 1 1 1 1 1 1 1 1 {9.52 1 {12.7 1 {6.35 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 {3.0x{1.4x600 1 {3.0x{1.6x600 1 1 1 1 1 1 3 3 3 3 3 3 3 3 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 1 1 1 1 1 1 1 1 1 1 1 1 1 29 OB252C-1.qxp 02.4.25 11:28 AM Page 30 MU-07RV - E1 MU-07RV - E2 MU-07RV - E3 MU-07RV - E4 MU-09RV - E1 MU-09RV - E2 MU-09RV - E3 MU-09RV - E4 MU-12RV - E1 MU-12RV - E2 MU-12RV - E3 MU-12RV - E4 8-7. REMOTE CONTROLLER 8-6. OUTDOOR UNIT ELECTRICAL PARTS AND FUNCTIONAL PARTS MU-07RV MU-09RV MU-12RV - E1 E2 E3 E1 E2 E3 E1 E2 E3 6 10 5 2 1 3 MU-07RV MU-09RV MU-12RV - 4 E4 E4 E4 8-6. OUTDOOR UNIT ELECTRICAL PARTS AND FUNCTIONAL PARTS Part numbers that are circled are not shown in the illustration. No. 1 2 3 4 5 6 7 8 9 Part No. E02 E02 E02 E02 E02 E02 E02 E02 E02 E02 E02 E02 E02 E02 E02 E02 E02 E02 E02 E02 336 665 437 676 439 677 095 661 664 085 694 079 696 437 466 438 001 466 095 128 501 501 301 301 301 301 350 351 351 353 353 353 353 374 375 374 340 340 382 383 Part name Symbol in Wiring Diagram PROPELLER FAN PROPELLER FAN OUTDOOR FAN MOTOR MF OUTDOOR FAN MOTOR MF OUTDOOR FAN MOTOR MF OUTDOOR FAN MOTOR MF OUTDOOR FAN CAPACITOR C2 OUTDOOR FAN CAPACITOR C2 OUTDOOR FAN CAPACITOR C2 COMPRESSOR CAPACITOR C1 COMPRESSOR CAPACITOR C1 COMPRESSOR CAPACITOR C1 COMPRESSOR CAPACITOR C1 TERMINAL BLOCK TB1 TERMINAL BLOCK TB1 TERMINAL BLOCK TB2 COMPRESSOR CONTACTOR 52C COMPRESSOR CONTACTOR 52C FUSE F SURGE ABSORBER DSAR Q'ty/unit MU-09RV- MU-07RVE1 E2 E3 1 1 1 E4 E1 E2 E3 1 1 1 1 1 1 1 MU-12RVE4 E1 E2 E3 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 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 8-7. REMOTE CONTROLLER 10 E02 408 426 REMOTE CONTROLLER Remarks E4 1 30 1 1 1 1 RA6V23RA6V23RA6V33RA6V331.5+ /440V AC 1.5+ /440V AC 2.0+ /440V AC 25+ /440V AC 25+ /440V AC 30+ /440V AC 30+ /440V AC 3P 3P 2P 1 250V/ 2A 1 OB252C-2.qxp 02.4.25 11:28 AM MUH-07RV - E1 MUH-09RV - E1 MUH-12RV - E1 8-8. OUTDOOR Page 31 MUH-07RV - E2 MUH-07RV - E3 MUH-07RV - E4 MUH-09RV - E2 MUH-09RV - E3 MUH-09RV - E4 MUH-12RV - E2 MUH-12RV - E3 MUH-12RV - E4 UNIT STRUCTURAL PARTS 13 12 1 11 2 3 10 4 Part numbers that are circled are not shown in the illustration. No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 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 E02 E02 440 442 336 336 164 589 128 593 141 594 336 075 339 340 339 340 139 444 336 440 336 442 336 159 156 339 441 412 134 134 442 154 630 630 232 521 900 900 900 900 900 900 506 506 290 290 661 661 662 961 245 233 515 515 297 936 936 936 936 936 937 936 936 642 Part name OUTDOOR HEAT EXCHANGER OUTDOOR HEAT EXCHANGER CABINET GRILLE(OUT) COMPRESSOR COMPRESSOR COMPRESSOR COMPRESSOR COMPRESSOR COMPRESSOR COMPRESSOR RUBBER SET COMPRESSOR RUBBER SET BASE BASE STOP VALVE(GAS) STOP VALVE(GAS) STOP VALVE(LIQUID) 4-WAY VALVE SERVICE PANEL BACK PANEL MOTOR SUPPORT MOTOR SUPPORT TOP PANEL CAPILLARY TUBE CAPILLARY TUBE CAPILLARY TUBE CAPILLARY TUBE CAPILLARY TUBE CAPILLARY TUBE CAPILLARY TUBE CAPILLARY TUBE CHECK VALVE Symbol in Wiring Diagram MC MC MC MC MC MC 5 6 7 8 Q'ty/unit MUH-09RV- MUH-07RVE1 E2 E3 E4 E1 E2 E3 E4 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 9 MUH-12RV- E1 E2 E3 E4 1 1 1 1 1 1 1 1 1 1 1 1 3 3 3 RH-135VGHT RH-130VGCT RH-174VGHT RH-165VGCT RH-231VHAT 1 RH-220VHAT 3RUBBERS/SET 3 3RUBBERS/SET 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 {9.52 1 {12.7 1 {6.35 1 1 1 1 1 1 1 1 1 1 1 2 2 2 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 3 3 3 3 1 1 1 1 1 1 1 1 1 1 1 1 1 1 2 1 1 1 31 1 1 1 1 1 1 2 1 1 1 1 1 1 1 1 1 1 1 1 1 1 2 1 2 1 1 1 1 1 1 3 3 1 1 1 3 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 2 1 2 3 1 1 1 1 1 1 2 1 1 1 1 1 1 2 1 1 1 1 1 1 1 1 1 1 1 1 Remarks {3.0x{1.4x800 2 {3.0x{1.4x500 {3.0x{1.4x600 {3.0x{1.4x550 {3.0x{1.6x600 {3.0x{1.6x400 1 {3.0x{1.6x700 1 {3.0x{1.8x300 1 OB252C-2.qxp 02.4.25 11:28 AM Page 32 MUH-07RV - E1 MUH-07RV - E2 MUH-07RV - E3 MUH-07RV - E4 MUH-09RV - E1 MUH-09RV - E2 MUH-09RV - E3 MUH-09RV - E4 MUH-12RV - E1 MUH-12RV - E2 MUH-12RV - E3 MUH-12RV - E4 8-10. ACCESSORY AND 8-9. OUTDOOR UNIT REMOTE CONTROLLER ELECTRICAL PARTS AND FUNCTIONAL PARTS MUH-07RV MUH-09RV MUH-12RV - E1 E2 E3 E1 E2 E3 E1 E2 E3 8 7 12 6 2 14 13 1 3 MUH-07RV MUH-09RV MUH-12RV - 5 4 E4 E4 E4 8-9. OUTDOOR UNIT ELECTRICAL PARTS AND FUNCTIONAL PARTS Part numbers that are circled are not shown in the illustration. No. 1 2 3 4 5 6 7 8 9 10 11 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 336 665 440 671 442 672 085 694 079 696 440 679 699 128 437 466 440 697 289 697 440 699 440 095 085 501 501 301 301 301 301 353 353 353 353 451 451 451 383 374 375 374 374 310 310 310 310 490 382 385 Part name Symbol in Wiring Diagram PROPELLER FAN PROPELLER FAN OUTDOOR FAN MOTOR MF OUTDOOR FAN MOTOR MF OUTDOOR FAN MOTOR MF OUTDOOR FAN MOTOR MF COMPRESSOR CAPACITOR C1 COMPRESSOR CAPACITOR C1 COMPRESSOR CAPACITOR C1 COMPRESSOR CAPACITOR C1 DEICER P.C. BOARD DEICER P.C. BOARD DEICER P.C. BOARD SURGE ABSORBER DSAR TERMINAL BLOCK TB1 TERMINAL BLOCK TB1 TERMINAL BLOCK TB2 TERMINAL BLOCK TB2 DEFROST THERMISTOR RT61 DEFROST THERMISTOR RT61 DEFROST THERMISTOR RT61 DEFROST THERMISTOR RT61 R. V. COIL 21S4 FUSE F61 VARISTOR NR61 Q'ty/unit MUH-09RV- MUH-07RVE1 E2 E3 1 1 1 E4 E1 E2 E3 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 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 250V 2A 1 1 2 1 2 1 2 1 1 3P 1 3P 2P 1 2P 1 1 1 1 1 1 RA6V23RA6V23RA6V331 RA6V3325+ /440V AC 25+ /440V AC 30+ /440V AC 1 30+ /440V AC 1 1 1 1 1 1 1 1 1 1 1 1 1 Remarks E4 1 1 1 1 1 1 1 1 1 1 1 1 E3 1 1 1 E2 1 1 1 E1 1 1 1 E4 MUH-12RV- 1 1 1 1 1 1 1 1 1 1 1 1 8-10. ACCESSORY AND REMOTE CONTROLLER 12 E02 E02 13 E02 14 E02 430 440 444 440 426 704 704 705 REMOTE CONTROLLER DRAIN SOCKET DRAIN SOCKET DRAIN CAP 1 1 2 32 1 1 1 2 1 2 1 2 2 1 1 1 2 1 2 1 2 2 2PCS/SET OB252C-2.qxp 02.4.25 11:28 AM Page 33 MUX-10RV - E1 MUX-10RV - E2 8-11. OUTDOOR UNIT STRUCTURAL PARTS, ELECTRICAL PARTS AND FUNCTIONAL PARTS 24 23 22 21 20 19 8-12. REMOTE CONTROLLER 18 17 1 4 5 16 15 14 13 12 6 11 2 3 30 10 9 8 7 When servicing, cut the tube to the proper length as shown in the REFRIGERANT SYSTEM DIAGRAM. 8-11. OUTDOOR UNIT STRUCTURAL PARTS, ELECTRICAL PARTS AND FUNCTIONAL PARTS Part numbers that are circled are 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 21 22 23 24 25 26 27 28 29 Part No. M21 T2W T2W M21 T2W T2W T2W T2W T92 T2W T2W T2W M21 M21 M21 M21 T2W T2W T2W T2W M21 T2W M21 T2W T2W T2W M21 T2W T2W N71 304 459 478 E03 418 E03 E03 514 E03 E42 E42 K08 195 463 179 E42 E39 E42 416 601 E60 370 459 E42 E03 B00 E60 A79 350 353 630 297 232 521 245 293 200 290 661 662 936 648 936 645 389 389 388 515 501 375 378 342 301 330 340 376 382 Part Name Symbol in Wiring Diagram C2 OUTDOOR FAN CAPACITOR C1 COMPRESSOR CAPACITOR OUTDOOR HEAT EXCHANGER TOP PANEL CABINET OUTER NOZZLE SERVICE PANEL SEPARATOR MC COMPRESSOR BASE ASSEMBLY STOP VALVE (GAS) STOP VALVE (LIQUID) CAPILLARY TUBE ([3.0O[1.6O1200) SOLENOID VALVE CAPILLARY TUBE ([3.0O[1.4O1900) SOLENOID VALVE BYPASS VALVE SOLENOID COIL 21R 21R2 SOLENOID COIL (B) 21R1 SOLENOID COIL (A) MOTOR SUPPORT PROPELLER FAN TB TERMINAL BLOCK TERMINAL BLOCK TB2,TB3 COMPRESSOR CONTACTOR 52C1,52C2 OUTDOOR FAN MOTOR MF OVERCURRENT RELAY 51C RELAY X1,X2 TERMINAL BLOCK TB FUSE F12,F13 Q'ty / unit E2 1 1 1 1 1 1 1 1 1 1 2 2 1 1 1 2 1 1 1 1 1 1 2 2 1 1 2 1 2 1 1 1 1 1 1 1 1 1 1 2 2 1 1 1 2 1 1 1 1 1 1 2 2 1 1 2 1 2 8-12. REMOTE CONTROLLER 30 E02 408 426 REMOTE CONTROLLER 2 33 Remarks MUX-10RVE1 1.5+440V AC 17+440V AC KH-134VLL [9.52 [6.35 [3.0O[1.6O1000 [3.0O[1.4O400 (2PCS), [3.0O[1.4O200 LN RA6V22G4F11123T 2,1,2,1 2A 250V OB252C-2.qxp 02.4.25 11:29 AM Page 34 MUX-18RV - E1 MUX-18RV - E2 8-13. OUTDOOR UNIT STRUCTURAL PARTS, ELECTRICAL PARTS AND FUNCTIONAL PARTS 31 30 29 28 27 26 25 24 23 22 6 21 20 1 19 18 17 16 15 14 13 14 13 12 11 2 10 9 4 3 8-14. REMOTE CONTROLLER 37 34 5 6 7 8 OB252C-2.qxp 02.4.25 11:29 AM Page 35 MUX-18RV - E1 MUX-18RV - E2 8-13. OUTDOOR UNIT STRUCTURAL PARTS, ELECTRICAL PARTS AND FUNCTIONAL PARTS Part numbers that are circled are not shown in the illustration. No. Part No. Part Name Symbol in Wiring Diagram Q'ty / unit Remarks MUX-18RVE1 E2 1 1 1 T2W 457 232 CABINET 1 1 2 T2W 466 509 OUTER NOZZLE 1 1 3 M21 K59 245 SERVICE PANEL 51C1,51C2 2 2 G4F11123T 4 T2W E03 330 OVERCURRENT RELAY MC1,MC2 2 2 KH-134VLL 5 T92 514 200 COMPRESSOR [3.0O[1.6O1000 3 3 6 M21 S07 936 CAPILLARY TUBE ([3.0X[1.6X1400) [3.0O[1.6O1100 (2PCS) 1 1 7 T2W E06 290 BASE 1 1 [3.0O[1.4O1,100 8 M21 B93 936 CAPILLARY TUBE ([3.0X[1.4X1100) 1 1 [9.52 9 T2W 689 667 STOP VALVE(GAS) 1 1 [6.35 10 T2W 689 665 STOP VALVE(LIQUID) 1 1 [9.52 11 M21 K59 661 STOP VALVE(GAS) 1 1 [6.35 12 M21 K59 662 STOP VALVE(LIQUID) 2 2 13 M21 SJ4 667 UNION(3/8) 2 2 14 M21 L01 666 UNION(1/4) 1 1 15 M21 195 648 SOLENOID VALVE 2 2 16 M21 179 645 SOLENOID VALVE 21R 1 1 17 T2W A23 490 SOLENOID COIL 21R1 1 1 18 T2W E41 489 SOLENOID COIL(B) 21R2 1 1 19 T2W E41 488 SOLENOID COIL(C) 1 1 20 T2W E41 291 BACK PANEL TB 1 1 A, B UNIT 21 T2W E60 375 TERMINAL BLOCK TB 1 1 POWER SUPPLY 22 T2W E60 376 TERMINAL BLOCK X11,X12 2 2 LY-2F 23 T2W 813 342 FAN MOTOR RELAY 52C1,52C2 2 2 24 T2W 459 342 COMPRESSOR CONTACTOR C3 1 1 3µF 440V AC 25 M21 W16 350 OUTDOOR FAN CAPACITOR C1,2 2 2 17µF 440V AC 26 T2W 304 353 COMPRESSOR CAPACITOR 1 1 27 M21 B19 515 MOTOR SUPPORT MF 1 1 RA6V50 28 T2W A73 301 OUTDOOR FAN MOTOR 1 1 29 M21 JN0 501 PROPELLER FAN 1 1 30 T2W A74 630 OUTDOOR HEAT EXCHANGER 1 1 31 M21 B57 249 SIDE PANEL 1 1 [3.0O[1.6O300 32 M21 G46 936 CAPILLARY TUBE ([3.0X[1.6X800) TB 1 1 C UNIT 33 T2W E61 377 TERMINAL BLOCK TB2,TB3 2 2 34 M21 370 378 TERMINAL BLOCK X1,X2,52CA 3 3 35 M21 B00 340 RELAY F12,F13,F14 3 3 2A 250V 36 T2W A79 382 FUSE When servicing, cut the tube to the proper length as shown in the REFRIGERANT SYSTEM DIAGRAM. 8-14. REMOTE CONTROLLER 37 E02 408 426 REMOTE CONTROLLER 2 35 OB252C-2.qxp 02.4.25 11:29 AM Page 36 MUX-24RV - E1 MUX-24RV - E2 8-15. OUTDOOR UNIT ELECTRICAL PARTS AND FUNCTIONAL PARTS 16 1 15 13 14 12 8-16. REMOTE CONTROLLER 11 19 10 9 17 8 2 3 4 5 7 6 8-15. OUTDOOR UNIT ELECTRICAL PARTS AND FUNCTIONAL PARTS Part number that is circled is not shown in the illustration. No. 1 2 3 4 5 6 Part No. M21 T2W T2W T2W T2W T2W 17A E44 E38 E38 E44 813 501 389 389 388 388 342 Part Name PROPELLER FAN SOLENOID COIL (B) SOLENOID COIL (D) SOLENOID COIL (C) SOLENOID COIL (A) FAN MOTOR RELAY 7 T2W E44 375 TERMINAL BLOCK 8 T2W E62 375 TERMINAL BLOCK 9 T2W E06 353 OUTDOOR FAN CAPACITOR 10 T2W E08 381 FUSE 11 T2W 459 342 COMPRESSOR RELAY 12 13 14 15 16 17 18 T2W T2W T2W T2W T2W M21 M21 A62 779 E37 E37 E44 B00 020 353 353 388 389 301 340 378 COMPRESSOR CAPACITOR COMPRESSOR CAPACITOR SOLENOID COIL SOLENOID COIL OUTDOOR FAN MOTOR RELAY TERMINAL BLOCK Symbol in Wiring Diagram 21R2 21R4 21R3 21R1 X11,X12 TB1,TB2 TB3,TB4 TB C11 F 52C1,52C2 52C3,52C4 C1 C2 21RA 21RB MF X1,X2,X3,X4 TB5,6,7,8,9,10 Q'ty / unit E2 1 1 1 1 1 2 1 1 1 1 1 2 4 4 1 1 1 1 1 1 3+/440V AC 3.15A 250V AC 4 4 200/240V AC 1 1 1 1 1 4 6 1 1 1 1 1 4 6 30+/420V AC 25+/420V AC 8-16. REMOTE CONTROLLER 19 E02 408 426 REMOTE CONTROLLER 3 36 Remarks MUX-24RVE1 LY-2F RA6V25G4F11123T-MT OB252C-2.qxp 02.4.25 11:29 AM Page 37 MUX-24RV - E1 MUX-24RV - E2 8-17. OUTDOOR UNIT STRUCTURAL PARTS 1 22 21 20 19 18 17 16 15 14 13 3 2 4 5 6 8 7 9 10 11 12 Part number that is 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 21 22 23 Part No. T2W T2W M21 M21 M21 T92 T2W T2W M21 M21 T2W T92 M21 T2W T2W T2W T2W T2W T2W T2W T2W T2W M21 E44 E44 51E AJ2 179 702 E44 E44 00A 00L E44 531 21J E44 E44 E44 E44 E44 E44 E44 E44 E44 K47 521 245 515 936 645 600 642 644 661 661 290 600 662 643 641 648 248 523 297 630 232 249 936 Part Name OUTER NOZZLE SERVICE PANEL MOTOR SUPPORT CAPILLARY TUBE ([3.0O[1.6O1100) SOLENOID VALVE (A,B) COMPRESSOR (C,D) PIPE B S. V S. V HEADER B STOP VALVE (GAS) STOP VALVE (GAS) BASE COMPRESSOR (A,B) STOP VALVE (LIQUID) S. V HEADER A PIPE A S. V SOLENOID VALVE REAR PANEL REAR GUARD TOP PANEL OUTDOOR HEAT EXCHANGER FRONT PANEL SIDE PANEL CAPILLARY TUBE ([3.0O[1.6O800) Symbol in Wiring Diagram MC2 MC1 Q'ty / unit Remarks MUX-24RVE1 E2 1 1 1 2 4 1 1 1 2 2 1 1 4 1 1 2 1 1 1 1 1 1 4 1 1 1 2 4 1 1 1 2 2 1 1 4 1 1 2 1 1 1 1 1 1 4 [3.0O[1.6O1000 RH-174VGH [9.52 [12.7 RH-231VHA [6.35 Including Capillary TUBE ([3.0O[1.8O260, [3.0O[1.6O400) [3.0O[1.6O420 (2PCS) [3.0O[1.6O650 (2PCS) When servicing, cut the tube to the proper length as shown in the REFRIGERANT SYSTEM DIAGRAM. 37 OB252C-2.qxp 02.4.25 11:29 AM Page 38 MXZ-18RV - E1 MXZ-18RV - E2 8-18. OUTDOOR UNIT STRUCTURAL PARTS AND FUNCTIONAL PARTS 26 25 24 23 22 21 20 19 18 1 2 17 11 12 16 15 13 3 14 4 5 6 7 8 9 10 Part numbers that are circled are 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 21 22 23 24 25 26 27 28 Part No. R01 T2W M21 M21 M21 T2W T2W M21 T92 M21 M21 M21 M21 M21 M21 M21 T2W T2W T2W T7W M21 M21 T2W M21 T2W M21 M21 M21 A00 A70 LL4 LL4 LL4 A69 E65 LL4 669 LL4 LL4 LL4 LL4 SJ4 SJ4 SJ4 A64 E41 E65 250 LL4 LL4 A70 SJ4 E41 LL4 986 L11 662 009 521 232 501 009 212 245 452 248 488 487 646 290 666 667 668 646 523 403 939 938 515 630 301 297 936 936 Part Name Symbol in Wiring Diagram SIDE PANEL HANDLE FAN GUARD FRONT PANEL PROPELLER FAN HANDLE LABEL SERVICE PANEL MC COMPRESSOR REAR PANEL LEV. A EXPANSION VALVE (COIL) LEV. B EXPANSION VALVE (COIL) EXPANSION VALVE BASE ASSEMBLY UNION (1/4F) UNION (3/8F) BALL VALVE (3/8) HPS HIGH PRESSURE SWITCH REAR GUARD 4-WAY VALVE ACCUMULATOR MUFFLER MOTOR SUPPORT OUTDOOR HEAT EXCHANGER MF OUTDOOR FAN MOTOR TOP PANEL CAPILLARY TUBE ([4.0✕[2.4✕2000) CAPILLARY TUBE ([2.0✕[0.6✕1000) Q'ty / unit Remarks MXZ-18RVE1 E2 1 2 1 1 1 1 1 1 1 1 1 1 2 1 2 2 2 1 1 1 1 1 1 1 1 1 1 1 1 2 1 1 1 1 1 1 1 1 1 1 2 1 2 2 2 1 1 1 1 1 1 1 1 1 1 1 RHV - 207FEM RA6V50[4.0O[2.4O300 (2PCS) [4.0O[2.4O400 (3PCS) [2.0✕[0.6✕500 When servicing, cut the tube to the proper length as shown in the REFRIGERANT SYSTEM DIAGRAM. 38 OB252C-2.qxp 02.4.25 11:29 AM Page 39 MXZ-18RV - E1 MXZ-18RV - E2 8-19. OUTDOOR UNIT ELECTRICAL PARTS 1 16 17 15 14 8-20. ACCESSORY AND REMOTE CONTROLLER 13 2 21 20 12 3 11 10 4 5 9 6 7 8 8-19. OUTDOOR UNIT ELECTRICAL PARTS Part numbers that are circled are 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 Part No. T2W M21 T2W M21 T2W T2W T2W M21 T2W T2W T2W T2W T2W T2W T2W T2W M21 T2W T2W E22 A19 E41 V47 A70 E58 E41 LL4 E55 E41 E41 E41 E58 E41 A70 A70 U48 E58 E22 341 447 309 443 337 376 441 424 309 306 308 307 451 398 357 356 362 375 425 Part Name Symbol in Wiring Diagram DIODE MODULE DS61 DIODE MODULE DS63 FIN TEMPERATURE THERMISTOR RT63 TR POWER TRANSISTOR MODULE L REACTOR TB TERMINAL BLOCK RELAY P.C. BOARD NF61 NOISE FILTER DISCHARGE TEMPERATURE THERMISTOR RT62 GAS PIPE TEMPERATURE THERMISTOR RT64,65 DEFROST TEMPERATURE THERMISTOR RT61 SUCTION TEMPERATURE THERMISTOR RT66, RT67 ELECTRONIC CONTROL P.C. BOARD R.V. COIL 21S4 C61 POWER-FACTOR CAPACITOR C67 SMOOTHING CAPACITOR R65 CURRENT-DETECTING RESISTOR TB TERMINAL BLOCK NF62 NOISE FILTER Q'ty / unit Remarks MXZ-18RVE1 E2 1 1 1 1 1 2 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 2 1 1 1 1 1 1 1 1 1 1 1 1 1 2 1 1 3N SUCTION EVAPORATION 1800+ 400V AC 100+ 400V AC LNPE 8-20. ACCESSORY AND REMOTE CONTROLLER 20 E02 430 426 REMOTE CONTROLLER 21 T2W E59 704 DRAIN SOCKET ASSEMBLY 39 DRAIN SOCKET O1 DRAIN CAP O2 OB252C-2.qxp 02.4.25 11:29 AM Page 40 HEAD OFFICE: MITSUBISHI DENKI BLDG., 2-2-3, MARUNOUCHI, CHIYODA-KU, TOKYO 100-8310, JAPAN C Copyright 2000 MITSUBISHI ELECTRIC ENGINEERING CO.,LTD Distributed in Mar. 2002. No.OB252 REVISED EDITION C 13 Distributed in Jan. 2002. No.OB252 REVISED EDITION B 273 Distributed in Mar. 2001. No.OB252 REVISED EDITION A 249 Distributed in Mar. 2000. No.OB252 543 Made in Japan New publication, effective Mar. 2002 Specifications subject to change without notice.