Service manual

ManualsBrandsMitsubishi ManualsAir ConditionerMCFH-A18WV

FLOOR AND CEILING TYPE AIR CONDITIONERS

CONTENTS

1. TECHNICAL CHANGES ····································2

2. PART NAMES AND FUNCTIONS······················5

3. SPECIFICATION·················································6

4. NOISE CRITERIA CURVES·······························7

5. OUTLINES AND DIMENSIONS ·························8

6. WIRING DIAGRAM ··········································10

7. REFRIGERANT SYSTEM DIAGRAM ··············11

8. PERFORMANCE CURVES······························13

9. ACTUATOR CONTROL····································24

10. SERVICE FUNCTIONS·····································24

11. TROUBLESHOOTING ······································25

12. DISASSEMBLY INSTRUCTIONS·····················35

13. PARTS LIST······················································42

14. RoHS PARTS LIST···········································48

HFC

utilized

R410A

MUCFH-GA35VB -

MUCFH-GA50VB -

MUCFH-GA60VB -

SERVICE MANUAL

Models

OUTDOOR UNIT

NOTE:

This service manual describes technical data of the outdoor units.

RoHS compliant products have <G> mark on the spec name plate.

For servicing of RoHS compliant products, refer to the RoHS PARTS LIST (RoHS compliant).

Indoor unit service manual

MCFH-GA•VB Series (OB380)

No. OB381

REVISED EDITION-B

Revision B:

• The fan guard for MUCFH-GA 60VB-

has been changed.

Please void OB381 REVSED EDITION-A.

MUCFH-GA50VB

OB381A--1.qxp 10.5.25 9:28 AM Page 1

Summary of content (56 pages)

PAGE 1
OB381A--1.qxp 10.5.25 9:28 AM Page 1 Revision B: • The fan guard for MUCFH-GA 60VB- E1 has been changed. Please void OB381 REVSED EDITION-A. FLOOR AND CEILING TYPE AIR CONDITIONERS OUTDOOR UNIT SERVICE MANUAL HFC utilized No. OB381 REVISED EDITION-B R410A Models MUCFH-GA35VB MUCFH-GA50VB MUCFH-GA60VB - E1 E1 E1 Indoor unit service manual MCFH-GA•VB Series (OB380) CONTENTS MUCFH-GA50VB 1. TECHNICAL CHANGES ····································2 2.
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OB381A--1.qxp 10.5.25 9:28 AM Page 2 Revision A : • RoHS PARTS LIST has been added. Revision B : • The fan guard for MUCFH-GA 60VB- 1 E1 has been changed. TECHNICAL CHANGES MUH-A12YV - E1 ➔ MUCFH-GA35VB - E1 1. Indication of capacity has been changed. (BTU base ➔ kW) MUCFH-A18WV - E1 ➔ MUCFH-GA50VB - E1 1. Indication of capacity has been changed. (BTU base ➔ kW) MUCFH-A24WV - E1 ➔ MUCFH-GA60VB - E1 1. Indication of capacity has been changed.
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OB381A--1.qxp 10.5.25 9:28 AM Page 3 Compressor New Specification Current Specification The incompatible refrigeration oil easily separates from Since refrigerant and refrigerating oil are compatible each, refrigerant and is in the upper layer inside the suction muffler. refrigeration oil goes back to the compressor through the Raising position of the oil back hole enables to back the lower position oil back hole. refrigeration oil of the upper layer to flow back to the compressor.
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OB381A--1.qxp 10.5.25 9:28 AM Page 4 2.Refrigerant piping 1 Specifications Use the refrigerant pipes that meet the following specifications. Outside diameter Pipe mm Wall thickness 6.35 0.8 mm 9.52 0.8 mm Heat resisting foam plastic 12.7 0.8 mm Specific gravity 0.045 Thickness 8 mm 15.88 1.0 mm For liquid For gas Insulation material • Use a copper pipe or a copper-alloy seamless pipe with a thickness of 0.8 mm (6.35, 9.52, 12.7), 1.0 mm (15.88).
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OB381A--1.qxp 2 10.5.
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OB381A--1.qxp 3 10.5.25 9:28 AM Page 6 SPECIFICATION Outdoor model MUCFH-GA35VB MUCFH-GA50VB MUCFH-GA60VB Function Heating Cooling Single phase 230V, 50Hz 3.7 3.5 — 1.5 1,710 10 4.23 4.85 954 1,094 98 29 3.92 4.54 0.31 3.63 3.02 RN135VHSHT 900 C-R 2.79 C-S 3.36 RA6V33-JB WHT-BLK 215.1 BLK-RED 306.9 780o540o255 40 49 825 1 Heating Cooling Single phase 230V, 50Hz 5.0 4.8 — 2.4 2,196 15 8.38 8.01 1,810 1,730 94 37 7.99 7.62 0.39 2.65 2.65 RN196VHSHT 1,300 C-R 1.80 C-S 3.00 RA6V50-PA WHT-BLK 79.
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OB381A--1.qxp 10.5.25 9:28 AM 4 Page 7 NOISE CRITERIA CURVES MUCFH-GA50VB MUCFH-GA35VB SPL(dB(A)) FUNCTION FUNCTION LINE COOLING COOLING 49 Test conditions, Cooling : Dry-bulb temperature 35: Wet-bulb temperature (24:) Heating : Dry-bulb temperature 7: Wet-bulb temperature 6: OCTAVE BAND SOUND PRESSURE LEVEL, dB re 0.0002 MICRO BAR OCTAVE BAND SOUND PRESSURE LEVEL, dB re 0.
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OB381A--1.qxp 5 10.5.25 9:28 AM Page 8 OUTLINES AND DIMENSIONS Unit: mm 100mm or more MUCFH-GA35VB REQUIRED SPACE Air in 32 320 100 or m ore 255 285 320 109 mm ore rm mo m 100 Air in Drainage 3 holes [33 147 110 Air out ore 25 m 00m or m 4 35 0m Service panel m 43- 35- 540 155 90 260 10 122 500 780 mo re Liquid refrigerant pipe joint Refrigerant pipe (flared) [6.35 40 or 104 74 Gas refrigerant pipe joint Refrigerant pipe (flared) [12.
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OB381A--1.qxp 10.5.25 9:28 AM Page 9 Unit: mm MUCFH-GA60VB Open as a rule 500mm or more if the front and both sides are open REQUIRED SPACE 515 299 100mm or more 200mm or more if there are obstacles to both sides 40 66 360 330 51 34 100mm or more 500 840 121 Open as a rule 500mm or more if the back, 80 both sides and top are open 350mm or more Service panel 155 90 35- 30- 430 850 Liquid refrigerant pipe joint Refrigerant pipe (flared) [6.
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OB381A--1.qxp 6 10.5.25 9:28 AM Page 10 WIRING DIAGRAM MUCFH-GA35VB 21S4 RT61 N CN661 BRN CN711 1 WHT 2 BLK 3 RED SR61 F61 BRN T61 BLU TAB20 230V 50Hz CN721 NR61 POWER SUPPLY ~/N BLK DSAR TB1 L 1 2 3 SR62 N CIRCUIT BREAKER MF RED CN730 TB2 3 TO INDOOR UNIT CONNECTING 12V C65 52C PE GRN/YLW 4 3 DEICER P.C.
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OB381A--1.qxp 10.5.25 9:28 AM Page 11 MUCFH-GA60VB MF BLK WHT ORN RED DSAR 4 3 2 1 BLK WHT BRN RT61 TO INDOOR UNIT CONNECTING 12V L TB1 X62 N X52 RED ORN X52 PE COM DEICER P.C.
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OB381A--1.qxp 10.5.25 9:28 AM Page 12 MUCFH-GA50VB 4- way valve Refrigerant pipe [12.7 (with heat insulator) Oil separator #100 Stop valve (with service port) Outdoor heat exchanger Defrost thermistor RT61 Flared connection Capillary tube [2.5o[0.6o1,000 Compressor Capillary tube [3.0o[1.6o750 (2 pcs) Flared connection Capillary tube [3.0o[1.6o650 Receiver Stop Refrigerant pipe[6.35 valve (with heat insulator) Strainer #100 Check valve R.V. coil Heating ON Cooling OFF Capillary tube [3.
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OB381A--1.qxp 10.5.25 9:28 AM Page 13 MAX. REFRIGERANT PIPING LENGTH & MAX. HEIGHT DIFFERENCE Refrigerant piping MAX. length : m A Model Piping size O.D. : mm Gas MUCFH-GA35VB Liquid {12.7 25 MUCFH-GA50VB {6.35 {15.88 MUCFH-GA60VB W Max. Height difference 10m wIt does not matter which unit is higher. A: Refrigerant piping Max.length 25m ADDITIONAL REFRIGERANT CHARGE (R410A : g) If pipe length exceeds 7m, additional refrigerant (R410A) charge is required.
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OB381A--1.qxp 10.5.25 9:28 AM Page 14 How to measure the indoor air wet-bulb/dry-bulb temperature difference 1. Attach at least 2 sets of wet and dry-bulb thermometers to the indoor air inlet 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. 2. Attach at least 2 sets of wet and dry-bulb thermometers to the outdoor air inlet.
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OB381A--1.qxp 10.5.25 9:28 AM Page 15 2 Air flow should be set at MAX. 3 The unit of pressure has been changed to MPa on the international system of units(SI unit system). f [Gauge]) The conversion factor is : 1(MPa [Gauge]) =10.2(kgf/f MUCFH-GA35VB 13 1.3 12 1.2 11 1.1 10 1.0 9 0.9 8 0.8 7 0.
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OB381A--1.qxp 10.5.25 9:29 AM Page 16 HEAT operation Condition Indoor : Dry bulb temerature 20.0: Wet bulb temerature 14.5: MUCFH-GA35VB Outdoor : Dry bulb temerature 7,15,20: Wet bulb temerature 6,12,14.
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OB381A--1.qxp 10.5.25 9:29 AM Page 17 PERFORMANCE DATA COOL operation (230V) MCFH-GA35VB : MUCFH-GA35VB CAPACITY :3.5(kW) SHF :0.70 INPUT :1160(W) 21 Q SHC SHF 18 4.11 2.14 0.52 20 4.29 1.72 0.40 18 4.11 2.30 0.56 20 4.29 1.89 0.44 22 4.46 1.43 0.32 18 4.11 2.47 0.60 20 4.29 2.06 0.48 22 4.46 1.61 0.36 18 4.11 2.63 0.64 20 4.29 2.23 0.52 22 4.46 1.79 0.40 24 4.69 1.31 0.28 18 4.11 2.80 0.68 20 4.29 2.40 0.56 22 4.46 1.96 0.44 24 4.69 1.50 0.32 18 4.11 2.96 0.72 20 4.29 2.57 0.60 22 4.46 2.14 0.48 24 4.
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OB381A--1.qxp 10.5.25 9:29 AM Page 18 PERFORMANCE DATA COOL operation (230V) MCFH-GA35VB : MUCFH-GA35VB CAPACITY :3.5(kW) SHF :0.70 INPUT :1160(W) OUTDOOR DB(:) 35 40 INDOOR INDOOR DB(:) WB(:) Q SHC SHF INPUT Q SHC SHF INPUT Q 21 18 3.43 1.78 0.52 1137 3.15 1.64 0.52 1206 3.03 21 20 3.61 1.44 0.40 1183 3.36 1.34 0.40 1241 3.24 22 18 3.43 1.92 0.56 1137 3.15 1.76 0.56 1206 3.03 22 20 3.61 1.59 0.44 1183 3.36 1.48 0.44 1241 3.24 22 22 3.82 1.22 0.32 1230 3.57 1.14 0.32 1299 3.45 23 18 3.43 2.06 0.
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OB381A--1.qxp 10.5.25 9:29 AM Page 19 PERFORMANCE DATA COOL operation(230V) MCFH-GA50VB : MUCFH-GA50VB CAPACITY :4.8(kW) SHF :0.65 INPUT :1810(W) OUTDOOR DB(:) 21 Q SHC SHF INPUT 18 5.64 2.65 0.47 1448 20 5.88 2.06 0.35 1520 18 5.64 2.88 0.51 1448 20 5.88 2.29 0.39 1520 22 6.12 1.65 0.27 1575 18 5.64 3.10 0.55 1448 20 5.88 2.53 0.43 1520 22 6.12 1.90 0.31 1575 18 5.64 3.33 0.59 1448 20 5.88 2.76 0.47 1520 22 6.12 2.14 0.35 1575 24 6.43 1.48 0.23 1647 18 5.64 3.55 0.63 1448 20 5.88 3.00 0.51 1520 22 6.
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OB381A--1.qxp 10.5.25 9:29 AM Page 20 PERFORMANCE DATA COOL operation(230V) MCFH-GA50VB : MUCFH-GA50VB CAPACITY :4.8(kW) SHF :0.65 INPUT :1810(W) OUTDOOR DB(:) 35 40 INDOOR INDOOR DB(:) WB(:) Q SHC SHF INPUT Q SHC SHF INPUT Q 21 18 4.70 2.21 0.47 1774 4.32 2.03 0.47 1882 4.15 21 20 4.94 1.73 0.35 1846 4.61 1.61 0.35 1937 4.44 22 18 4.70 2.40 0.51 1774 4.32 2.20 0.51 1882 4.15 22 20 4.94 1.93 0.39 1846 4.61 1.80 0.39 1937 4.44 22 22 5.23 1.41 0.27 1919 4.90 1.32 0.27 2027 4.73 23 18 4.70 2.59 0.
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OB381A--1.qxp 10.5.25 9:29 AM Page 21 PERFORMANCE DATA COOL operation(230V) MCFH-GA60VB : MUCFH-GA60VB CAPACITY :6.0(kW) SHF :0.64 INPUT :2450(W) INDOOR INDOOR DB(:) WB(:) 21 21 22 22 22 23 23 23 24 24 24 24 25 25 25 25 26 26 26 26 26 27 27 27 27 27 28 28 28 28 28 29 29 29 29 29 30 30 30 30 30 31 31 31 31 31 32 32 32 32 32 NOTE Q 21 SHC SHF INPUT 18 7.05 3.24 0.46 20 7.35 2.50 0.34 18 7.05 3.53 0.50 20 7.35 2.79 0.38 22 7.65 1.99 0.26 18 7.05 3.81 0.54 20 7.35 3.09 0.42 22 7.65 2.30 0.30 18 7.05 4.
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OB381A--1.qxp 10.5.25 9:29 AM Page 22 PERFORMANCE DATA COOL operation(230V) MCFH-GA60VB : MUCFH-GA60VB CAPACITY :6.0(kW) SHF :0.64 INPUT :2450(W) OUTDOOR DB(:) 35 40 INDOOR INDOOR DB(:) WB(:) Q SHC SHF INPUT Q SHC SHF INPUT 21 21 22 22 22 23 23 23 24 24 24 24 25 25 25 25 26 26 26 26 26 27 27 27 27 27 28 28 28 28 28 29 29 29 29 29 30 30 30 30 30 31 31 31 31 31 32 32 32 32 32 NOTE 18 5.88 2.70 0.46 20 6.18 2.10 0.34 18 5.88 2.94 0.50 20 6.18 2.35 0.38 22 6.54 1.70 0.26 18 5.88 3.18 0.54 20 6.18 2.60 0.
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OB381A--1.qxp 10.5.25 9:29 AM Page 23 PERFORMANCE DATA HEAT operation(230V) MCFH-GA35VB : MUCFH-GA35VB CAPACITY : 3.7(kW) INPUT : 1020(W) OUTDOOR WB(:) INDOOR -10 -5 0 5 10 15 20 DB(:) Q INPUT Q INPUT Q INPUT Q INPUT Q INPUT Q INPUT Q INPUT 3.29 898 3.77 969 4.26 1030 4.70 1061 5.18 1081 2.33 663 2.81 796 15 3.15 938 3.59 1010 4.07 1061 4.51 1091 4.98 1132 2.22 714 2.66 847 21 2.92 989 3.40 1061 3.89 1112 4.33 1142 4.81 1173 2.00 765 2.
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OB381A--1.qxp 9 10.5.25 9:29 AM Page 24 ACTUATOR CONTROL MUCFH-GA35VB MUCFH-GA50VB MUCFH-GA60VB R.V. coil control Heating · · · · · ON Cooling · · · · · OFF Dry · · · · · · · · OFF NOTE. : The 4-way valve reverses for 5 seconds right before start-up of the compressor. Example. In case of power ON with remote controller Compressor R.V. coil Outdoor fan 10 (COOL / DRY) (HEAT) 5 sec. 5 sec.
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OB381A--1.qxp 10.5.25 9:29 AM 11 Page 25 TROUBLESHOOTING MUCFH-GA35VB MUCFH-GA50VB MUCFH-GA60VB 11-1. CAUTIONS ON TROUBLESHOOTING 1. Before troubleshooting, check the following: (1) Check the power supply voltage. (2) Check the indoor/outdoor connecting wire for mis-wiring. 2. Take care the following during service.
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OB381A--1.qxp 10.5.25 9:29 AM Page 26 11-2. INSTRUCTION OF TROUBLESHOOTING Start Indoor unit operates. Outdoor unit doesn't operate. Outdoor unit operates only in Test Run operation.w Check room temperature thermistor. Refer to 11-5. "Test point diagram and voltage". Outdoor unit doesn't operate even in Test Run operation.w Indoor unit operates. Outdoor unit doesn't operate normally. Outdoor unit doesn't stop even if indoor unit stops. Indoor unit doesn't receive the signal from remote controller.
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OB381A--1.qxp 10.5.25 9:29 AM Page 27 11-3. TRUBLE CRITERION OF MAIN PARTS MUCFH-GA35VB MUCFH-GA50VB Part name Defrost thermistor (RT61) MUCFH-GA60VB Figure Check method and criterion Measure the resistance with a tester. (Part temperature -10°C ~ 40°C) Normal Abnormal 5kΩ ~ 60kΩ Open or short-circuit Compressor (MC) INNER PROTECTOR MUCFH-GA35VB 155i 5: OPEN 90i10: CLOSE MUCFH-GA50VB /GA60VB Measure the resistance between the terminals with a tester.
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OB381A--1.qxp 10.5.25 9:29 AM Page 28 11-4. TROUBLESHOOTING FLOW Compressor and/or outdoor fan motor doesn’t operate. A Check of outdoor unit MUCFH-GA35VB MUCFH-GA50VB 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 J205 + –J101 – on the deicer P.C.
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OB381A--1.qxp 10.5.25 9:29 AM Page 29 Compressor and/or outdoor fan motor doesn’t operate. A Check of outdoor unit MUCFH-GA60VB Start 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. Is there 5V DC between No J101 + - J401 on the deicer P.C. board? w1 Yes Is there 230V AC between CN730 1-3 on the deicer P.C. board? w1 Yes No Make the connection of wiring correct.
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OB381A--1.qxp 10.5.25 9:29 AM Page 30 When OPERATION INDICATOR lamp flashes ON and OFF in every 0.5-second. Outdoor unit does not operate. B How to check mis-wiring and serial signal error (when outdoor unit does not work) Start Yes Make them sure. 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.
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OB381A--2.qxp 10.5.25 9:33 AM Page 31 Compressor and/or outdoor fan motor doesn’t stop. C Check of outdoor unit MUCFH-GA35VB MUCFH-GA50VB 1 Turn OFF the power supply. 2 After 30 seconds, turn ON the power supply again. 3 Operate the unit in COOL or HEAT mode by pressing the EMERGENCY OPERATION switch. 4 Operate the unit for 1 minute or more and stop it by pressing the EMERGENCY OPERATION switch again.
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OB381A--2.qxp 10.5.25 9:33 AM Page 32 Unit operates COOL mode even if it is set to HEAT mode. D Check of R.V. coil w First, measure the resistance of R.V. coil to confirm it is disconnected or is not short-circuit. Disconnect the TAB52 on the deicer P.C. board. (MUCFH-GA60VB) Turn ON the power supply and operate the indoor unit in HEAT mode by pressing the EMERGENCY OPERATION switch.
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OB381A--2.qxp 10.5.25 9:33 AM Page 33 11-5. TEST POINT DIAGRAM AND VOLTAGE Power supply input 230V AC } } CN711 CN721 Outdoor fan motor R.V. coil 230V AC 230V AC } MUCFH-GA35VB MUCFH-GA50VB Outdoor deicer P.C. board NR61 Varistor F61 Fuse 2A/250V + -- } R601 5~10V DC Defrost interval time short pin (JPDS, JPSG) (Refer to 10-1.) wire for } Jumper change in defrost setting (JRF,JRG) (Refer to 10-2.) } 5V DC J205 + J101 -- (Refer to 11-4.A or B.
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OB381A--2.qxp 10.5.25 9:33 AM Page 34 MUCFH-GA60VB Outdoor deicer P.C. board Defrost thermistor (RT61) 100 Resistance(k") 90 80 70 60 50 40 30 20 10 0 -20 -10 0 10 20 30 40 Temperature(:) CN661 1-2 Defrost thermistor (RT61) (Refer to 11-4.E.) Fan motor (CN711) Varistor (NR62) 230V coil } R.V. (CN721) 230V Defrost interval time short pin(JPG1, R871) (Refer to 10-1.) + } 12V DC Fuse (F61) 3.15A / 250V Varistor (NR61) Power supply input CN7301-3 230V AC (Refer to 11-4.A.
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OB381A--2.qxp 10.5.25 9:33 AM 12 Page 35 DISASSEMBLY INSTRUCTIONS <"Terminal with locking mechanism" Detaching points> The terminal which has the locking mechanism can be detached as shown below. There are two types ( Refer to (1) and (2)) of the terminal with locking mechanism. The terminal without locking mechanism can be detached by pulling it out. Check the shape of the terminal before detaching. (1) Slide the sleeve and check if there is a locking lever or not.
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OB381A--2.qxp 10.5.25 9:33 AM Page 36 OPERATING PROCEDURE PHOTOS 2. Removing the deicer P.C. board Photo 4 (1) Remove the service panel and the cabinet. (2) Disconnect all the connectors and the terminals on the deicer P.C. board. (3) Remove the deicer P.C. board. Deicer P.C. board Relay panel Screw 3. Removing the propeller and the outdoor fan motor (1) Remove the cabinet. (Refer to 1.) (2) Remove the propeller nut. (3) Remove the propeller.
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OB381A--2.qxp 10.5.25 9:33 AM Page 37 OPERATING PROCEDURE PHOTOS 4. Removing the compressor (1) (2) (3) (4) (5) Remove the cabinet. (Refer to 1.) Remove the relay panel. Remove the soundproof felt. Remove the terminal cover on the compressor. Disconnect lead wires from the glass terminal of the compressor. (6) Recover gas from the refrigerant circuit. NOTE : Recover gas from the pipes until the pressure gauge shows 0 kg/cm2 (0 MPa). (7) Disconnect the welded part of the discharge pipe.
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OB381A--2.qxp 10.5.25 9:33 AM Page 38 12-2. MUCFH-GA50VB OPERATING PROCEDURE PHOTOS 1. Removing the cabinet (1) Remove the screws of the cabinet. (2) Hold the bottom of the cabinet on both sides and remove the cabinet. Photo 1 Photo 2 Screws of the cabinet Service panel Screws of the cabinet 2. Removing the deicer P.C. board Photo 3 (1) Remove the service panel and the cabinet. (2) Disconnect all the connectors and the terminals on the deicer P.C. board. (3) Remove the deicer P.C. board.
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OB381A--2.qxp 10.5.25 9:33 AM Page 39 OPERATING PROCEDURE PHOTOS 3. Removing the propeller and the outdoor fan motor (1) Remove the cabinet. (Refer to 1.) (2) Remove the propeller nut and the propeller. NOTE : Loose the propeller in the rotating direction for removal. When attaching the propeller, align the mark on the propeller and the motor shaft cut section. Set the propeller in position by using the cut on the shaft and the mark on the propeller.
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OB381A--2.qxp 10.5.25 9:34 AM Page 40 12-3. MUCFH-GA60VB OPERATING PROCEDURE PHOTOS 1.Removing the cabinet Photo 1 (1) Remove the screws of the service panel. (2) Remove the screws of the top panel. (3) Remove the screw of the valve cover. (4) Remove the service panel. (5) Remove the top panel. (6) Remove the valve cover. (7) Remove the screws of the front panel. (8) Remove the front panel. (9) Remove the screws of the back panel. (10) Remove the back panel.
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OB381A--2.qxp 10.5.25 9:34 AM Page 41 PHOTOS OPERATING PROCEDURE 3. Removing the propeller and the outdoor fan motor (1) Remove the cabinet. (Refer to 1.) (2) Remove the propeller nut and the propeller. NOTE : Loose the propeller in the rotating direction for removal. When attaching the propeller, align the mark on the propeller and the motor shaft cut section. Set the propeller in position by using the cut on the shaft and the mark on the propeller.
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OB381A--2.qxp 13 10.5.25 9:34 AM Page 42 PARTS LIST (non-RoHS compliant) MUCFH-GA35VB 13-1.
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OB381A--2.qxp 10.5.25 9:34 AM Page 43 PARTS LIST (non-RoHS compliant) MUCFH-GA35VB 13-1. OUTDOOR UNIT STRUCTURAL 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 Part No.
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OB381A--2.qxp 10.5.25 9:34 AM Page 44 PARTS LIST (non-RoHS compliant) MUCFH-GA35VB 13-3. ACCESSORY 13-2. OUTDOOR UNIT ELECTRICAL PARTS AND FUNCTIONAL PARTS 7 8 3 2 1 13 12 6 5 4 13-2. 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 name Part No.
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OB381A--2.qxp 10.5.25 9:34 AM Page 45 PARTS LIST (non-RoHS compliant) MUCFH-GA50VB 13-4. OUTDOOR UNIT STRUCTURAL PARTS, ELECTRICAL PARTS AND FUNCTIONAL PARTS 13-5. ACCESSORY 27 19 18 DEFROST THERMISTOR 28 21 20 17 15 1 16 2 14 13 12 11 10 4 3 5 6 7 8 9 13-4. 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 Part No.
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OB381A--2.qxp 10.5.25 9:34 AM Page 46 PARTS LIST (non-RoHS compliant) MUCFH-GA60VB 13-6. OUTDOOR UNIT STRUCTURAL PARTS, ELECTRICAL PARTS AND FUNCTIONAL PARTS 27 26 25 24 23 22 21 1 20 19 2 18 3 4 5 6 17 7 9 10 8 11 16 12 13 13-7.
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OB381A--2.qxp 10.5.25 9:34 AM Page 47 PARTS LIST (non-RoHS compliant) MUCFH-GA60VB 13-6. OUTDOOR UNIT STRUCTURAL PARTS, ELECTRICAL PARTS AND FUNCTIONAL PARTS Part numbers that are circled are not shown in the illustration. No. E02 E02 E02 E02 E02 E02 E02 E02 E02 E02 E02 E02 E02 E02 E02 E02 E02 E02 E02 E02 E02 E02 E07 E02 E02 E02 E02 E02 E02 E02 E02 31 E02 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 30 Part Name Part No.
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OB381A--2.qxp 14 10.5.25 9:34 AM Page 48 RoHS PARTS LIST (RoHS compliant) MUCFH-GA35VB 14-1.
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OB381A--2.qxp 10.5.25 9:34 AM Page 49 PARTS LIST (non-RoHS compliant) MUCFH-GA35VB 14-1. OUTDOOR UNIT STRUCTURAL PARTS No. 1 2 3 4 5 6 7 8 9 10 11 12 13 RoHS Part numbers that are circled are not shown in the illustration. G G G G G G G G G G G G G G 14 G G 15 G Part No.
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OB381A--2.qxp 10.5.25 9:34 AM Page 50 RoHS PARTS LIST (RoHS compliant) MUCFH-GA35VB 14-3. ACCESSORY 14-2. OUTDOOR UNIT ELECTRICAL PARTS AND FUNCTIONAL PARTS 7 8 2 1 3 13 12 6 5 4 14-2. OUTDOOR UNIT ELECTRICAL PARTS AND FUNCTIONAL PARTS No. 1 2 3 4 5 6 7 8 9 10 11 RoHS Part numbers that are circled are not shown in the illustration. G G G G G G G G G G G Part name Part No.
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OB381A--2.qxp 10.5.25 9:34 AM Page 51 RoHS PARTS LIST (RoHS compliant) MUCFH-GA50VB 14-4. OUTDOOR UNIT STRUCTURAL PARTS, ELECTRICAL PARTS AND FUNCTIONAL PARTS 14-5. ACCESSORY 27 19 18 DEFROST THERMISTOR 28 21 20 17 15 1 16 2 14 13 12 11 10 4 3 5 6 7 8 9 14-4. OUTDOOR UNIT STRUCTURAL PARTS, ELECTRICAL PARTS AND FUNCTIONAL PARTS 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 RoHS Part numbers that are circled are not shown in the illustration.
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OB381A--2.qxp 10.5.25 9:34 AM Page 52 RoHS PARTS LIST (RoHS compliant) MUCFH-GA60VB 14-6. OUTDOOR UNIT STRUCTURAL PARTS, ELECTRICAL PARTS AND FUNCTIONAL PARTS 27 26 25 24 23 22 21 1 20 19 2 18 3 4 5 6 17 7 9 10 8 11 16 12 13 14-7.
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OB381A--2.qxp 10.5.25 9:34 AM Page 53 RoHS PARTS LIST (RoHS compliant) MUCFH-GA60VB 14-6. OUTDOOR UNIT STRUCTURAL PARTS, ELECTRICAL PARTS AND FUNCTIONAL PARTS No. RoHS Part numbers that are circled are not shown in the illustration. G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G 31 G 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 30 Part Name Part No.
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OB381A--2.qxp 10.5.25 9:34 AM Page 56 HEAD OFFICE: TOKYO BLDG., 2-7-3, MARUNOUCHI, CHIYODA-KU, TOKYO 100-8310, JAPAN C Copyright 2005 MITSUBISHI ELECTRIC ENGINEERING CO.,LTD Distributed in Jun 2010. No.OB381 REVISED EDITION-B 5 Distributed in May 2006. No.OB381 REVISED EDITION-A 6 Distributed in Jan. 2005. No.OB381 6 Made in Japan New publication, effective Jun. 2010 Specifications subject to change without notice.