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38MGRBQ: Service Manual
3
ELECTRICAL PARTS
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
REMOVE ELECTRICAL PARTS
1. Perform the steps from sections 1 and 2.
2. Remove the 4 screws securing the IPM board.
3. Unfasten the reactor connector.
4. Unfasten the compressor connector.
5. Disconnect the following three pieces of connection wires
and connectors between IPM and PCB.
6. Remove the IPM Board
7. Disconnect the connectors and wires connected from the
PCB and other parts.
Connectors:
CN17:T3/T4 temperature sensor (2p/2p,white)
CN7: Discharge temperature sensor (2p,white)
CN15:T2B-A,B,C temperature sensor (2p/2p/2p,white)
CN18/CN19/CN22: Electronic expansion valve A,B,C
(6p/6p/6p,red/red/red)
CN25/CN23/CN20: S-A,S-B,S-C (3p/3p/3p,white/white/
white)
Wires:
CN1/CN2: 4-way valve (blue-blue)
CN5/CN6: Crankcase heating cable (red-red)
CN3:L1-IN (red)
CN4:L2-IN (black)
8. Disconnect the grounding wire (yellow-green) after
removing the handle and the right-rear panel.
9. Remove the PCB board.
CN3(red or brown)
92
REMARKS
IPM Board
PCB Board
CN1(5p,white)
CN14(3p,white)
CN5(blue)
CN1/CN 2
CN5/CN 6
CN 20
CN 23
CN 25
CN
3
CN4
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