38MGRBQ: Service Manual
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
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5. Disconnect the connectors and wires connected from PCB
and other parts.
Connectors:
CN8: Discharge temperature sensor (2p,white)
CN12 Heatsink temperature sensor(2p,red)
CN9:T3/T4 temperature sensor (2p/2p,white)
CN11:T2B-A,B,C,D,E temperature sensor (2p/2p/2p/
2p/2p,white)
CN15/CN23/CN26/CN30/CN33: Electronic expansion
valve (6p/6p/6p/6p/6p,red)
CN37/CN29/CN21/CN16/CN13: S-A,S-B,S-C,S-D,S-E
(3p/3p/3p/3p/3p,white)
CN10: High and low pressure switch (2p/2p, white)
Wires:
CN17/CN18: 4-way valve (blue-blue)
CN19/CN20: connected to crankcase heating cable.
(black-red)
CN24/CN25: Electric heater of chassis (orange-orange)
CN1:L-IN (red)
CN3:N-IN (black)
6. Disconnect the grounding wire (yellow-green) after
removing the handle.
7. Remove the PCB board.
4 COMPRESSOR REMOVE THE COMPRESSOR REMARKS
1. Perform the steps from section 1, steps 5-6 and section 2.
2. Extract the refrigerant gas.
3. Remove the sound insulation material and crankcase
heating cable.
4. Remove the compressor’s terminal cover, and disconnect
the crankcase electric heater wires and the compressor
from the terminal.
5. Remove the discharge pipe and the suction pipe with a
burner.
6. Remove the hex nuts and washers securing the compressor
to the bottom plate.
7. Lift the compressor.
5 4-WAY VALVE REMOVE THE 4-WAY VALVE REMARKS
1. Perform the steps from section 1, steps 5-6 and section 2.
2. Extract refrigerant gas.
3. Remove the electrical parts as described in section 3.
4. Remove the coil screw, then remove the coil.
5. Detach the welded parts of the 4-way valve and the pipe.
CN13
CN8 CN12
CN9 CN11
CN3
CN 30/CN 23/CN 33/CN 26/CN 15
CN10
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