Bosch Climate 5000 Series Service Manual page 90

9 0 | Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Multi Zone Outdoor Units
9.4.3 Removing the electrical parts
1. Follow steps outlined in Section 9.4.2.
IPM board
PCB board
Figure 155
2. Disconnect the fan motor connector (5p, white) from the IPM board.
Figure 156
Data subject to change
3. Disconnect following connection wires and connectors from the IPM board.
DC Fan
Driver board
Figure 157
4. Remove the screws of the IPM board to remove it.
5. Disconnect the connectors and wires connected from the PCB.
CN1, CN2, CN3, CN6, CN9 and U, V, W
CN2 (yellow)
CN1 (red)
CN6 (black )
CN3 ( yellow)
U V W (black )
CN9 (10p,white)
Connectors:
CN8: Discharge temperature sensor (2p, white)
CN12: Heat sink 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: SA, 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)
08.2020 | Bosch Thermotechnology Corp.
Service Manual