Bosch Climate 5000 Series Service Manual page 94

Service Manual
5. Disconnect wires between IPM board and PCB as shown below.
CN1 (5p,white)
CN14 (3p,white)
CN3 (red or brown)
CN5 (blue)
Figure 124
6. Remove the IPM board.
Figure 125
7. Disconnect the connectors and wires connected the PCB from other parts.
Connectors:
CN17: T3/T4 Temperature sensor (2p/2p,white)
f
CN7: Discharge temperature sensor (2p,white)
f
CN15:T2B-A,B,C temperature sensor (2p/2p/2p,white)
f
CN18/CN19/CN22: Electronic expansion valve A,B,C
f
(6p/6p/6p,red/red/red)
CN25/CN23/CN20: S-A,S-B,S-C (3p/3p/3p,white/white/white)
f
Wires:
CN1/CN2: 4-way valve (blue-blue)
f
CN5/CN6: Crankcase heating cable (red-red)
f
CN3:L1-IN (red)
f
CN4:L2-IN (black)
f
9 4 |
Figure 126
8. Disconnect the grounding wire (yellow-green).
Figure 127
9. Remove PCB.
Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Multi Zone Outdoor Units (01.2023)
CN17 CN15 CN7
CN18/CN19/CN22
CN1/CN2 CN5/CN6
CN20
CN23
CN25
CN3
CN4