Bosch Climate 5000 Series Service Manual page 74

7 4 | Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Multi Zone Outdoor Units
5. Remove the IPM board.
Figure 93
6. Disconnect below connectors and wires from PCB.
Connectors:
CN17:T3/T4 temperature sensor (2p/2p,white)
CN7: Discharge temperature sensor (2p,white)
CN15:T2B-A,B temperature sensor (2p/2p,white)
CN18/CN19: Electronic expansion valve A,B (6p/6p,red/red)
CN25/CN23: S-A,S-B (3p/3p,white/white)
Wires:
CN1/CN2: 4-way valve (blue-blue)
CN5/CN6: Crankcase heating cable (red-red)
CN3:L-IN (red)
CN4:N-IN (black)
C N15
CN17
CN5/CN6
CN1/CN2
Figure 94
Data subject to change
CN18/CN19
CN7 7
CN25/CN23
CN 4
CN 3
7. Disconnect the grounding wire (yellow-green) after removing the big handle
and the right-rear panel.
Figure 95
8. Remove PCB and replace as needed.
Figure 96
Service Manual
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08.2020 | Bosch Thermotechnology Corp.