Bosch BMS500-AAU036-1AHCXC - EXV Check

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Service Manual
Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Multi Zone Outdoor Units (01.2023)
5. EXV check
Step 1. Disconnect EXV connectors from PCB
Figure 91
Step 2. Check the resistance value on EXV coil
Color of lead wire Normal Value
Red- Blue
Approximately 50Ω
Red - Yellow
Brown-Orange
Brown-White
Table 51