3
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Components
Service manual
54
RXQ25+3 3 3
35AMV1B
Split Sensira R32 BBOP
ESIE21-16 – 2022.02
Compressor motor winding
measurements are correct?
Action
Yes
Continue with the next step.
No
Replace the compressor, see
5
Measure the continuity of the U, V and W wires between the compressor and
the PCB. If no continuity, correct as needed, see
133].
6
Connect the Faston connectors to the compressor wire terminals U, V and W
V
U
W
U
Wire terminal U
V
Wire terminal V
W
Wire terminal W
7
Install the compressor wire terminals cover.
8
Install the compressor insulation.
9
Turn ON the power using the respective circuit breaker.
10
Start the unit operation via the user interface.
CAUTION
NEVER operate the compressor with the compressor wire terminals cover removed.
11
Wait for – or create condition to operate the compressor.
12
Once the compressor operates, measure the U-V-W inverter voltages.
ALWAYS measure at the PCB side.
Result:
All measurements MUST be the same.
Inverter voltage measurements are
correct?
Action
Yes
Continue with the next step.
No
Perform a check of the appropriate PCB,
see
44].
13
While compressor is operating, measure the current in each phase U, V and
W. ALWAYS measure at the PCB side.
Result:
All measurements MUST be the same.