Daikin VRV III-S RXYMQ36 48PVJU Service Manual page 230

SiUS34-907
Power module checking
When using the digital type of multiple tester, make measurement in diode check mode.
The following abnormalities are also doubted besides the PCB abnormality.
h Faulty compressor (ground fault, ground leakage)
h Faulty fan motor (ground leakage)
Troubleshooting
Tester terminal
+ -
C+ U
V
W
U C-
V
W
U C+
V
W
C- U
V
W
Criterion
Not less than 0.3V
(including ∞)*
Not less than 0.3V
(including ∞)*
0.3 to 0.7V
(including ∞)*
0.3 to 0.7V
(including ∞)*
*There needs to be none of each value variation.
Remark
It may take time to
determine the voltage
due to capacitor
charge or else.
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