Daikin REYQ8-48PY1B, Руководство по обслуживанию

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SiBE37-701_B Troubleshooting (OP: Unified ON/OFF Controller)
Troubleshooting 382
[CHECK 1] Check on connector of fan motor (Power supply cable)
(1) Turn off the power supply.
Measure the resistance between phases of U,V,W at the motor side connectors (three-core
wire) to check that the values are balanced and there is no short circuiting, while connector
or relay connector is disconnected.
[CHECK 2] (1) Turn off the power supply.
(2) Measure the resistance between Vcc and each phase of U,V,W, and GND and each phase
at the motor side connectors (five-core wire) to check that the values are balanced within the
range of ± 20 %, while connector or relay connector is disconnected.
Furthermore, to use a multiple meter for measurement, connect the probe of negative pole
to Vcc and that of positive pole to GND.
Red U
Measure the resistance
values between phases
U,V,W.
White
Black
V
W
5 Gray GND
Measure the resistance
values between Vcc
and U,V,W, and GND
and U,V,W.
4 Pink
3 Orange
2 Blue
1 Yellow
Vcc
W
V
U