SiUS091628EA
Check
Service Diagnosis
110
5.13 Power Module Check
Check No.22
Check to make sure that the voltage between (+) and (–) of the power module is approximately
0 V before checking.
Disconnect the compressor harness connector from the outdoor unit PCB. To disengage the
connector, press the protrusion on the connector.
Follow the procedure below to measure resistance between the terminals of the power module
and the terminals of the compressor with a multimeter. Evaluate the measurement results
referring to the following table.
09/12 class
Positive terminal (+) of
digital multimeter
Power module
(+)
UVW
Power module
(–)
UVW
Negative terminal (–) of
digital multimeter
UVW
Power module
(+)
UVW
Power module
(–)
Resistance is OK.
several k
Ω
~ several M
Ω
Resistance is NG.
0
Ω
or
∞
Pin 24: +
Pin 23: U
Pin 22: V
Pin 21: W
Pin 20: –
(R20703)
Summary of Contents for FFQ09Q2VJUFFQ12Q2VJUFFQ15Q2VJUFFQ18Q2VJURX09QMVJURX12QMVJURX15QMVJURX18QMVJU
Page 12: ...SiUS091628EA 1 List of Functions Part 1 List of Functions 1 Functions 2...
Page 14: ...SiUS091628EA 3 Specifications Part 2 Specifications 1 Specifications 4...
Page 120: ...Check SiUS091628EA 109 Service Diagnosis 15 18 class R20701 1 2 3 4 Multimeter...
Page 122: ...Check SiUS091628EA 111 Service Diagnosis 15 18 class R20704 W V U DC_P1 DC_N1...