Power Module Check - Daikin FTXS30LVJU Service Manual

Check

5.15 Power Module Check

Check No.22
Note: Check to make sure that the voltage between (+) and (–) of the power module is approx. 0 V before
checking.
 Disconnect the compressor harness connector from the outdoor unit PCB. To disengage the
 Follow the procedure below to measure resistance between the terminals of the power module
Negative (–) terminal of
tester (positive terminal
(+) for digital tester)
Positive (+) terminal of
tester (negative terminal
(–) for digital tester)
Resistance is OK.
Resistance is NG.
09/12 class
153
connector, press the protrusion on the connector.
and the terminals of the compressor with a multi-tester. Evaluate the measurement results
referring to the following table.
Power module UVW
(+)
UVW Power module
(+)
several k ~ several M
0  or 
Power module UVW
(–)
UVW Power module
Power module
(R16069)
Service Diagnosis
SiUS091133
(–)