SiUS042113E
Check
Part 6 Service Diagnosis
145
5.14 Power Module Check
Check No.22
Check to make sure that the voltage between (+) and (–) of the power module is about 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
~ several M
Resistance is NG.
0
or
Pin 24: +
Pin 23: U
Pin 22: V
Pin 21: W
Pin 20: –
(R24993)
Summary of Contents for FTXM-V Series
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Page 166: ...Piping Diagrams SiUS042113E 162 Part 8 Appendix RXM24VVJU 3D132217...
Page 171: ...SiUS042113E Operation Limit Part 8 Appendix 167 3 Operation Limit RXM09 12 18 24VVJU 3D133582A...
