Daikin 4MXS-R Series, Руководство по обслуживанию

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Check SiUS121736EA
219 Service Diagnosis
8.15 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 (+) or (–) terminal of the power
module and the U, V or W terminal of the compressor with a multimeter. Evaluate the
measurement results referring to the following table.
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
∞
(R24593)
DC–
DC+
W V U