DAMA-SM-21-001
Actuator Check
Service Diagnosis
94
5.11 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 (+) 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.
Diagram Power Module Check for FTK(X)09/12
Diagram Power Module Check for FTK(X)18/24
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
∞
Summary of Contents for FTK Series
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