Daikin 4MXL-T Series User Manual

SiUS121827E Check
Part 6 Service Diagnosis 245
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.
R6000526
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 kΩ ~ several MΩ
Resistance is NG. 0 Ω or ∞
DC+
W
U
V
DC–

Daikin 4MXL-T Series Specifications

General

Brand	Daikin
Model	4MXL-T Series
Category	Air Conditioner
Language	English