Daikin FTXN24KVJU Service Manual download pdf (Page 134)

Check SiUS041111

126 Service Diagnosis

15/18/24 class

5.13 Power Module Check

Check No.22

Note: Check to make sure that the voltage between (+) and (–) of the diode bridge (DB1) is approx.

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 DB1 and the

terminals of the compressor with a multi-tester. Evaluate the measurement results for a

judgment.

Tester

–~~+

1234

–

(R14433)

Negative (–) terminal of

tester (positive terminal

(+) for digital tester)

DB1 (+) UVW DB1 (–) UVW

Positive (+) terminal of

tester (negative terminal

(–) for digital tester)

UVW DB1 (+) UVW DB1 (–)

Resistance in OK several k ~ several M

Resistance in NG 0  or 

1 2 ... 129 130 131 132 133 134 135 136 137 138 139 ... 243 244

No comments

Daikin FTXN24KVJU Service Manual Page 134