Daikin Super multi NX E Series

SiBE121135_A Check
Service Diagnosis 240
8.15 Power Module Check
Check No.22
Note: Check to make sure that the voltage between (+) and (–) of the power module (PM1) 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 power
module and the terminals of the compressor with a multi-tester. Evaluate the measurement
results referring to the following table.
∗ The illustration is for 40/50/52/58 class as representative.
Negative (–) terminal of
tester (positive terminal
(+) for digital tester)
Power module (+) UVW Power module (–) UVW
Positive (+) terminal of
tester (negative terminal
(–) for digital tester)
UVW Power module (+) UVW Power module (–)
Resistance is OK. several kΩ ~ several MΩ
Resistance is NG. 0 Ω or ∞
Power module (PM1)
(R16074)