Daikin Outdoor Unit Air Conditioner RZR18PVJU

Warning: Ensure the power supply is turned OFF before starting the procedure

Models FCQ18~42PAVJU, FAQ18 · 24PVJU are not applicable for this check

Is your model applicable for this check?

If your model is not applicable, stop the procedure

Measure the resistance between phases of U

Measure the resistance between phases of V

Measure the resistance between phases of W

Are the resistance values balanced?

Warning: This procedure requires trained personnel with PPE!

Disconnect the thermistor from the PCB

Upload a photo of the table with the measured values

Do the measured values correspond with the values in the table?

Sign off on the thermistor check

Warning: Do not touch the energized part (high voltage part) for at least 10 minutes after the power is turned OFF.

Be sure to touch the ground terminal with a hand to release static electricity from the body (to prevent PCB from being damaged).

Residual electric charge of the power transistor (should be DC 50V or less)

Remove the wire connecting the power transistor and the compressor. Remove it from the compressor terminal side. Be careful not to deform Faston terminal at the end of the relay wire.

Resistance measurement using an analog tester

Is the resistance value equal to 5 times or more than the other resistance values?

Sign off on the power transistor check