Daikin Air Conditioner RK36NMVJU

Warning: This procedure requires trained personnel with PPE!

If power is not turned off, stop the procedure and turn off the power

Inverter analyzer installed instead of compressor?

Ensure the charged voltage of the built-in smoothing electrolytic capacitor drops to 10 VDC or below before carrying out the service work

Enter the charged voltage of the built-in smoothing electrolytic capacitor

Power transistor test operation activated from the indoor unit?

Sign off on the Inverter Analyzer Check

Warning: Ensure the voltage between (+) and (–) of the power module is approximately 0 V before proceeding

Disconnect the compressor harness connector from the outdoor unit PCB

Compressor harness connector disconnected successfully?

Press the protrusion on the connector to disengage it

Connector disengaged successfully?

Measure resistance between the terminals of the power module and the terminals of the compressor with a multimeter

Sign off on the power module check

Warning: Disconnect the connectors of the thermistors from the PCB before proceeding

Thermistors disconnected from the PCB?

Note: The room temperature thermistor is soldered on the PCB

Connector to the control PCB disconnected before measuring the resistance?

If the connector of indoor heat exchanger thermistor is soldered on the PCB, remove the thermistor before measuring the resistance

Indoor heat exchanger thermistor removed and resistance measured?

Sign off on the thermistor resistance check

Warning: Ensure that the voltage of 320 + 100 V ~ 320 - 50 V is applied

Set operation off and power off. Disconnect the connector S70 or S71

Control voltage between the pins 4 - 3

Rotation command voltage between the pins 4 - 2

Keep operation off and power off

Connect the connector S70 or S71

4 rotation pulses (0 ~ 15 VDC) at the pins 4 - 1 when the fan motor is rotated 1 turn by hand

Sign off on the rotation pulse check

Check the connection of connector

Check the motor power supply voltage output

Check the motor control voltage

Check the rotation command voltage

Sign off on the connector output check