Daikin Outdoor Heat Pump RXS30HVJU

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

Thermistors disconnected from the PCB?

Measure the resistance of each thermistor

Refer to the table and graph for the relationship between normal temperature and resistance

Does the measured resistance match the expected values?

Sign off on the thermistor resistance check

Warning: Check the main circuit for short circuit before this check.

Main circuit checked for short circuit?

Warning: Be careful never to touch any live parts.

Voltage reading according to the model's drawing

Measure the power supply waveform between No. 1 and No. 2 on the terminal board

Check to see if the power supply waveform is a sine wave

Check to see if there is waveform disturbance near the zero cross

Sign off on the power supply waveforms check

Warning: This procedure requires trained personnel with PPE!

Voltage of 320 ± 30 V is applied

Control voltage between the pins 3 - 4

Rotation command voltage between the pins 2 - 4

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

Outdoor fan motor functions properly when fuse is melted

Check the connection of connector

Check the motor power supply voltage output (pins 4 - 7)

Check the motor control voltage (pins 4 - 3)

Check the rotation command voltage (pins 4 - 2)

Check the rotation pulse (pins 4 - 1)

Sign off on the Fan Motor Connector Output Check