Daikin Outdoor Heat Pump RXS60F3V1B

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

If fuse is melted, check the outdoor fan motor for proper function

If NG in step 2 or 4, select the defective part

If OK in both steps 2 and 4, replace the outdoor unit PCB

Warning: This check requires trained personnel with PPE!

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

Upload a photo of the measured waveform

Is the power supply waveform a sine wave?

Is there waveform disturbance near the zero cross?

Sign off on the power supply waveform check

Warning: Be sure to wait for 10 minutes or more after turning off all power supplies before disassembling work.

Remove the screw and remove the four way valve coil.

Warning: Be careful not to get yourself burnt with the pipes and other parts that are heated by the gas brazing machine.

Warning: If the refrigerant gas leaks during work, ventilate the room. (If the refrigerant gas is exposed to flames, toxic gas may be generated.)

Caution: From the viewpoint of global environment protection, do not discharge the refrigerant gas in the atmosphere. Make sure to collect all the refrigerant gas.

Restore the piping by nonoxidation brazing.

It is required to prevent the carbonization of the oil inside the four way valve and the deterioration of the gaskets affected by heat. (Keep below 120°C.) For the sake of this, wrap the four way valve with wet cloth and provide water so that the cloth does not dry.

Warning Be sure to wait for 10 minutes or more after turning off all power supplies before disassembling work.

1 Remove the 4 screws and lift the top panel.

Take care not to cut your finger by the fins of the outdoor heat exchanger.

2 Remove the 4 screws and remove the discharge grille.

Slide the discharge grille upwards and remove it.

The discharge grille has 4 hooks.

3 Remove the 6 screws of the front panel.

4 Push the front panel and lift the shield plate to unfasten the hooks.

Warning: Be sure to wait for 10 minutes or more after turning off all power supplies before disassembling work.

Preparation: Remove the electrical box according to the “Removal of Electrical Box”.

Disconnect the connectors from the service monitor PCB [S52] [S102].

Detach the 4 clamps with pliers.

Remove the screws of the terminal board and the earth wire.

Unfasten the hook on the right.

Disconnect the 2 connectors for the reactor [HR1] [HR2].