Daikin Outdoor Heat Pump ARXS35G2V1B

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

Pull out the electronic expansion valve coil.

Disconnect the lead wires of the compressor.

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.

RK(X)S20-50G2V1B, ARXS20-50G2V1B

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

RK(X)S20-35G2V1B9, ARXS20-35G3V1B

Voltage between the pins 10 - 11

Hall IC generates the rotation pulse (0 ~ 15 VDC) 4 times between the pins 10 - 12, 10 - 13, when the fan motor is manually rotated once

Sign off on the rotation pulse check

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

Untie the string and open the sound blanket (outer)

Remove the outer panels according to the “Removal of Outer Panels / Fan Motor”

Remove the electrical box according to the 'Removal of Electrical Box'

Lift and remove the sound blanket (outer)

Since the piping ports are torn easily, remove the sound blanket carefully.

Pull the sound blanket (inner) out

Warning: This procedure requires trained personnel with PPE!

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

Is the power supply waveform a sine wave?

Upload a photo of the waveform (Fig.1)

Is there waveform disturbance near the zero cross? (sections circled in Fig.2)

Upload a photo of the waveform disturbance (Fig.2)

Sign off on the power supply waveforms check

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

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

The stop valve cover is united with the shield plate.

When reassembling, make sure to fit the 5 hooks.

1 Remove the screw of the stop valve cover. Pull down the stop valve cover and remove it.

2 Remove the 2 screws and lift the top panel.