Daikin Outdoor Heat Pump RXS25G2V1B9

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 10 minutes or more after turning off all power supplies before disassembling work.

Screw on the terminal board removed

Forced operation button PCB disconnected

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

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

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

1 Remove the screw and remove the reactor.

2 The partition plate has a hook on the lower side. Lift and pull the partition plate to remove.

Warning: This procedure 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 waveforms check

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

Remove the sound blanket (top). Since the piping ports are torn easily, remove the sound blanket carefully.

Untie the string and open the sound blanket (outer).

Lift and remove the sound blanket (outer).

Pull the sound blanket (inner) out.

Pull the sound blanket (bottom) out.

Sign off on the sound blanket removal