Daikin Outdoor Heat Pump RZQ100KV4A

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

Remove the top panel and the front panel (2) accordance with the Procedure to remove Outside Panels.

Before removing the solenoid valve or the electronic expansion valve, be sure to recover the refrigerant.

Precaution for mounting the coil for the electronic expansion valve

Align the dimple of the electronic expansion valve and the stopper of the electronic expansion valve coil, and then press them in until you hear them click.

1 Disconnect the pressure sensor connector (X17A).

2 Use 2 spanners to remove the pressure sensor.

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

Front panel (2) and the front piping cover bracket removed

Be sure to remove the compressor only after the refrigerant is completely recovered.

1 out of the nuts that fix the compressor is located outside of the partition panel.

Be sure to cut 3 pipes by using a pipe cutter before disconnecting the brazed sections of pipes. A sudden disconnection of the brazed sections can cause oil to catch fire.

5 screws that fix the stop valve mounting plate unscrewed and mounting plate removed

Gas piping and the liquid piping removed

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

Remove the front panel (2) accordance with the Procedure to remove Outside Panels.

Unscrew the 4 screws that fix the air discharge grille and disengage the 4 hooks at the top and bottom of the grille, and then remove this air discharge grille.

Unfasten the fan lock nut that fixes the propeller fan.

Remove the front panel (1) accordance with the Procedure to remove Outside Panels.

Remove the connector (X206A, X207A) for fan motor from the PCB. In order to disconnect the connector, do not pull the lead wire. Hold the connector part and then press the hooks.

Cautions in mounting the motor: Be sure to fix the motor lead wire with a clamp. Not heeding this caution will cause the entanglement of the lead wire around the fan, which will result in damage to the fan.

Cut the clamp of lead wires (located on the reverse side of the stop valve mounting plate).

Pull out the lead wires through the opening of the partition panel, and then unclamp the 3 clamps. (Note that the partition plate has 3 hooks.)

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

If the top panel cannot be removed, it is possible to pull the switch box to the front without removing the top panel.

Upload a photo of the disconnected connectors

Precaution for mounting the pressure sensor: To prevent the lead wire from hanging over the PCB, hook the lead wire of 160 to 170 mm in length from the front end of the connector on the clamp.

Each connector on the PCB disconnected

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

Remove the top panel and the front panel (2) accordance with the Procedure to remove Outside Panels.

1 Disconnect the connector (X205A) from the PCB.

2 While pressing the 2 hooks, remove the PCB (A2P).

Remove the switch box accordance with the Procedure to remove the Switch Box.

1 Remove the clamp from the compressor harness.

2 Press the hooks to remove the terminal block.