Daikin Outdoor Heat Pump RZQ125KV4A

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) and side panel accordance with the Procedure to remove Outside Panels.

Pull out the outdoor air thermistor to the front, and then slide this thermistor to the right to remove it.

Pinch the mounting spring that fixes the discharge pipe thermistor to pull out this thermistor.

Press the fixing section of the suction pipe thermistor to pull out this thermistor.

Pull the fixing bracket of the heat exchanger’s distribution pipe thermistor to the front, and then remove this thermistor.

Press the fixing section of the intermediate heat exchanger thermistor to pull out this thermistor.

The heat exchanger’s distribution pipe thermistor, intermediate heat exchanger thermistor, and liquid pipe thermistor are jointed together with a single connector. Consequently, these 3 thermistors should be replaced at the same time.

Press the fixing section of the liquid pipe thermistor to pull out this thermistor.

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

Remove the front panel (2) and the front piping cover bracket

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

Remove 1 out of the nuts that fix the compressor

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.

Unscrew the 5 screws that fix the stop valve mounting plate, and then remove this mounting plate.

Remove the gas piping and the liquid piping.

Remove the compressor terminal cover.

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

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

According to the procedure for the removal related to the outside panel, remove the front panel (2) and the side panel.

According to the procedure to remove switch box, remove the switch box.

Four way valve removed only after the refrigerant is completely recovered?

1 Unscrew the 1 screw that fixes the four way valve coil, and then remove this coil.

2 Remove brazing from the 4 places, and then remove the four way valve.

Four way valve temperature kept below 120°C during brazing work?

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

Front panel removed in accordance with the Procedure to remove Outside Panels.

Is it possible to remove the top panel?

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 connectors to be disconnected.

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.

3 screws that fix the reactor unscrewed and reactor removed.