Daikin Outdoor Heat Pump ARXS20G2V1B

Warning: Ensure that the voltage between (+) and (–) of the diode bridge (DB1) is approx. 0 V before proceeding.

Voltage between (+) and (–) of the diode bridge (DB1) is approx. 0 V?

Disconnect the compressor harness connector from the outdoor unit PCB. To disengage the connector, press the protrusion on the connector.

Compressor harness connector disconnected from the outdoor unit PCB?

Measure resistance between the terminals of the DB1 and the terminals of the compressor with a multi-tester.

Enter the resistance measurement

Is the resistance measurement within the acceptable range?

Sign off on the power module 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.

Remove the sound blanket (top).

Pull the sound blanket (inner) out.

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

Release the discharge pipe thermistor

Be careful not to lose the clip for the thermistor.

Pull out the outdoor heat exchanger thermistor

Be careful not to lose the clip for the thermistor.

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

Preparation: Remove the panels and disconnect the connector for the fan motor according to the “Removal of Outer Panels / Fan Motor”.

Disconnect the 2 connectors for the reactor.

Disconnect the connector for the compressor [S30].

When reassembling, coil the excessive lead wire and hang the loop on the hook.

Disconnect the connectors for the magnetic relay [S50] and for the thermistors [S90].

Disconnect the connectors for the filter PCB [S10] and for the overload protector [S40].

Disconnect the connectors for the electronic expansion valve coil [S20] and for the four way valve coil [S80].

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

1. Remove the reactor. Preparation

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.

When reassembling, fit the lower hook into the bottom frame.;