Daikin Outdoor Heat Pump RXN09KEVJU

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

1. Remove the right side panel.

Remove the indoor heat exchanger according to the “Removal of Indoor Heat Exchanger”.

1 Remove the screw of the right side panel.

2 Unfasten the hook of the right side panel.

2. Remove the fan rotor and the fan motor.

1 The fan motor has 3 projections on the right side.

1. Check the connection of connector.

2. Check the motor power supply voltage output (pins 4 - 7).

3. Check the motor control voltage (pins 4 - 3).

4. Check the rotation command voltage (pins 4 - 2).

5. Check the rotation pulse (pins 4 - 1).

Fan motor wire breakdown / short circuit check

1. Check the connector for connection.

EV connector correctly connected to the PCB

EV generates latching sound when power is turned off and on

Continuity confirmed when connector is disconnected and checked with a tester

Check the continuity between the pins

If no continuity between the pins, the EV coil is faulty

If continuity is confirmed, the outdoor unit PCB is faulty

Note: The latching sound varies depending on the valve type

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

Removed the 2 screws, which fix the front grille to the main body.

The front grille has 3 hooks on the upper part.

Pressed each hook, and also lifted the grille up to unfasten the hooks.

Pulled the upper part of the front grille out and lifted the lower part up, and then removed the front grille.

The convex marks (...) on the front panel indicate the position of the hooks.

When reassembling, made sure that all the 3 hooks are fastened as they were.

Sign off on the front grille removal

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

1. Disconnect the connecting wires.

 Remove the front grille according to the “Removal of Front Grille”.

1 Remove the screw of the service cover.

2 Pull out the service cover down in the direction of the arrow.

3 The figure shows the connections of wire harnesses.

4 Remove the screw of the wire retaining plate.

5 Loosen the screws of the terminal board and disconnect the connecting wires.