Daikin Outdoor Heat Pump RXN18KEVJU

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

Warning: Dangerous: High voltage

A high voltage is applied to all the electric circuits of this product including thermistors.

When the signal receiver catches a signal from the remote controller, the receiving tone sounds and the operation lamp blinks immediately to confirm the signal reception.

When the ON/OFF button is kept pressed for 5 seconds, the forced cooling operation is performed for about 15 minutes.

1 Open the front panel to the position where it stops.

2 Slightly push up the center knob of the air filter and unfasten the hooks.

3 Pull out the air filter downward and remove it.

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

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

1 Remove the screw and remove the drip proof plate.

3 Pull out the indoor heat exchanger thermistor.

4 Remove the screw of the ground.

5 Remove the screws of the connection wires.

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 continuity between the pins

Note: The latching sound varies depending on the valve type

Sign off on the electronic expansion valve check

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.

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

Enter the play between the side face of the rotor and the bottom frame in mm

Fan motor and the fan rotor reassembled correctly

Sign off on the fan motor / fan rotor removal