Daikin Cooling-Only Outdoor Unit RKN15KEVJU

Warning: Disconnect the connectors of the thermistors from the PCB before proceeding

Thermistors disconnected from the PCB?

Measure the resistance of each thermistor

Select the model of the thermistor

For models directly mounted on the PCB, disconnect the connector for the PCB and measure

Connector for the PCB disconnected?

Measure the resistance of the thermistor

Sign off on the thermistor resistance check

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.

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

Disconnect the refrigerant piping.

Preparation: Remove the electrical box according to the “Removal of Electrical Box / PCBs / Swing Motors”.

Caution: If the refrigerant leaks, repair the spot of leaking, then collect all refrigerant from the unit. After conducting vacuum drying, recharge proper amount of refrigerant.

Caution: In pump-down work, be sure to stop the compressor before disconnecting the refrigerant pipe. If the refrigerant pipe is disconnected with the compressor operating and the stop valve open, air may be sucked in and may generate an over-pressure in refrigeration cycle, thus resulting in pipe rupture or accidental injury.

Place a plastic sheet under the drain pan to prevent from wetting the floor with remaining drain.

If the drain hose is embedded in the wall, disconnect the drain hose beforehand.

Carry out the removal works with 2 wrenches.

When the pipings are disconnected, protect both the openings of pipe and unit from entering of moisture.

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.

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.