Daikin Cooling-Only Outdoor Unit RKS25G2V1B9

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

Take care not to cut your finger by the fins of the outdoor heat exchanger.

1 Remove the screw of the stop valve cover. Pull down the stop valve cover and remove it.

The stop valve cover is united with the shield plate.

When reassembling, make sure to fit the 5 hooks.

2 Remove the 2 screws and lift the top panel.

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

Sound blanket (top) removed carefully to avoid tearing the piping ports?

String untied and sound blanket (outer) opened?

Sound blanket (outer) lifted and removed?

Sound blanket (inner) pulled out?

Sound blanket (bottom) pulled out?

Sign off on the sound blanket removal

Warning: Be sure to wait 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 connector for the overload protector [S40]

Disconnect the connector for the four way valve coil [S80]

Disconnect the 2 connectors for the reactor

Disconnect the relay connector for the compressor

Disconnect the connector for the electronic expansion valve coil [S20]

Pull out the outdoor heat exchanger thermistor. Be careful not to lose the clip for the thermistor.

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

Enter the voltage between (+) and (–) of the diode bridge (DB1)

Measure the resistance between the pins of the DB1.

Enter the resistance between the pins of the DB1

Is the resistance ∞ or less than 1 kΩ?

If the resistance is ∞ or less than 1 kΩ, short circuit occurs on the main circuit.

Sign off on the main circuit short check

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

Upload a photo of the tester reading

Sign off on the thermistor resistance check