Daikin Cooling-Only Outdoor Unit RKS35G2V1B

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

Removed the 2 nuts of the compressor?

Warning: Be careful not to get yourself burnt with the pipes and other parts that are heated by the gas brazing machine.

Warning: If the refrigerant gas leaks during work, ventilate the room. (If the refrigerant gas is exposed to flames, toxic gas may be generated.)

Warning: Since it may happen that the refrigerant oil in the compressor catches fire, prepare wet cloth so as to extinguish fire immediately.

Caution: From the viewpoint of global environment protection, do not discharge the refrigerant gas in the atmosphere. Make sure to collect all the refrigerant gas.

Restored the piping by nonoxidation brazing?

Prevented the carbonization of the oil inside the four way valve and the deterioration of the gaskets affected by heat? (Keep below 120°C.)

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 successfully disconnected?

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.

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

The stop valve cover is united with the shield plate.

When reassembling, make sure to fit the 5 hooks.

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

2 Remove the 2 screws and lift the top panel.

EV connector correctly connected to the PCB

EV generates latching sound when power is turned off and on

Continuity present when connector is disconnected and checked with a tester

Continuity between pins 1 - 6 and 3 - 6

Continuity between pins 2 - 5 and 4 - 5

If no continuity between pins, EV coil is faulty

If continuity is confirmed, outdoor unit PCB is faulty

Note: Latching sound varies depending on the valve type

Sign off on the electronic expansion valve check

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

You can remove the main PCB when you disconnect the lead wires on the terminal board without removing the electrical box.

2 Remove the screw on the terminal board.

3 Release the 2 earth terminals.

5 Unfasten the 3 hooks on the upper side.

6 Lift and pull out the main PCB.