Daikin 3-Zone Cooling-Only Outdoor Unit 3MXS52KVM

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

Detach the fixing tape of the electrical box cover

Unfasten the 4 hooks at the mark of the electrical box cover

Lift the electrical box cover up and remove it

Detach the clamp and disconnect the connector for the fan motor [S70]

Release the fan motor lead wire from the hooks

Disconnect the connectors for the electronic expansion valve coils

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

Refrigerant gas is empty in the circuit

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.)

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.

Restore the piping by nonoxidation brazing.

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

In case of difficulty with gas brazing machine:

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

Before working, make sure that the refrigerant gas is empty in the circuit.

Be sure to apply nitrogen replacement when heating up the brazed part.

The cooling only models have no four way valve coil.

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.)

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.

1. Restore the piping by nonoxidation brazing.

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 heat exchanger.

Remove the 4 screws (2 on both sides) of the top panel.

Remove the 6 screws of the front panel.

Remove the screw of the shield plate.

Slide the shield plate to the left to unfasten the hooks and remove the shield plate.

Unfasten the upper 2 hooks. Align the position of hole of the upper hook to pull the front panel out.

Lift the front panel up to unfasten the left side hooks. The front panel has 3 hooks on the left.

Unfasten the right side hook and remove the front panel.

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

1. Remove the service monitor PCB.

2 Remove the screw of the terminal board and open it.

3 Disconnect the connectors [S52] [S102] from the service monitor PCB.

4 Unfasten the upper hook and pull the service monitor PCB upward to remove.

[AC1] [AC2] : for power supply [S10] : for transmission

1 Disconnect the connectors for the terminal board on the right side.