Daikin Outdoor Heat Pump 3MXS40K3V1B

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

1 Remove the 4 screws and remove the top panel.

The illustrations are for 3-room models as representative.

2 Remove the 6 screws of the front panel.

3 Remove the screw of the shield plate.

4 Unfasten the 2 hooks and remove the shield plate.

5 Unfasten the 4 hooks and remove the front panel.

6 Remove the 4 screws and remove the discharge grille.

7 Remove the 2 screws of the stop valve cover.

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

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

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

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 non-oxidation brazing.

2. It is required to prevent the carbonization of the oil inside the four way valve and the deterioration of the gaskets affected by heat. (Keep below 120°C (248°F).) For the sake of this, wrap the four way valve with wet cloth and provide water so that the cloth does not dry.

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

1 Pull out the electronic expansion valve coils.

2 Remove the screw and remove the four way valve coil.

The cooling only models have no four way valve coil.

3 Open the putty and remove the liquid pipe thermistors.

When reassembling, meet the edge of the thermistor and the fixture.

4 Pull out the gas pipe thermistors.

Be careful not to lose the clip.

The positions of the clamp and outdoor heat exchanger thermistor differ depending on the model.

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.

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

2 Unfasten the upper hook and remove the service monitor PCB.

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

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

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

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

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

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 non-oxidation brazing.

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