Mitsubishi Split-Type Air Conditioner PUY-A42NHA6

Upload a photo of the service panel before removal

Service panel removed successfully

Upload a photo of the top panel before removal

Valve bed fixing screws and ball valve and stop valve fixing screws removed successfully

Right side panel removed successfully

Upload a photo of the linear expansion valve before removal

Linear expansion valve removed successfully

Refrigerant recovered successfully

(1) Remove the service panel. (See Figure 1)

(2) Remove the top panel. (See Figure 1)

[Removing the 4-way valve coil]

(3) Remove 4-way valve coil fixing screw (M4 × 6).

(4) Remove the 4-way valve coil by sliding the coil toward you.

(5) Disconnect the connector 21S4 (green) on the controllervcircuit board in the electrical parts box.

[Removing the linear expansion valve coil]

(3) Remove the linear expansion valve coil by sliding the coilvupward.

(4) Disconnect the connectors, LEV-A (white), on the controllervcircuit board in the electrical parts box.;

Warning: This procedure requires trained personnel with PPE!

Connector TH7 (red) on the controller circuit board disconnected

Clamp for the lead wire in the rear of the electrical parts box loosened

Thermistor <Ambient> (TH7) pulled out from the sensor holder

Note: In case of replacing thermistor <Ambient> (TH7), replace it together with thermistor <2-phase pipe> (TH6), since they are combined together.

Thermistor <2-phase pipe> (TH6) removed

Sign off on the thermistor replacement

(1) Remove the service panel. (See Figure 1)

(2) Remove the top panel. (See Figure 1)

(3) Remove the electrical parts box. (See Photo 3)

(4) Remove 4 reactor fixing screws (4 × 10) and remove the reactor.

(4) Remove 2 capacitor band fixing screws (4 × 10) and remove the capacitor.

Note: The reactor and capacitor is attached to the rear of the electrical parts box.;

Remove 3 valve bed fixing screws (4 × 10), 4 ball valve and stop valve fixing screws (5 × 16), then remove the valve bed

Remove 4 right side panel fixing screws (5 × 12) in the rear of the unit and then remove the right side panel

Remove the welded part of 4-way valve

Note 1: Recover refrigerant without spreading it in the air

Note 2: The welded part can be removed easily by removing the right side panel