Mitsubishi Outdoor Unit MXZ-8C48NAHZ2-U1

Ensure the power supply is turned off

Disconnect the connectors on the multi controller circuit board

Pull out the thermistors from the sensor holder

Remove the service panel. (See Photo 1)

Remove the top panel. (See Photo 1)

Remove the cover panel (front). (Refer to procedure 8(5))

Remove the cover panel (rear). (Refer to procedure 8(6))

Remove the side panel (R). (Refer to procedure 8 (7))

Pull out the lead wire of high pressure switch and high pressure sensor.

Remove the electrical parts box. (See Photo 5)

Remove the electrical parts box

Remove 6 screws (4 x 10) for reactor

Remove the service panel. (See Photo 1)

Remove the top panel. (See Photo 1)

Disconnect the connector, TH7/6 (red), on the multi controller circuit board in the electrical parts box.

Loosen the wire clamps on the top of the electrical parts box. (See Photo 6)

Pull out the thermistor <Suction pipe> (TH6) from the sensor holder. (See Photo 7)

Is the thermistor <Ambient> (TH7) being replaced together with thermistor <Suction pipe> (TH6)?

Remove the linear expansion valve coil (See Photo 11,12)

Remove the electrical parts box (See Photo 5)

Recover refrigerant without spreading it in the air

Remove the welded part of linear expansion valve

Cover parts with a wet cloth to prevent heating and braze pipes to avoid oxidation