Mitsubishi Outdoor Unit MUY-D36NA

Remove the screws of the service panel

Remove the screws of the top panel

Remove the screw of the valve cover

Remove the screws of the cabinet

Remove the screws of the back panel

Remove the top panel, cabinet, service panel and the back panel.

Recover gas from the refrigerant circuit until the pressure gauge shows 0 PSIG.

Detach the brazed part of the suction and the discharge pipe connected with compressor.

Detach the brazed part of 4-way valve and pipe.

Remove the top panel, cabinet, service panel and the back panel

Disconnect the following connectors on the Electronic control P.C. board: CN931 and CN932 (Fan motor), CN795 (LEV), CN661 (Discharge temperature thermistor, defrost thermistor (MUZ) and outdoor heat exchanger temperature thermistor), CN663 (Ambient temperature thermistor), CN681 (High pressure switch) (MUZ)

Disconnect the following connectors on the Noise filter P.C. board: CN912 (4-way valve) (MUZ)

Disconnect the connectors on the Compressor

Disconnect the connectors on the Reactor

Remove the screws fixing the relay panel

Disconnect all connectors and lead wires on the electronic control P.C. board

Remove the electronic control P.C. board from the inverter assembly

Remove the top panel, cabinet, service panel and the back panel

Disconnect CN661 (Discharge temperature thermistor, defrost thermistor (MUZ) and outdoor heat exchanger temperature thermistor)

Disconnect CN663 (Ambient temperature thermistor)

Pull out the defrost thermistor from its holder (MUZ)

Pull out the discharge temperature thermistor from its holder

Pull out the outdoor heat exchanger temperature thermistor from its holder

Pull out the ambient temperature thermistor from its holder

Sign off on the thermistors replacement

(1) Remove the top panel, cabinet, service panel and the back panel. (Refer to 1.)

(2) Disconnect the following connectors:

<Electronic control P.C. board>

(4) Remove the screws fixing the outdoor fan motor.

(5) Remove the outdoor fan motor.;