Mitsubishi Outdoor Unit MUY-D30NA

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

Disconnect the Electronic control P.C. board

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

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

Sign off on the compressor and 4-way valve replacement

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

Warning: This procedure should be performed by trained personnel only

Sign off on the reactor replacement

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

Disconnect the following connectors: <Electronic control P.C. board> CN931 and CN932 (Fan motor)

Remove the screws fixing the outdoor fan motor