Mitsubishi Outdoor Unit MUZ-WR24NA

(1) Remove the cabinet and panels. (Refer to section 1.)

(2) Disconnect the following connector:

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

(2) Disconnect the following connectors:

(3) Remove the propeller fan nut.

(5) Remove all the screws fixing the fan motor.

NOTE: The propeller fan nut is a reverse thread.;

(1) Remove the cabinet and panels. (Refer to section 1.)

(2) Disconnect the lead wire to the reactor and the following connectors:

CN641 (Defrost thermistor and discharge temperature thermistor)

CN643 (Ambient temperature thermistor)

CN644 (Outdoor heat exchanger temperature thermistor)

(3) Pull out the discharge temperature thermistor from its holder.

(4) Pull out the defrost thermistor from its holder.

(5) Pull out the outdoor heat exchanger temperature thermistor from its holder.

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

(2) Remove the back panel. (Refer to section 1.)

(3) Remove the inverter assembly. (Refer to section 2.)

(4) Recover gas from the refrigerant circuit.

NOTE: Recover gas from the pipes until the pressure gauge shows 0 PSIG.

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

(6) Remove the compressor nuts.

(8) Detach the brazed part of 4-way valve and pipe. (Photo 7);

Warning: This procedure requires trained personnel with PPE!

Lead wire to the reactor disconnected

Disconnect the following connectors

Screw fixing the heat sink support and the separator removed

Fixing screws of the terminal block support and the back panel removed

Screw of the ground wire, screw of the P.C. board cover and screws of the terminal block support removed