Mitsubishi Electric MXZ-4E72VA-E1 Service Manual page 128

OPERATING PROCEDURE
3. Removing the fan motor
(1) Remove the service panel, the top panel and the front
panel (Refer to 1).
(2) Disconnect the power supply and indoor/outdoor connect-
ing wire.
(3) Disconnect the connector CNF1 on the outdoor control P.C.
board.
(4) Remove the propeller fan.
(5) Remove the fan motor.
4. Removing the expansion valve
(1) Remove the service panel and the top panel (Refer to 1).
(2) Disconnect the power supply and indoor/outdoor connect-
ing wire.
(Gas recovery is not required if the unit is pumped down.)
(3) Remove the LEV coils.
(4) Detach the brazed parts of the expansion valves and
pipes.
5. Removing the defrost heater
(1) Remove the service panel, the top panel and the front
panel (Refer to 1.).
(2) Disconnect the power supply and indoor/outdoor connect-
ing wire.
(3) Disconnect the defrost heater lead wires from CN714 on
the outdoor control P.C. board.
(4) Remove the defrost heater lead wires from the lead
clamp.
(5) Remove the screws of the defrost heater.
(6) Remove the heater protector and the defrost heater.
OBH723G
Photo 8
Propeller fan
Screws of
the outdoor fan motor
Screws of
the defrost heater
Photo 9
Soundproof
felt
Expansion
coils
128
PHOTOS
Screw of
the electrical parts
Heater
protector
LEV valves