Mitsubishi Electric MXZ-2C20NA2-U1, Service Manual

Page: 109 / 114

OPERATING PROCEDURE
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(1) Remove the top panel, the service panel, and the front
panel (Refer to section 1).
(2) Disconnect the power supply cord and indoor/outdoor
connecting wires.
(3) Disconnect the connector of CNF1 on the outdoor control
P.C. board.
(4) Remove the propeller fan.
(5) Remove the fan motor.
NOTE: The propeller fan nut is a reverse thread.
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(1) Remove the top panel, the service panel, and the front
panel (Refer to section 1).
(2) Disconnect the power supply cord and indoor/outdoor
connecting wires, and remove the back panel.
(3) Recover gas from the refrigerant circuit.
NOTE:
Recover gas from the pipes until the pressure
gauge shows 0 PSIG.
(4) Disconnect the compressor lead wire from the terminal of
the compressor (U, V, W).
(5) Disconnect the outdoor control P.C. board connectors:
CNF1, CNTH1, CNTH2, CN63H, CN712, CN791, CN792,
CN793, CN794 (
MXZ-4C )
(6) Remove all the screws fixing the electrical parts, and
remove the electrical parts.
(7) Remove the propeller fan.
(8) Remove all the screws fixing the separator, and remove
the separator.
(9) Remove the sound proof felt.
(10) Detach all the brazed parts of the compressor suction
and discharge pipes (Photo 18).
(11) Remove all the compressor nuts and remove the compres-
sor (Photo 18).
(12) Detach all the brazed parts of 4-way valve and pipes.
109
4-way valve
R.V. coil
Brazed parts
Photo 17
Photo 16
Photo 15
Propeller fan
Screws of the outdoor fan motor
Screws of the electrical parts
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