Mitsubishi Electric MXZ-2C30VA, Service Manual

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119
Photo 5
Photo 3
Photo 4
Screws of the
relay panel
Screws of
the earth
wires
Discharge temperature thermistor
R.V. coil
Screw of the
power P.C. board
Heat sink
Inverter
P.C. board
Power
P.C. board
Inverter
assembly
Compressor
connector
(CN61)
OPERATING PROCEDURE PHOTOS
2. Removing the inverter assembly, inverter P.C.
board and power P.C. board
(1) Remove the top panel, cabinet and service panel (Refer
to 1).
(2) Disconnect the power supply and indoor/outdoor con-
necting wire and remove the back panel (Refer to 1).
(3) Disconnect the earth wires, the lead wire to the reac-
tor and the following connectors;
<Power P.C. board>
CN912 (R.V coil)
<Inverter P.C. board>
CN931, CN932 (Fan motor)
CN661 (Defrost thermistor, discharge temperature
thermistor and outdoor heat exchanger
temperature thermistor)
CN663 (Ambient temperature thermistor)
CN791, CN792 (LEV A, LEV B)
(4) Remove the compressor connector (CN61).
(5) Remove the screws fixing the relay panel.
(6) Remove the inverter assembly.
(7) Disconnect all connectors and lead wires on the
inverter P.C. board.
(8) Remove the inverter P.C. board from the inverter
assembly.
(9) Remove the screw fixing the power P.C. board.
(10) Disconnect all connectors and lead wires on the
power P.C. board.
(11) Remove the power P.C. board from the inverter
assembly.
3. Removing the R.V. coil
(1) Remove the top panel, cabinet and service panel (Refer
to 1).
(2) Disconnect the power supply and indoor/outdoor
connecting wire and remove the back panel (Refer to 1).
(3) Remove the inverter assembly (Refer to 2).
(4) Remove the R.V. coil.
4. Removing the discharge temperature thermistor,
defrost thermistor and outdoor heat exchanger
temperature thermistor
(1) Remove the top panel, cabinet and service panel (Refer
to 1).
(2) Disconnect the power supply and indoor/outdoor con-
necting wire and remove the back panel (Refer to 1).
(3) Remove the inverter assembly (Refer to 2).
(4) Pull out the discharge temperature thermistor from its
holder.
(5) Pull out the defrost thermistor from its holder (Photo 6).
(6) Pull out the outdoor heat exchanger temperature ther-
mistor from its holder (Photo 6).
OBH584G