Mitsubishi Electric MUZ-GC25VA-E1 Service Manual page 43

Split-type, heat pump air conditioners
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OPERATING PROCEDURE
2. Removing the inverter assembly, inverter P.C. board
(1) Remove the cabinet and panels. (Refer to 1.)
(2) Disconnect the earth wires (See Photo 3.), the lead wire to
the reactor and the following connectors;
<Inverter P.C. board>
CN641 (Defrost thermistor and discharge temperature
thermistor)
CN643 (Ambient temperature thermistor)
CN721 (4-way valve)
CN771 (Fan motor)
CN724 (LEV)
CN772 (Defrost heater GC25VAH)
(3) Disconnect the compressor connector (CN61).
(4) Remove the screws fixing the relay panel. (See Photo 3.)
(5) Remove the inverter assembly. (See Photo 4.)
(6) Remove the inverter P.C. board from the inverter assembly.
3. Removing R.V. coil
(1) Remove the cabinet and panels. (Refer to 1.)
(2) Remove the R.V. coil. (See Photo 5.)
4. Removing the discharge temperature thermistor and
defrost thermistor
(1) Remove the cabinet and panels. (Refer to 1.)
(2) Pull out the discharge temperature thermistor from its
holder. (See Photo 6.)
(3) Pull out the defrost thermistor from its holder. (See Photo 5.)
Photo 3
Photo 4 (Inverter assembly)
Photo 5
Defrost
thermistor
43
PHOTOS
Screws of the
relay panel
Screw of
the earth
wires
Inverter
Heat sink
P.C. board
R.V. coil

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