Mitsubishi Electric MUZ-FD25VA-E1 Service Manual page 40

OPERATING PROCEDURE
2. Removing the inverter assembly, inverter P.C. board
(1) Remove the cabinet and panels. (Refer to 1.)
(2) Disconnect the lead wire to the reactor and the following
connectors;
<Inverter P.C. board>
CN721 (R.V.coil)
CN722 (Defrost heater)
CN932 (Fan motor)
CN641 (Defrost thermistor and discharge temperature
thermistor)
CN643 (Ambient temperature thermistor)
CN644 (Outdoor heat exchanger temperature thermistor)
CN724 (LEV)
(3) Remove 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 screw of the earth wire and screw of the
T.B.support. (See Photo 4.)
(7) 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,
defrost thermistor and outdoor heat exchanger tem-
perature thermistor.
(1) Remove the cabinet and panels. (Refer to 1.)
(2) Pull out the discharge temperature thermistor from its
holder. (See Photo 5.)
(3) Pull out the defrost thermistor from its holder. (See Photo
6.)
(4) Pull out the outdoor heat exchanger temperature thermistor
from its holder. (See Photo 6.)
Photo 3
Photo 4 (inverter assembly)
Inverter
Heat sink
P.C. board
Photo 5
Discharge temperature thermistor
40
PHOTOS
Screws of the
relay panel
Screw of the
T.Bsupport
T.Bsupport
Screw of the
earth wire
R.V. coil