Mitsubishi Electric SVZ-KP18NA Service Manual page 41

OPERATING PROCEDURE
2. Removing the inverter assembly, inverter P.C. board
(1) Remove the cabinet and panels. (Refer to procedure 1.)
(2) Disconnect the lead wire to the reactor and the following con-
nectors:
<Inverter P.C. board>
CN721 (R.V.coil)
CN931, CN932 (Fan motor)
CN641 (Defrost thermistor and discharge temperature ther-
mistor)
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 ground wire and screw of the
T.B.support. (See Photo 4)
(7) Remove the screw of the PB fixture.
(8) Remove the relay panel from the PB support.
(9) Remove the inverter P.C. board from the inverter assembly.
3. Removing R.V. coil
(1) Remove the cabinet and panels. (Refer to procedure 1.)
(2) Disconnect the following connectors:
<Inverter P.C. board>
CN721 (R.V. coil)
(3) Remove the R.V. coil. (See Photo 5)
TCH022
Photo 3
Screws of the relay panel
Photo 4 (Inverter assembly)
Hook of the
PB support
Heatsink
Relay panel
Hook of the
PB support
Photo5
41
PHOTOS
Screw of the
Inverter P.C.
T.B.support
board
PB support
Screw of the
PB fixture
R.V. coil
Welded parts of 4-way valve
Screws of
the reactor
T.B.support
Screw of the
ground wire