Mitsubishi Electric MUZ-FH25VEHZ Service Manual page 52

OPERATING PROCEDURE
2. Removing the inverter assembly, inverter P.C. board
and relay P.C. board
(1) Remove the cabinet and panels. (Refer to 1.)
(2) Disconnect the lead wire to the reactor and the following con-
nectors:
<Inverter P.C. board>
CN602 (R.V. coil)
CN931, CN932 (Fan motor)
CN671 (Defrost thermistor, discharge temperature thermistor
and outdoor heat exchanger temperature thermistor)
CN672 (Ambient temperature thermistor)
CN724 (LEV)
CN601 (Defrost heater and heater protector)
(3) Remove the compressor connector.
(4) Remove the screws fixing the relay panel.
(5) Remove the relay panel.
(6) Remove the earth wires and the lead wires of the inverter P.C.
board.
(7) Remove the screws of the P.B. support.
(8) Remove the inverter P.C. board from the relay panel.
(9) Disconnect the following connectors:
<Relay P.C. board>
CN60 (Terminal block)
CN680 (Inverter P.C. board)
TAB65 (Inverter P.C. board)
TB71
(10) Remove the screws fixing the P.B. holder.
(11) Remove the relay P.C. board from the P.B. holder.
3. Removing R.V. coil
(1) Remove the cabinet and panels. (Refer to 1.)
(2) Disconnect the following connector:
<Inverter P.C. board>
CN602 (R.V. coil)
(3) Remove the R.V. coil.
OBH625A
Photo 3
Screw of the
P.B. support
Screws of
the P.B.
support
Screw of the
relay panel
Photo 4
Screw of the
R.V. coil
52
PHOTOS
Screws of the
relay panel
Earth wires
Screws of
Relay
the P.B.
P.C. board
support
Brazed parts of
4-way valve
Screw of
the P.B.
holder