Mitsubishi Electric MUFZ-KW25VG-E1 Service Manual page 57

OPERATING PROCEDURE
2. Removing the inverter assembly and inverter P.C.
board
(1) Remove the cabinet and the service panel. (Refer to section
1.)
(2) Disconnect the lead wire to the reactor and the following
connectors:
<Inverter P.C. board>
CN601 (Base heater)
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 (Expansion valve coil)
(3) Remove the compressor connector.
(4) Remove the earth wires and the lead wires of the inverter P.C.
board.
(5) Remove the screws of the P.B. support.
(6) Remove the P.B. support from the relay panel.
(7) Remove the screws of the inverter P.C. board.
(8) Remove the inverter P.C. board from P.B. support.
Notes about attaching the inverter P.C. board
*
1. When attaching the inverter P.C. board, clip the lead wires of
the reactor to the wire saddles on the bottom of relay panel.
2. After attaching the inverter P.C. board, make sure that the
lead wires are connected and placed as shown in Photo 3.
OBH895
PHOTOS/FIGURES
Photo 3
Inverter P.C board
Screws of
the P.B.
support
Screw of
the relay
panel
Earth wires
Photo 4
57
Screws of the relay panel
Screw of the P.B. support
Screws of
the inverter
P.C. board