Mitsubishi Electric MSZ-HR25VF-E1 Service Manual page 30

OPERATING PROCEDURE
2. Removing the indoor terminal P.C. board, indoor
electronic control P.C. board, and power monitor
receiver SW P.C. board and the electrical box
<Removing the electrical box>
(1) Remove the panel. (Refer to section 1.)
Remove the right corner box.
(2) Remove the screw of the V.A. clamp.
Remove the V.A. clamp and the indoor/outdoor connect-
ing wire.
(3) Remove the screws of the electrical cover and electrical
cover.
(4) Remove the connector of the coil thermistor from the
indoor electronic control P.C. board.
Remove the wires of the indoor coil thermistors and tab
of the earth wire from the water cover.
(5) Remove the water cover.
(6) Remove the following connectors from the indoor elec-
tronic control P.C. board:
CN151 (Vane motor)
CN211 (Fan motor)
(7) Remove the upper catch of the electrical box, and pull
out the electrical box.
NOTE:
To attach the electrical box, pass the wires connecting
the indoor power monitor receiver SW P.C. board and the
indoor electronic control P.C. board through A. Pass the
lead wires of the fan motor through B as shown in the
Photo 3.
<Removing the indoor terminal P.C. board, indoor elec-
tronic control P.C. board, and power monitor receiver
SW P.C. board>
(8) Remove the screw of the terminal block and remove
the earth wire connected to the electrical box from the
indoor electronic control P.C. board.
(9) Remove the power monitor receiver SW P.C. board
holder from the electrical box.
(10) Unhook the hooks of the power monitor receiver switch
P.C. board holder (Photo 4) and remove the power
monitor receiver SW P.C. board.
(11) Remove the room temperature thermistor from the elec-
trical box .
Remove the indoor terminal P.C. board and the indoor
electronic control P.C board from the electrical box.
*1: Remove the insulations when replace the indoor elec-
tric control P.C. board.
Photo 4
OBH822
Photo 2
Water cover
Photo 3
Screw of the
terminal block
2 hooks
A
30
PHOTOS/FIGURES
Earth plate
Power monitor receiver
SW P.C. board holder
Earth wire connected
to the electrical box
Coil thermistor
Screw of the
electrical cover
Screw of the
V.A. clamp
Electrical box
Indoor electronic
control P.C. board
Indoor fan motor
connector CN211
Coil thermistor
Vane motor
connector CN151
Room tempera-
ture thermistor
connector CN111
Insulations*1
B