Mitsubishi Electric MSZ-AY25VG-ET1 Service Manual page 48

OPERATING PROCEDURE
3. Removing the indoor electrical box and the air
purifying device (Photos 3, 4, 5, 6)
(1) Remove the front panel and the horizontal vanes (U)
(L).
(2) Remove the panel (R) and the Wi-Fi interface from the
panel (F).
(3) Remove the panels (L) (U) (F).
(4) Remove the lead wires of indoor coil thermistor and
the air purifying device from the water cover.
(4) Remove the earth wire connected to the indoor heat
exchanger from the electrical box.
(5) Disconnect the following connector (Photo 5):
<Indoor electronic control P.C. board>
CN110 (Wi-Fi interface)
CN151 (Vane motors)
CN211 (Indoor fan motor)
CN112 (Indoor coil thermistors)
CN1T1, CN2T1 (Air purifying device) (MSZ-AY·VGKP)
(6) Remove the electrical box.
(7) Remove the screw of the air purifying device and the
air purifying devece (Photo 6). (MSZ-AY·VGKP)
4. Removing the indoor terminal P.C. board, the
switch board, the display board, the receiver
board and the indoor electronic control P.C.
board
(1) Remove the indoor electrical box (Refer to section 3).
(2) Remove the screw of the terminal block (Photo 5).
(3) Remove the earth wire connected to the electrical box
from the indoor electronic control P.C. board.
(4) Remove the indoor terminal P.C. board.
(5) Pull the display and receiver P.C. board holder as if
opening the door at 90 degrees. Remove the display
and receiver P.C. board holder from the axial rod on
the electrical box.
(6) Open the rear cover of the display and receiver P.C.
board holder.
(7) Remove the switch/ buzzer P.C. board, the display
P.C. board and the receiver P.C. board.
(8) Remove the indoor electronic control P.C. board.
OBH932
PHOTOS/FIGURES
Photo 4
Lead wire of the indoor coil thermistor
and air purifying device (MSZ-AY·VGKP)
Photo 5
CN110 CN1T1
CN112
CN2T1
Terminal
P.C. board
CN151
Screw of the
terminal block
Earth wire
connected to the
electrical box
Photo 6 (MSZ-AY·VGKP)
Air purifying device
48
Earth wire
connected to the
indoor heat exchanger
Screw of
the earth wire
Water cover
Display and receiver
P.C. board holder
Indoor electronic
control P.C. board
CN211
Screw of the air
purifying device