Mitsubishi Electric MSZ-SF15VA-E1 Service Manual page 31

OPERATING PROCEDURE
2. Removing the indoor electronic control P.C.
board, receiver P.C. board, display P.C. board,
and SW P.C. board
(1) Remove the panel (refer to 1.) and the corner box.
(2) Remove the screw of the V.A. clamp. Remove the V.A.
clamp and the indoor/outdoor connecting wire. (Photo 2)
(3) Remove the screw of the electrical cover, and then
the electrical cover. (Photo 2)
(4) Remove the display holder and SW holder. (Photo 3)
(5) Open the rear cover of the display holder and pull out
the receiver P.C. board. (Photo 5)
(6) Open the front cover of the display holder and pull out
the display P.C. board. (Photo 5)
(7) Open the SW holder and pull out the SW P.C. board.
(8) Disconnect the following connectors on the electronic
control P.C. board:
CN211 (Indoor fan motor)
CN201 (Terminal block)
CN112 (Indoor coil thermistor)
CN151 (Horizontal vane motor)
CN109 (Receiver P.C. board)
(9) Pull out the electronic control P.C. board from the
electrical box.
(10) Remove the earth wire connected to the indoor elec-
tronic control P.C. board from the electrical box. (Photo
3)
NOTE:
MSZ-SF15VA -
do not have locking mechanism.
MSZ-SF15VA -
, ,
-
E3 E4 ER3
OBH555D
, and MSZ-SF20VA -
E1 E2
, , , and MSZ-SF20VA
E3 E4 ER3 ER4
, have locking mechanism.
ER4
Photo 2
Photo 3
Earth wire to the
heat exchanger
,
E1 E2
SW holder
Photo 4
Room temperature thermistor (RT11)
Be sure to install this thermistor in the
proper direction.
31
PHOTOS
Screw of the
V.A. clamp
Screw of the
electrical
cover
Drain hose
Release this catch to remove the
electronic control P.C. board.
Indoor electronic
control P.C. board
Earth wire to the
indoor electronic
control P.C. board
Fixing screw of
the electrical
cover
Display holder