Mitsubishi Electric MSZ-HM09NA-U1 Service Manual page 36

OPERATING PROCEDURE
3. Removing the indoor electronic control P.C.
board
(1) Remove the panel. (Refer to 1.) Remove the right corner
box.
(2) Disconnect the following connectors:
<Indoor electronic control P.C. board>
CN151 (Vane motor)
CN112 (Indoor coil thermistor)
CN10A (To the indoor power P.C. board)
(3) Unhook the catch on the left side of the control P.C.
board holder. Pull the control P.C. board holder as if
opening the door at 90 degrees. Remove the control P.C.
board holder from the axial rod on the electrical box.
(4) Remove the room temperature thermistor from the back
side of the control P.C. board holder.
(5) Unhook the catches of the control P.C. board holder, and
open the control P.C. board holder.
(6) Remove the indoor electronic control P.C. board from the
control P.C. board holder.
4. Removing the vane motor
(1) Remove the panel. (Refer to 1.) Remove the corner
box.
(2) Remove the control P.C. board holder, water cover and
the electrical box. (Refer to 2.)
(3) Pull out the drain hose from the nozzle assembly and
remove the nozzle assembly.
(4) Remove the screws of the vane motor and remove the
vane motor.
(5) Disconnect the connector from the vane motor.
OBH746B
PHOTOS
Photo 5
Control P.C. board holder (Inside)
Control P.C. board holder (Back side)
Room temperature thermistor
Photo 6
Screws of the vane motor
36
Catch
Indoor electronic
control P.C. board
Catch