Mitsubishi Electric MSZ-FH12NA Service Manual page 36

OPERATING PROCEDURE
7. Removing the indoor fan motor, the indoor coil
thermistor and the line flow fan
(1) Remove the panels (Refer to 1.) and the right corner
box.
(2) Remove the indoor electronic control P.C. board
holder, the electrical box and the nozzle assembly.
(3) Remove the screws fixing the motor bed.
(4) Release the hooks of the water cut and remove the
water cut.
(5) Loosen the screw fixing the line flow fan.
(6) Remove the motor bed together with the indoor fan
motor and the motor band.
(7) Release the hooks of the motor band and remove the
motor band. Pull out the indoor fan motor.
(8) Remove the indoor coil thermistor from the heat
exchanger.
Install the indoor coil thermistor in its former position
when assembling it (Photo 10.).
(9) Remove the screws fixing the left side and the upper
right side of the heat exchanger.
(10) Lift the heat exchanger, and pull out the line flow fan
to the lower left.
When attaching the line flow fan, screw the line flow
fan so 4 mm gap is provided between the right end of
the line flow fan and the right wall of the air passage
of the box (Figure 1).
Figure 1
4 mm
Photo 13
Screws of
the left side of
the heat
exchanger
OBH683D
PHOTOS
Photo 10
Lead wire of the indoor
coil thermistor
Photo 11
Photo 12
Screw of the line flow fan
36
Water cut
Screws of
the motor bed
Screw of the upper right
side of the heat exchanger