Mitsubishi Electric MUZ-HA VF Series Service Manual page 60

OPERATING PROCEDURE
3. Removing the indoor power P.C. board and the
electrical box
(1) Remove the panel (refer to section 1). Remove the
corner box right .
(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 screw of the V.A. clamp.
(5) Remove the V.A. clamp and the indoor/outdoor con-
necting wire.
(6) Remove the screw of the electrical cover and remove
the electrical cover.
(7) Remove the Wi-Fi interface (Refer to section 2.(4) to
(5)).
(8) Remove the screws of the earth plate. (Photo 4)
(9) Remove the indoor coil thermistor from the water
cover.
(10) Disengage the hooks of the water cover and remove
the water cover.
(11) Remove the screw of the electrical cover and remove
the electrical cover.
(12) Disconnect the CN211 (Indoor fan motor) from the
indoor power P.C. board.
(13) 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 P.C. board and the indoor electronic
control P.C. board through B. Pass the lead wires of
the fan motor through C as shown in the Photo 3-1.
(14) Disconnect the following connectors.
<Indoor power P.C. board>
CN201 (Terminal block)
CN20A (To the indoor electronic control P.C. board)
OBH822H
PHOTOS/FIGURES
Photo 4
Screws of the earth plate
60
Water cover
Screw of the
electrical cover
Screw of the
V.A. clamp
Indoor coil
thermistor