Mitsubishi Electric MUZ-HA VF Series Service Manual page 50

OPERATING PROCEDURE
2. Removing the Wi-Fi interface
(1) Remove the panel (Refer to section 1.) and the corner
box right.
(2) Remove the screw of the V.A. clamp.
Remove the V.A. clamp and the indoor/outdoor con-
necting wire.
(3) Remove the screw of the electrical cover, and remove
the electrical cover.
(4) Disconnect the following connector (Photo 3-2):
<Indoor electronic control P.C. board>
CN110 (Wi-Fi interface)
(5) Remove the lead wire of the Wi-Fi interface from the
hook of the cable guide and water cover.
3. Removing the indoor electrical box
(1) Remove the panel (Refer to section 1.) and the corner
box right.
(2) Remove the screw of the V.A. clamp.
Remove the V.A. clamp and the indoor/outdoor
connecting wire.
(3) Remove the earth wire connected to the indoor heat
exchanger from the electrical box.
(4) Remove the screw of the electrical cover and remove
the electrical cover.
(5) Remove the Wi-Fi interface (Refer to section 2. (4) to
(5)).
(6) Disconnect following connectors:
<Indoor electronic control P.C. board>
CN151 (Vane motor)
CN211 (Indoor fan motor)
CN112 (Indoor coil thermistor)
(7) Remove the wires of the indoor coil thermistors from the
water cover, and remove the tab of the earth wire.
(8) Remove the water cover.
(9) Unhook the upper and lower catch of the electrical box,
and pull out the electrical box.
NOTE:
To attach the electrical box, pass the wires connecting the
indoor power monitor receiver SW P.C. board and the
indoor electronic control P.C. board through A. Pass the
lead wires of the fan motor through B as shown in the
Photo 3-1.
Photo 3-2
OBH822H
Photo 2
Photo 3-1
Screw of
the terminal block
Wi-Fi interface
Earth wire
connected to the
electrical box
Vane motor
connector (CN151)
Indoor fan motor
connector (CN211)
Indoor coil thermistor
connector (CN112)
Wi-Fi interface
connector (CN110)
Room temperature
thermistor
connector
(CN111)
Insulations*1
50
PHOTOS/FIGURES
Earth wire connected
to the indoor heat
exchanger
Wi-Fi interface
Catch of indoor electronic
control P.C. board holder
Electrical box
Electrical box
Screw of
the electrical cover
Screw of
the V.A. clamp
Display P.C. board
holder
Upper catch of
the electrical box
Indoor
electronic
control P.C.
board
A B
Lower catch of
the electrical box