OPERATING PROCEDURE
PHOTOS
2. Removing the indoor electrical box
(1) Remove the panels (Refer to 1.) and the right corner
box.
(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) Disconnect following connectors:
<Indoor electronic control P.C. board>
CN151 (Vane motor)
CN1T1 (Air purifying device)
CN1R1 [Interlock switch (Air purifying device)]
<Indoor power P.C. board>
CN211 (Indoor fan motor)
(6) Remove the screw fixing the electrical box, then
the upper catch of the electrical box, and
pull out the electrical box.
When installing the electrical box, pass the lead wire
from the fan motor through (Photo 9) and (Photo 4)
so that it will not be pinched under the electrical box.
Photo 3
Photo 4
Photo 5
Photo 6
3. Removing the indoor power P.C. board, the
switch board, the display board, the receiver
board and the indoor electronic control P.C.
board
(1) Remove the panels (Refer to 1.) and the right corner
box.
(2) Remove the screw of the V.A. clamp. Remove the V.A.
clamp and the indoor/outdoor connecting wire.
(3) Remove the indoor electrical box (Refer to 2.).
(4) Remove the earth wire connected to the electrical box
from the indoor power P.C. board.
(5) Disconnect the following connectors:
<Indoor electronic power P.C. board>
CN201 (Terminal block)
CN202 (To the indoor electronic control P.C. board)
(6) Remove the lead wire holder.
(7) Remove the indoor power P.C. board.
(8) Disconnect the following connectors:
<Indoor electronic control P.C. board>
CN106 (Switch P.C. board)
CN110 (DISPLAY AND i-see SENSOR ASSEMBLY)
CN111 (Room temperature thermistor)
CN112 (Indoor coil thermistor)
(9) Unhook the catches of the DISPLAY AND i-see
SENSOR ASSEMBLY from the electrical box (right
side).
(10) Unhook the catch of the rear cover of the DISPLAY
AND i-see SENSOR ASSEMBLY, and open the rear
cover.
Remove the display P.C. board and the receiver P.C.
board.
(11) Open the switch panel and remove the switch P.C.
board.
39
Indoor power
P.C. board
Upper catch
Screw of
the V.A. clamp
DISPLAY AND i-see
SENSOR ASSEMBLY
Screw of
the electrical cover
Electrical box
Earth wire
Screw of
the terminal block
Earth wire
Indoor electronic
control P.C. board
Screw of
the electrical box
Catch of the DISPLAY AND
i-see SENSOR ASSEMBLY
Lead wire holder
Catch of the DISPLAY AND
i-see SENSOR ASSEMBLY
Display P.C. board
Receiver P.C. board
OBH623D
