40
OPERATING PROCEDURE
PHOTOS&ILLUSTRATIONS
3. REMOVING THE INDOOR MICRO CONTROLLER BOARD
AND INDOOR POWER BOARD
(1) Remove the front panel. (Refer to
2
)
(2) Remove the electrical box cover (screw 4 × 10).
(Refer to the Photo
2
)
INDOOR MICRO CONTROLLER BOARD
(1) Disconnect the following connectors on the indoor micro
controller board.
(connector in front of)
CN60, CN5V, CN34, CN29, CN21
CN42, CN81, CN3A, CN20
(2) Pull out the indoor micro controller board toward you, then
disconnect the rest of connectors.
CN53M, CN35M (See the Photo
3
)
INDOOR POWER BOARD
(1) Disconnect the following connectors on the indoor power
board.
FAN, CN53P, CN35P, CN2M, CND
(2) Remove the screws of the indoor power board, then pull
out the indoor power board toward you. (See the Photo
3
)
Photo 2
Electrical box cover
Screw cap
Electrical box
Photo 3
Indoor micro controller board
Indoor power
board
4. REMOVING THE ELECTRICAL BOX
(1) Remove the front panel. (Refer to
2
)
(2) Remove the electrical box cover.
(3) Pull the nozzle assembly toward you as opening the catch
of the nozzle assembly.
(4) Disconnect the indoor/outdoor connector.
(5) Disconnect the following connector on the indoor micro
controller board. (See the Photo
4
)
CN60, CN5V, CN34, CN29, CN21, CN20, CN3A
(6) Disconnect the following connector on the indoor power
board. (See the Photo
4
)
FAN, CN2M, CND
(7) Disconnect the ground wire.
(8) Pull the disconnected lead wire out from the electrical box.
(9) Push up the upper fixture catch to remove the box, then
pull the lower fixture and remove it from the box fixture.
Photo 4
Indoor micro
controller board
Fixture
(upper)
Indoor power
board
fixture (lower)
Ground wire set screw
Electrical box
Electrical box