Mitsubishi Electric CITY MULTY PKFY Series Technical & Service Manual page 30

OPERATION PROCEDURE
3. Removing the indoor controller board and indoor power
board
(1) Remove the front panel. (Refer to procedure 2)
(2) Remove the electrical box cover (screw 4 × 10).
(See Photo 2)
INDOOR CONTROLLER BOARD
(1) Disconnect the following connectors from the indoor con-
troller board.
CN60, CN5V, CN90, CN29, CN21
CN42, CN81, CN3A, CN20
(2) Pull out the indoor controller board toward you, then dis-
connect the rest of connectors.
CN53M, CN35M (See Photo 3)
INDOOR POWER BOARD
(1) Disconnect the following connectors on the indoor power
board.
FAN, CN53P, CN35P, CN2M, CND
(2) Remove the earth wire for TAB1.
(3) Pull out the indoor power board toward you.
(See Photo 3)
4. Removing the nozzle assembly and drain hose
(1) Remove the front panel. (Refer to procedure 2)
(2) Remove the electrical box cover. (See Photo 2)
(3) Disconnect the connector (CN5V) on the indoor controller
board.
(4) After unhook the right side of the corner box, press the
upper left side and remove the corner box.
(5) Remove the nozzle assembly from the fixture.
(See Photo 4)
(6) Remove the drain hose.
5. Removing the fan guard
(1) Remove the nozzle assembly and drain hose. (Refer to
procedure 4)
(2) Remove the screws of fan guard. (See Photo 5)
(3) Remove the fan guard.
OCH418E
PHOTOS
Photo 2
Indoor controller board
Photo 3
Water cut
fixing screw
Water cut
Photo 4
Heat exchanger
Nozzle assembly
Fixture for
nozzle assembly
Photo 5
30
Electrical box
cover
Screw for
electrical box
cover
Electrical box
Indoor power
board
Electrical box
Room temperature detection
thermistor (TH21)
Electrical box
Drain hose
Screws for
fan guard