Removing The Electrical Box; Removing The Line Flow Fan And The Fan Motor - Mitsubishi Electric CITY MULTI Series Technical & Service Manual

OPERATION PROCEDURE

6. Removing the electrical box

(1) Remove the front panel. (Refer to procedure 2)
(2) Remove the electrical box cover. (See Photo 2)
(3) Remove the water cut. (See Photo 3)
(4) Pull the nozzle assembly toward you as opening the catch
of the nozzle assembly. (See Photo 4)
(5) Disconnect the indoor/outdoor transmission wiring of TB5.
(6) Disconnect the power supply wiring of TB2.
(7) Disconnect the relay connector of MA-remote controller.
(8) Disconnect the following connector on the indoor controller
board.
CN60, CN5V, CN29, CN21, CN90, (CN3A)
(9) Disconnect the connector (FAN) on the indoor power board.
(10) Remove the ground wire fixing screw.
(11) Pull the disconnected lead wire out from the electrical box.
(12) Push up the upper fixture catch to remove the box, then
pull the lower fixture and remove it from the box fixture.

7. Removing the line flow fan and the fan motor

(1) Remove the front panel. (Refer to procedure 2)
(2) Remove the nozzle assembly. (Refer to procedure 4)
(3) Remove the electrical parts box. (Refer to procedure 6)
(4) Remove the fixture while pressing the right side of motor
fixture catch. (See Photo 7)
(5) Remove the left side of the motor fixture.
(6) Loosen the set screw which fixes the line flow fan to the
fan motor, then remove the fan motor by sliding it to the
right side. (See Photo 7)
(7) Pull the left-hand side of the heat exchanger toward you.
(See Photo 9)
(8) Remove the line flow fan.
Photo 8
Line flow fan
OCH516B
Pipe tempera-
ture detection
thermistor/liquid
(TH22)
Pipe temperature detec-
tion thermistor/gas
(TH23)
Set screw
31
PHOTOS
Photo 6
Screw for Linear
ground wire expansion valve
Terminal block (TB2)
Photo 7
Heat exchanger
Set screw
Photo 9
Heat exchanger
fixture (left)
Indoor controller board
Fixture for
electrical box (top)
Indoor power
board
Electrical box
Fixture for
electrical box
(bottom)
Terminal block (TB5)
Fan motor
Fixture (right)
Fixture (left)
Screws for fixture (left)
Heat exchanger