Mitsubishi Electric PKFY-WL04NLMU-E.TH Technical & Service Manual page 29

OPERATION PROCEDURE
6. REMOVING THE INDOOR FAN MOTOR AND THE
LINE FLOW FAN
(1) Remove the panel and the corner box. (Refer to procedure 1)
(2) Remove the electrical box (Refer to procedure 2) and the
nozzle assembly (Refer to procedure 4).
(3) Remove the water cover. (See Photo 2)
(4) Loosen the screw fixing the line flow fan. (See Photo 9)
(5) Remove 3 screws fixing the motor bed. (See Photo 8)
(6) Remove the motor bed together with fan motor and motor
band.
(7) Release the 2 hooks of the motor band. Remove the motor
band. Pull out the indoor fan motor.
(8) Remove 2 screws fixing the left side of the heat exchanger.
(See Photo 10)
(9) Lift the heat exchanger, and pull out the line flow fan to the
lower-left.
Note: When attaching the line flow fan, screw the line flow fan
so 4mm gap is provided between the right end of the line
flow fan and the right wall of the air passage of the box.
(See Photo 9)
Photo 10
Screws of the left side
of the heat exchanger
7. REMOVING PIPE THERMISTOR AND AIR PURGE
VALVE
(1) Remove the panel and the corner box. (Refer to proce-
dure 1)
(2) Remove the electrical box covers. (Refer to procedure 2)
(3) Remove the water cover. (See Photo 2)
(4) Remove the inlet pipe thermistor and outlet pipe thermistor.
(5) Disconnect the connector (CN44) on the indoor controller
board. (TH22 and TH23/CN44)
(6) Remove the air purge valve
TCH122
PHOTOS/FIGURES
Photo 8
Lead wire of pipe thermistor
Photo 9
Photo 11
Outlet pipe
thermistor
(TH23)
Inlet pipe thermistor (TH22)
29
Motor band
Screws of the
motor bed
Motor bed
Screw of the line flow fan
4 mm
Air purge valve
Connect for ground