Mitsubishi Electric PLFY-P20VCM-E Technical & Service Manual page 17

OPERATING PROCEDURE
9. Removing the drain pump (DP) and drain sensor (DS)
(1) Remove the panel. (Refer to 3 )
(2) Remove the drain pan. (Refer to 6)
(3) Remove the 2 screws fixed to the control box cover, and
remove the control box cover.
(4) Remove the connectors of the (CNP) and the (CN31)
from the indoor controller board.
(5) Remove the 1 screw fixed to the cover, and remove the
cover.
(6) Disconnect the lead wires to the direction of the drain
pump.(See photo 7)
(7) Remove the 3 screws of the drain pump.
(8) Cut the drain hose band, pull out the drain hose from the
drain pump.
(9) Pull out the drain pump.
(10) Remove the drain sensor and the holder.
10. Removing the heat exchanger
(1) Remove the panel. (Refer to 3 )
(2) Remove the drain pan. (Refer to 6)
(3) Remove the nut and the washer from the turbo fan, and
remove the turbo fan.
(4) Remove the 2 screws fixed to the control box cover, and
remove the control box cover.
(5) Disconnect the connectors of the (fan 1) and the (fan 2)
from the indoor controller board.
(6) Remove the 3 screws fixed to the piping cover, and
remove the piping cover. (See photo 9)
(7) Remove the pipe temperature thermistor/liquid and
condenser/evaporator temperature thermistor. (Refer to 7)
(8) Disconnect the lead wires to the direction of the fan motor.
(9) Remove the 1 coil support screw, the 2 inside coil screws
(See photo 10), and the 4 outside coil screws (See photo 9)
from the heat exchanger, and remove the heat exchanger.
PHOTOS&ILLUSTRATIONS
Photo 7
Control
box
Photo 8
Drain
hose
Screw
Photo 9
Screws of
piping cover
Piping cover
Photo 10
Coil
support
17
Cover
Screw
Drain sensor (DS) Drain pump (DP)
Fixing band
Control box
Lead wires
Coil
support Screw
Heat exchanger
Lead wires
Screws
Control box
Coil
screws
Coil screws