Disassembly Procedure - Mitsubishi Electric Mr.Slim PLH-P3AAH.UK Technical & Service Manual

11

DISASSEMBLY PROCEDURE

PLH-P3AAH.UK, PLH-P3AAH
OPERATING PROCEDURE
1. Removing the air intake grille
(1) Slide the knob of air intake grille toward the arrow 1 to
open the air intake grille.
(2) Remove drop prevention hook from the panel.
(3) Slide the shaft in the hinge to the direction of the arrow2
and remove the air intake grille.
2. Removing the fan guard
(1) Open the air intake grille.
(2) Remove the 3 screws of fan guard.
3. Removing the room temperature thermistor
(1)Remove the fan guard.(See photo 1)
(2) Remove the screw in the room temperature thermistor
holder to remove the holder and the room temperature
thermistor.
(3) Remove the 1 screw from the bell mouth, and unscrew the
other 2 screws (fix to the oval hole which has a different
diameter) to remove the bell mouth.
(4) Hold the holder claw, and remove the room temperature
thermistor and holder.
(5) Disconnect the connector (red) from the indoor control
board.
4. Removing the electrical box
(1) Remove the fan guard.(See photo 1)
(2) Disconnect the lead wire of the vane motor from the clamp,
and disconnect the white connector (8P).
(3) Remove the room temperature thermistor with the holder.
(4) Remove the bell mouth.(See photo 2)
(5) Disconnect the relay connector in the electrical box.
Red (3P) for ran motor power supply
White (2P) for pipe temperature detecting thermistor
Blue (2P) for drain pump
White (3P) for drain sensor
Green (6P) for auxiliary heater
(6) Remove the 3 screws of the electrical box and loosen the
other 2 screws to remove the box.
<Electrical parts in the electrical box>
Indoor controller board
Power supply board
Terminal block
Capacitor
Heater contactor
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Be careful on removing heavy parts.
PHOTOS & ILLUSTRATIONS
Figure 1
Air intake grille
Grille
Air intake grille knob
Photo 1
Fan guard
Photo 2
Bell mouth
Photo 3
Nut
Turbo fan
Electrical
box
Power
supply
board
Connector Indoor controller board
Screws
Air intake grille
Screws
Room
temperature
thermistor
Air intake grille
Capacitor
Heater
contactor
Terminal
block
Connector