Mitsubishi Electric Mr.Slim PCY-P18KA.TH, Service Manual

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OPERATING PROCEDURE
PHOTOS & ILLUSTRATIONS
33 32 33
PCY-P18KA.TH PCY-P24KA.TH PCY-P30KA.TH
PCY-P36KA.TH PCY-P42KA.TH PCY-P48KA.TH
DISASSEMBLY PROCEDURE
10
Be careful when removing heavy parts.
S1 S2 S3
1 2
1. Removing the air intake grilles (with air filters)
(1) Slide the air intake grille holding knobs (at 2 or 3 locations)
to the rear to open each air intake grille. (See Figure 1)
(2) While the air intake grilles left open, pull out each air
intake grille by pressing the stoppers in the rear hinges (at
2 or 3 locations). (See Figure 2)
2. Removing the electrical box
(1) Remove the air intake grilles. (See Figure 1,2)
(2) Remove the beam by removing 1 screw (4
×
8 PT) (See
Photo 1)
(3) Remove the electrical cover by removing 2 screws (4
×
10
ST) (See Photo 1).
(4) Pull down the electrical box by removing 2 screws (4
×
10
ST) (See Photo 2).
Note: There are 2 hooks on the back of the electri -
cal box. The electrical box that was pulled down can
be temporarily hooked onto the indoor unit by using 2
hooks.
(5) Disconnect the following connectors on the indoor con -
troller board:
fan motor: white (7P),
liquid pipe and condenser/evaporator temperature ther -
mistor: white (4P),
vane motor: white (20P),
drain pump: blue (3P) (optional),
drain float switch: white (4P) (optional).
<Electrical parts in the electrical box)
• Terminal blocks (for wired remote controller and indoor
and outdoor connection and power
supply)
• Indoor controller board
Figure 1
Photo 1
Photo 2
slide
Air intake grille
Air intake grille
holding knob
hinge
Pull out each air intake grille
while pressing the shaded portion.
Do not burst open or
forcibly open the air
intake grilles at a greater
than 120 degree angle.
Doing so will damage the
hinges.
Figure 2
Beam
Electrical box cover fixing screws (4 × 10 ST)
Electrical box cover
Figure 3
Electrical box fixing screws
Electrical box
Room temperature
thermistor (TH1)
Indoor controller
board (I.B.)
Terminal blocks
Beam fixing screw
(4 × 8 PT)
3. Removing the indoor controller board
(1) Remove the air intake grilles. (See Figure 1,2)
(2) Remove the beam. (See Photo 1)
(3) Remove the electric box cover. (See Photo 1)
(4) Pull down the electrical box by removing 2 screws (4
×
10
ST). (See Photo 2)
(5) Remove the connectors. (See Step 2.)
(6) Remove 6 supports from the indoor controller board.
(7) Remove the indoor controller board. (See Figure 3)
Photo: PCY-P36KA.TH
OCH550A