Disassembly Procedure - Mitsubishi Electric Mr.SLIM PUZ-HA24NHA Service Manual

14

DISASSEMBLY PROCEDURE

PUZ-HA24NHA
OPERATING PROCEDURE
1. Removing the service panel and top panel
(1) Remove 3 service panel fixing screws (5 × 12) and slide
the hook on the right downward to remove the service
panel.
(2) Remove screws (3 for front, 3 for rear/5 × 12) of the top
panel and remove it.
2. Removing the fan motor (MF1)
(1) Remove the service panel. (See Photo 1)
(2) Remove the top panel. (See Photo 1)
(3) Remove 4 fan grille fixing screws (5 × 12) to detach the
fan grille. (See Photo 1)
(4) Remove a nut (for right handed screw of M6) to detach
the propeller. (See Photo 2)
(5) Disconnect the connector CNF1 on controller circuit
board in electrical parts box.
(6) Remove 4 fan motor fixing screws (5 × 20) to detach
the fan motor. (See Photo 3)
3. Removing the electrical parts box
(1) Remove the service panel. (See Photo 1)
(2) Remove the top panel. (See Photo 1)
(3) Disconnect the indoor/outdoor connecting wire from terminal block.
(4) Disconnect the connector CNF1, LEV-A and LEV-B on
the controller circuit board.
<Symbols on the board>
• CNF1 : Fan motor
• LEV-A, LEV-B : LEV
(5) Disconnect the pipe-side connections of the following parts.
• Thermistor <Liquid> (TH3)
• Thermistor <Discharge> (TH4)
• Thermistor <2-phase pipe, Ambient> (TH7/6)
• High pressure switch (63H)
• 4-way valve coil (21S4)
• Thermistor <Comp. surface> (TH33)
(6) Remove the terminal cover and disconnect the compressor lead wire.
(7) Remove an electrical parts box fixing screw (4 × 10)
and detach the electrical parts box by pulling it upward.
The electrical parts box is fixed with 2 hooks on the left
and 1 hook on the right.
OCH721A
: Indicates the visible parts in the photos/figures.
PHOTOS/FIGURES
Photo 1
Top panel fixing screws
Fan grille
Grille fixing
screws
Photo 2
Front panel
Propeller
Nut
Front panel fixing screws
Photo 4
Electrical parts box
Terminal block
(TB1)
87
Top panel
Slide
Side panel (R)
Service panel
Cover panel
(Rear)
Cover panel Service panel
(Front)
fixing screws
Photo 3
Fan motor fixing screws
Fan motor
fixing screws
Electrical parts
box fixing screws
Controller circuit
board (C.B.)
Fan
motor
(MF1)