Disassembly Procedure - Mitsubishi Electric CITY MULTI Series Technical & Service Manual

10

DISASSEMBLY PROCEDURE

PLFY-P08NEMU-E
PLFY-P24NEMU-E
OPERATING PROCEDURE
1. Removing the intake grille and the filter
(1) Slide the levers in the direction indicated by the arrows
1 to open the intake grille. (See Figure 1.)
(2) Unlatch the hook that secures the grille, and pull out the
filter to remove.
(3) With the intake grille in the "open" position, remove
the hinge of the intake grille from the grille as
indicated by the arrows 2. (See Figure 2.)
2. Removing the electrical box cover
(1) Remove the intake grille and the filter. (See Procedure 1.)
(2) Loosen the 2 electrical box cover fixing screws (M4 ×8 )
approximately 2 to 3 mm. (See Photo 1.)
(3) Slide the electrical box cover towards the arrow to
remove. (See Photo 2.)
3. Removing the room temperature detection thermistor
(TH21)
(1) Remove the intake grille and the filter. (See Procedure 1.)
(2) Remove the electrical box cover. (See Procedure 2.)
(3) Disconnect the connector CN20 (RD) from the indoor
controller board.
(4) Remove the room temperature detection thermistor with
its holder. (See Photo 4.)
4. Removing the indoor controller board (I.B)
(1) Remove the intake grille and the filter. (See Procedure 1.)
(2) Remove the electrical box cover. (See Procedure 2.)
(3) Disconnect the connectors:
CNMF (WH) for fan motor
CNV (WH) for vane motor
CN5Y (WH) for i-see Sensor motor
CN4Z (WH) for i-see Sensor (sensor)
CN90 (WH) for wireless remote controller board
CNP (WH) for drain pump
CN4F (WH) for float switch
CN44 (WH) for pipe temperature detection
thermistor/liquid
CND (BK) for indoor controller board power supply
Disconnect the connectors for optional parts, if any.
(4) Disconnect the lead wire connected to the TB5 on the indoor controller board.
TB5: M-NET transmission connecting wire
(5) For the unit controlled with the wireless remote controller,
disconnect the lead wire connected to the TB15 on the
indoor controller board.
TB15: MA remote controller connecting wire
(6) Remove the indoor controller board by removing it from 3
holders and 4 hooks. (See Photo 5.)
OCH611D
PLFY-P12NEMU-E
PLFY-P30NEMU-E
37
PLFY-P15NEMU-E
PLFY-P36NEMU-E
Be careful when removing heavy parts.
PHOTOS/FIGURES
Figure 1
Intake grille
Grille
Hooks
Hole for the
grille's hook
Photo 1
Electrical box cover
fixing screws
Electrical box cover
Photo 3
Indoor controller
board
Electrical box
Electrical box fixing
screws (M5 × 10)
Photo 4
Room temperature
detection thermistor
Photo 5
Holders
PLFY-P18NEMU-E
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Figure 2
Intake grille
Filter
2
2
Grille hook
Photo 2
Slide
Electrical box
cover
Room temperature
detection thermistor
CN20
Electrical box
fixing screws
(M5 × 10)
Thermistor holder
Hooks