Mitsubishi Electric PUHZ-W50VHA-BS Service Manual page 89

PUHZ-HW112YHA(-BS)
PUHZ-HW140YHA(-BS)
PUHZ-HW140VHA(-BS)
PUHZ-HW140VHA2R2-BS
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, MF2)
(1) Remove the service panel. (See Photo 1)
(2) Remove the top panel. (See Photo 1)
(3) Remove 5 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 connectors, CNF1 and CNF2 on controller
circuit board in electrical parts box.
(6) Remove 4 fan motor fixing screws (5 × 25) 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 and power
supply wire from terminal block.
(4) Disconnect the connectors on the controller circuit board.
(5) Remove the terminal cover and disconnect the compres-
sor lead wire.
(6) Remove 2 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.
Photo 5 (PUHZ-HW140V)
Controller circuit board
Terminal block (TB1)
OCH439H
PUHZ-HW112YHA2(-BS)
PUHZ-HW140YHA2(-BS)
PUHZ-HW140VHA2(-BS)
PUHZ-HW140VHA2R3(-BS)
Hook (right)
Electrical parts box fixing screw
PUHZ-HW112YHA2R1(-BS)
PUHZ-HW140YHA2R1(-BS)
PUHZ-HW140VHA2R1(-BS)
PHOTOS & ILLUSTRATION
Photo 1
Top panel fixing screws
Grille
fixing
screws
Grille
fixing
screws
Photo 2
Propeller
Nut
Photo 4 (PUHZ-HW112/140Y)
Noise filter circuit
board (N.F.)
Terminal
block (TB1)
89
PUHZ-HW112YHA2R3(-BS)
PUHZ-HW140YHA2R3(-BS)
Top panel
Service panel
Slide
Fan grille
Service panel
fixing screws
Photo 3
Front panel
Fan motor fixing screws
Fan motor fixing screws
Controller circuit
board (C.B.) Electrical parts box
Terminal
block (TB2)
Fan
motor
Electrical
parts box
fixing
screw