Mitsubishi Electric PUHZ-ZRP35VKA Service Manual page 136

PUHZ-ZRP100VKA
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 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 connectors, CNF1, CNF2 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, CNF2, LEV-A and LEV-B
on the controller circuit board.
<Symbols on the board>
• Fan motor (CNF1, CNF2)
• LEV (LEV-A and LEV-B) (LEV-C (140 only))
(5) Disconnect the pipe-side connections of the following parts.
• Thermistor <Outdoor pipe> (TH3) (TH33)
• Thermistor <Discharge> (TH4)
• Thermistor <Outdoor 2-phase pipe, Outdoor> (TH7/6)
• High pressure switch (63H)
• 4-way valve coil (21S4)
• Thermistor <Comp. surface> (TH32)
(6) Remove the terminal cover and disconnect the
compressor lead wire.
(7) Remove 2 electrical parts box fixing screws (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.
OCH527B
PUHZ-ZRP125VKA PUHZ-ZRP140VKA
Photo 1
Top panel fixing screws
Grille
fixing
screws
Grille
fixing
screws
Photo 2
Front panel
Propeller
Nut
Photo 4
136
PHOTOS
Top panel
Service panel
Slide
Service panel
fixing screws
Cover panel
fixing screws
Photo 3
Fan motor
fixing screws
Fan motor
Fan motor
fixing screws
Electrical parts box
Electrical parts
box fixing screw