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PUHZ-SW75VHAR4.UK
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.
Note: When removing service panel and top panel at the
same time, count one less screw since they share a
screw.
2. Removing the fan motor (MF1)
(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 2-1)
(5) Disconnect the connector CNF1 on controller circuit board
in electrical parts box.
(6) Loosen 3 clamps on the separator and motor support, then
unbind the lead wires.
(7) Remove 4 fan motor fixing screws (5 × 20) to detach the
fan motor. (See Photo 2-2)
Note: When attaching the fan motor, make sure to route the
cable through the hook below the fan motor and fix
firmly with the clamp. (R4 model only)
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 the
power supply wire from the 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 <Ambient, 2-phase pipe> (TH7/6)
• High pressure sensor (63HS)
• High pressure switch (63H)
• 4-way valve coil (21S4)
• Thermistor <Comp. surface> (TH34)
(6) Remove the terminal cover and disconnect the compressor
lead wire.
(7) Loosen 2 clamps on the separator and unbind the lead
wires.
(8) 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.
OCH533D
PUHZ-SW75VHAR4-BS.UK
87
PHOTOS
Photo 1
Top panel fixing screws
Fan grille
Grille fixing screws
Photo 2-1
Front panel
Propeller
Nut
Front panel fixing screws
Photo 3
Electrical parts box
Terminal block
Controller circuit
board (C.B.)
(TB1)
Top panel
Slide
Service panel
Service panel
fixing screws
Photo 2-2
Fan
Fan motor fixing screws
motor
(MF1)
Fan motor
fixing screw
Electrical parts box
fixing screws
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