70
OPERATING PROCEDURE
PUHZ-SW100VHA.UK PUHZ-SW100VHA-BS.UK
PUHZ-SW120VHA.UK PUHZ-SW120VHA-BS.UK
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 2-1)
(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 2-2)
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 termi-
nal block.
(4) Disconnect the connector CNF1, CNF2, LEV-A and LEV-B
on the controller circuit board.
<Symbols on the board>
• CNF1, CNF2 : Fan motor
• LEV-A, LEV-B : LEV
<Diagram symbol in the connector housing>
• Thermistor <Liquid> (TH3)
• Thermistor <Discharge> (TH4)
• Thermistor <2-phase pipe, Ambient> (TH6/7)
• High pressure switch (63H)
• High pressure sensor (63HS)
• Low pressure switch (63L)
• 4-way valve coil (21S4)
• Thermistor <Comp. surface> (TH34)
(5) Remove the terminal cover and disconnect the compres-
sor lead wire.
(6) 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.
Fan motor fixing screws
Photo 2-1
Fan
motor
Fan motor fixing screws
Propeller
Front panel
Nut
Photo 2-2
Photo 3
Electrical
parts box
Controller circuit board
(C.B.)
Electrical parts
box fixing screw
Terminal cover
Cover panel
(Front)
Cover panel fixing screws
Compressor (MC)
Terminal block
(TB1)
Valve bed
Screw
Photo 1
Top panel fixing screws
Top panel
Service panel
fixing screws
Service panel
Grille
fixing
screws
Fan grille
Grille
fixing
screws
Slide
Service panel
fixing screws
PHOTOS & ILLUSTRATION
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