95
OPERATING PROCEDURE
PHOTOS
Photo 3-1
Continued to the next page.
Electrical
parts box
Noise filter
circuit
board (N.F.)
Terminal
cover
Cover panel fixing screws
Compressor
(MC)
Valve bed
Screw
9
Terminal
block (TB2)
Screw
8
Front panel
Controller circuit
board (C.B.)
Terminal
block (TB1)
Cover panel
(Front)
PUHZ-SW100YHA.UK PUHZ-SW120YHA.UK
PUHZ-SW100YHA-BS.UK PUHZ-SW120YHA-BS.UK
PUHZ-SW100YHAR1.UK PUHZ-SW100YHAR3.UK PUHZ-SW100YHAR4.UK
PUHZ-SW100YHAR1-BS.UK PUHZ-SW100YHAR3-BS.UK PUHZ-SW100YHAR4-BS.UK
PUHZ-SW120YHAR1.UK PUHZ-SW120YHAR3.UK PUHZ-SW120YHAR4.UK
PUHZ-SW120YHAR1-BS.UK PUHZ-SW120YHAR3-BS.UK PUHZ-SW120YHAR4-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.
Note: When removing service panel and top panel at the
same time, count one less screw since they share a
screw.
Photo 2-1
Propeller
Front panel
Nut
Photo 2-2
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
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. (Top and bottom) (See Photo 1)
(4) Remove a nut (for right handed screw of M6) to detach
the propeller. (Top and bottom) (See Photo 2-1)
(5) Disconnect the connectors, CNF1, CNF2 on controller
circuit board in electrical parts box.
(6) Loosen 6 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. (Top and bottom) (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 power
supply wire from terminal 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
(5) Disconnect the pipe-side connections of the following parts.
<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)
(6) Remove the terminal cover and disconnect the compres-
sor lead wire.
(7) Loosen 3 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.
Fan motor fixing screws
Fan
motor
(MF1)
Fan motor
fixing screw
OCH533D