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DISASSEMBLY PROCEDURE
9
OPERATING PROCEDURE
PUHZ-W90VHA
1. Removing the service panel and top panel
(1) Remove 3 screws (5x10) and slide the hook on the right
downward to remove the service panel.
(2) Remove screws (3 for front, 3 for rear/5x10) of the top
panel and remove it.
Figure 1
Top panel fixing screws
Top panel
Service panel
fixing screws
Service panel
Grille fixing screws
Fan grille
Slide
2. Removing the fan motor (MF1)
(1) Remove the service panel. (See figure 1.)
(2) Remove the top panel. (See figure 1.)
(3) Remove 5 screws (5x10) to detach the fan grille.
(See figure 1.)
(4) Remove a nut (for right handed screw of M6) to detach the
propeller. (See photo 1.)
(5) Disconnect the connector CNF1 on controller circuit board
in electrical parts box.
(6) Remove 4 screws (5x25) to detach the fan motor.
(See photo 2.)
Photo 1
Propeller
Front panel
Front panel fixing screws
Nut
Fan motor fixing screws
Fan
motor
(MF1)
Fan motor
fixing screws
Photo 2
3. Removing the electrical box
(1) Remove the service panel. (See figure 1.)
(2) Remove the top panel. (See figure 1.)
(3) Disconnect the connecting wires from terminal block.
(4) Remove all the following connectors from controller circuit board;
fan motor, linear expansion valve(x2), thermistor<Liquid pipe>,
thermistor<Discharge>, thermistor<Plate HEX Liquid>,
thermistor<Outdoor ambient>, high pressure sensor,
high pressure switch, four-way valve and bypass valve.
Then remove a screw (4x8) from the valve bed to remove
the lead wire.
Pull out the disconnected wire from the electrical parts box.
<Diagram symbol in the connector housing>
• Fan motor (CNF1)
• Linear expansion valve (LEV-A and LEV-B)
• Thermistor <Liquid pipe> (TH3)
• Thermistor <Discharge> (TH4)
• Thermistor <Plate HEX Liquid, Outdoor Ambient> (TH6/7)
• High pressure sensor (63HS)
• High pressure switch (63H)
• Solenoid valve coil <Four-way valve> (21S4)
• Solenoid valve coil <Bypass valve> (SV2)
(5) Remove the terminal cover and disconnect the compressor
lead wires.
(6) Remove a screw (4x10) 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.
PHOTOS&ILLUSTRATION
Photo 3
Electrical parts box
Electrical parts box
fixing screw(4x10)
Controller circuit board(C.B.)
Summary of Contents for PUHZ-W90VHA
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