Disassembly Procedure - Mitsubishi Electric PUHZ-FRP71VHA2 Service Manual

14

DISASSEMBLY PROCEDURE

PUHZ-FRP71VHA2
: Indicates the visible parts in the photos/figures.
: Indicates the invisible parts in the photos/figures.
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)
(1) Remove the service panel. (See Photo 1)
(2) Remove the top panel. (See Photo 1)
(3) Remove the fan grille fixing screws (4 for front, 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 connector CNF1 on controller circuit
board in electrical parts box.
(6) Disconnect the lead wire from 2 clamps on the separator
and electrical parts box (on the ceiling, front side).
(7) Remove the fan motor fixing screws (4 for front, 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 and power
supply wire from the terminal block.
(4) Disconnect the connector CNF1, LEV-A, LEV-B and
LEV-C on the controller circuit board.
<Symbols on the board>
• CNF1: Fan motor
• LEV-A, LEV-B, LEV-C: LEV
• SV1,SV2,SV3: Bypass valve coil
(5) Disconnect the pipe-side connections of the following parts.
• Thermistor <Liquid> (TH3)
• Thermistor <Discharge> (TH4)
• Thermistor <2-phase pipe> (TH6)
• Thermistor <Ambient> (TH7)
• Thermistor <Comp. surface> (TH33)
• High pressure switch (63H)
• High pressure sensor (63HS)
• 4-way valve coil (21S4)
(6) Disconnect the lead wires from 2 clamps on the separator.
(7) Remove the terminal cover and disconnect the compres-
sor lead wire.
(8) Remove the electrical parts box fixing screws (2 for front,
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.
OCH665B
PUHZ-FRP71VHA2R1
Photo 1
Photo 2
Nut
Front panel fixing screws
Photo 4
84
PHOTOS/FIGURES
Top panel fixing screws
Fan grille
Grille fixing
screws
Cover panel
(Front)
Propeller
Front panel
Electrical parts box
Terminal block
(TB1)
Terminal block Controller circuit
(TB2) board (C.B.)
Top panel
Side panel (R)
Slide
Service panel
Cover panel
(Rear)
Service panel
fixing screws
Photo3
Fan
motor
Fan motor fixing screws
(MF1)
Fan motor
fixing screws
Electrical parts box
fixing screws