Disassembly Procedure - Mitsubishi Electric PU-P71VHA Service Manual

12

DISASSEMBLY PROCEDURE

PUH-P71VHA.UK PUH-P100VHA.UK PUH-P71YHA.UK PUH-P100YHA.UK
PU-P71VHA.UK PU-P100VHA.UK PU-P71YHA.UK PU-P100YHA.UK
OPERATING PROCEDURE
1. Removing the service panel and top panel
(1) Remove 3 service panel fixing screws (5
the hook on the right downward to remove the service
panel.
(2) Remove screws (3 for front, 3 for rear/5
panel and remove it.
2. Removing the fan motor (MF)
(1) Remove the service panel. (See figure 1.)
(2) Remove the top panel. (See figure 1.)
(3) Remove 5 fan grille fixing screws (5
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 MF3 on controller circuit
board in electrical parts box.
(6) Remove 3 fan motor fixing screws (5
fan motor. (See photo 2.)
3. Removing the electrical parts box
(1) Remove the service panel. (See figure 1.)
(2) Remove the top panel. (See figure 1.)
(3) Disconnect the indoor/outdoor connecting wire from
terminal block.
(4) Remove all the following connectors from controller circuit board;
fan motor, linear expansion valve, thermistor<Outdoor pipe>,
thermistor<Discharge>, thermistor<Outdoor 2-phase pipe>,
crankcase heater, high pressure switch, four-way valve.
Then remove a screw (4
remove the lead wire.
Pull out the disconnected wire from the electrical parts box.
<Diagram symbol in the connector housing>
• Fan motor (MF3)
• Linear expansion valve (CNLEV)
• Thermistor <Discharge> (TH4)
• Thermistor <Outdoor 2-phase pipe, Outdoor pipe> (TH3/TH6)
• Crankcase heater (CH)
• High pressure switch (63H)
• Solenoid valve coil <Four-way valve> (21S4)
(5) Disconnect the compressor relay connector.
(6) Remove 2 electrical parts box fixing screws (4
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.
10) and slide
10) of the top
10) to detach the
16) to detach the
8) from the valve bed to
10) and
PHOTOS & ILLUSTRATION
Top panel fixing screws
Figure 1
Fan grille
Grill fixing screws
Photo 1
Front panel
Propeller
Nut
Front panel fixing screws
Fan motor fixing screws
Photo 3
Valve bed
Cover panel
fixing screws
66
Top panel
Slide
Service panel
Service panel
fixing screws
Photo 2
Fan motor
(MF)
P71
Fan motor fixing screws
P100
Fan motor(MF)
Electrical parts box
Controller circuit
board
(O.B.)
Electrical parts
box fixing screws
Terminal block
(TB1)
Cover panel
(Front)