Mitsubishi Electric Mr.SLIM PUHZ-RP1.6VHA Technical & Service Manual page 86

PUHZ-RP2.5VHA PUHZ-RP2.5VHA
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 (MF1)
(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 connectors, FAN11 and FAN12, on
controller circuit board in electrical parts box.
(6) Remove 4 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>,
thermistor<Outdoor>, thermistor<Heat sink>,
high pressure switch, four-way valve and bypass 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 (FAN11 and FAN12)
• Linear expansion valve (LEV-A and LEV-B)
• Thermistor <Outdoor pipe> (TH3)
• Thermistor <Discharge> (TH4)
• Thermistor <Outdoor 2-phase pipe, Outdoor> (TH6/7)
• Thermistor <Heat sink> (CN3)
• 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 wire.
(6) Remove an electrical parts box fixing screw (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.
PUHZ-RP3VHA PUHZ-RP3VHA
1
10) and slide
10) of the top
10) to detach the
25) to detach the
8) from the valve bad 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
Photo 3
Valve bed
Screw
Cover panel fixing screws
86
1
Top panel
Slide
Service panel
Service panel
fixing screws
Photo 2
Fan
motor
Fan motor fixing screws
(MF1)
Fan motor
fixing screws
Electrical parts box
Controller circuit
board
(C.B.)
Electrical parts
box fixing screw
Terminal block
(TB1)
Terminal cover
Motor for
compressor (MC)
Cover panel
(Front)