Disassembly Procedure; Removing The Service Panel And Top Panel; Removing The Fan Motor; Removing The Electrical Parts Box - Mitsubishi Electric PUHZ-RP3VHA Technical & Service Manual

11

DISASSEMBLY PROCEDURE

PUHZ-RP3VHA
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 grille fixing screws (5
(See figure 1.)
(4) Remove a nut (for right handed screw of M6) to detach
the propeller fan. (See photo 1.)
(5) Disconnect the connectors, FAN11 and FAN12, on
controller 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 board;
fan motor, linear expansion valve, outdoor pipe temperature
thermistor, discharge temperature thermistor,
condenser/evaporator temperature thermistor,
outside temperature thermistor, radiator panel temperature
thermistor, high pressure switch, 4-way valve, and
bypass valve. Then remove a screw (4
bad to 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) • Outdoor pipe temperature
thermistor (TH3) • Discharge temperature thermistor
(TH4) • Condenser/evaporator temperature thermistor,
Outside temperature thermistor (TH6/7) • Radiator
panel temperature thermistor (CN3) • High pressure
switch (63H) • 4-way valve (21S4) • Bypass valve (SV2)
(5) Remove the terminal cover and disconnect the compress-
or 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.
10) and slide
10) of the top
10) to detach the grille.
Nut
25) to detach the
8) from the valve
10) and
66
PHOTOS & ILLUSTRATION
Top panel fixing screws
Figure 1
Grille
Grill fixing screws
Photo 1
Front panel
Propeller fan
Front panel fixing screws
Photo 3
Electrical parts box
Valve bed
Screw
Cover panel fixing screws
Top panel
Slide
Service panel
Service panel
fixing screws
Photo 2
Fan
motor
Fan motor fixing screws
(MF1)
Fan motor
fixing screws
Outdoor unit
controller board
(C.B.)
Electrical parts
box fixing screw
Terminal block
Terminal cover
Compressor(MC)
Cover panel
(Front)