Disassembly Procedure - Mitsubishi Electric PU-P2VGA Technical & Service Manual

9

DISASSEMBLY PROCEDURE

PUH-P5/6YGA
OPERATING PROCEDURE
1. Removing the Service panel and Top panel
(1) Remove the 3 service panel fixing screws (5
slide the hook to remove the service panel.
(2) Remove the screws (3 for front, 2 for rear/5
top panel and remove it.
<When the rear screws of the top panel are not possible
to remove>
Remove the 3 front screws (5
lift the front side of the top panel.
2. Removing the Fan and Fan motor
(1) Remove the 6 fan guard screws (5
(See Photo 1)
(2) Remove the propeller nut (M8) and propeller fan.
(3) Remove the 3 fan motor screws (5
fan motor.
3. Removing the Electrical box
(1) Remove the service panel. (See Photo 1)
(2) Remove the top panel. (See Photo 1)
(3) Remove the Bypass valve, Crankcase heater, Pressure
switch<for high pressure>, Pressure switch <for low
pressure>, Liquid temperature thermistor, Discharge
temperature thermistor, condenser/evaporator temperature
thermistor and 4-way valve from the connector housing on
the controller board,then disconnect the fan motor lead wire
from the housing mentioned before and the condenser lead
wire for the fan from the electrical box.
<Diagram symbol in the connector housing>
Bypass valve solenoid coil (SV) · Crankcase heater (CH)
Pressure switch <for high pressure> (63H)
Pressure switch <for low pressure> (63L)
Liquid temperature thermistor (TH3)
Discharge temperature thermistor (TH4)
Condenser/evaporator temperature thermistor (TH6)
R.V. coil (21S4) · Fan motor (MF3, MF4)
(4) Remove the terminal cover and disconnect the compressor
lead wire and inner thermal device terminal.
(5) Remove the electrical box screw (4
box to remove it. The electric box cover is hooked at 2
points on the left and 1 point on the right.
15) and
15) of the
15) of the top panel and
15) to remove it.
25) to remove the
10) and lift the
25
PHOTOS
Photo 1
Top panel screws
Fan guard
Fan guard screws
Photo 2
Fan motor
Photo 3
Fan guard
Electric parts box
Compressor
Top panel
Service panel
Service panel
screws
Fan motor screws
Outdoor unit
controller board
Electrical box
fixing screw
Terminal cover
Cover panel
Cover panel fixing screw