117
OPERATING PROCEDURE
PHOTOS
4. Electrical parts box disassembly procedures:
[PUMY-125VMA]
(1) Remove the side panel (Refer to 1)
(2) Remove the top panel (Refer to 1)
(3) Disconnect the following wires from the
multi controller board.
• Thermistor (Discharge temperature detection):TH1
• Thermistor (Low pressure saturated temperature
detection):TH2
• Thermistor (Pipe temperature defection / Judging
defrost):TH5
• Thermistor (Outdoor temperature detection): TH6
• High-pressure sensor (Discharge pressure
detection): 63HS
• Expansion valve: LEV(A)
• Fan motor: MF1 and MF2
• Solenoid valve: SV1
• 4-way coil, 4-way valve: 21S4
(4) Remove the board plate.
Pull wires out of the electrical parts box after disconnecting
them.
(5) After removing the connector cover, remove the compressor
wire and the inner thermostat terminal.
(6) Remove the electrical box screw (1 pc : 4
o
10).
(7) Remove the valve bed screws from the right side of
the valve bed (2 pcs : 4
o
10).
(8) Remove the electrical box after slightly loosening the
rear panel. The electrical box is held by two claws on
the left and one on the right.
Photo 5
PUMY-125VMA
Rear panel
Electrical
parts box
Multi circuit
board
Valve bed
screws
Connector cover
Valve bed
Board plate
Power circuit board
3. Thermistor (TH6: outdoor air temperature sensor
detection) disassembly procedures:
(1) Remove the side panel (Refer to 1)
(2) Remove the top panel (Refer to 1)
(3) Remove the thermistor holder fixing screw (1 pc : 4
o
10),
and remove the thermistor holder.
(4) Remove the Thermistor (outdoor air temperature
detection: TH6).
(5) Remove the TH6 wire from the multi-functional
controller board in the electrical box and pull out of the
electrical box.
Photo 4
Rear
panel
Heat
exchanger
Thermistor holder screw
Thermistor
(TH6)
Thermistor
holder
Electric
parts box
screw
OC183E--4.qxp 10.5.6 0:54 PM Page 117
