Mitsubishi Electric PUMY-P125VMA1 Technical & Service Manual page 87

OPERATING PROCEDURE
3. Thermistor (TH6: outdoor air temperature sensor
detection) disassembly procedures:
(1) Remove the side panel (See photo 1)
(2) Remove the top panel (See photo 1)
(3) Remove the thermistor holder fixing screw (1 pc : 4o10),
and remove the thermistor holder.
(4) Remove the Thermistor (outdoor air temperature
detection).
(5) Remove the TH6 wire from the multi-functional
controller board in the electrical box and pull out of the
electrical box.
4. Electrical parts box disassembly procedures:
[PUMY-P125VMA PUMY-P125VMA
(1) Remove the side panel (See photo 1)
(2) Remove the top panel (See photo 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 coil: SV
• 4-way valve coil: 21S4
(4) Remove the board plate.
Pull wires out of the electrical parts box after disconnecting
them.
(6) After removing the connector cover, remove the compressor
wire and the inner thermostat terminal.
(7) Remove the electrical box screw (1 pc : 4 o 10).
(8) Remove the valve bed screws from the right side of
the valve bed (2 pcs : 4 o 10).
(9) 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 4
Rear
panel
Photo 5
PUMY-P125VMA
]
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PUMY-P125VMA
87
PHOTOS
Thermistor
(air temperature
detection)
1
Power circuit board Board plate
Connector cover Valve bed
Thermistor holder screw
Thermistor
holder
Heat
exchanger
Electrical
parts box
Rear panel
Multi circuit
board
Electric
parts box
screw
Valve bed
screws