Panasonic 2WAY Multi - P04 Refrigerant High-Pressure Switch Operation

IV–84
P04 Refrigerant High-Pressure Switch Operation
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Error detection method
• When high pressure switch turns OFF
Setting: 4.15MPa
* Turns ON when contact is not defective (switch automatically resets)
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Troubleshooting
1
Model
setting
check
1-1 Is the outdoor unit a renewal-dedicated unit?
Yes 1-2
No 2-1
1-2
Is the model setting correct? (Is the parameter a renewal
setting?)
Check to make sure the setting is [No.10FirSt]-[rEF02].
Yes 2-1
No Revise settings
2
Operation
possibility
2-1 Are operations possible?
Yes 3 -1
No 3-2
3
High
pressure
switch
3-1
Measure the high pressure to discover if it is high. Are
malfunctions occurring?
Yes Refer to section P20
No 3-2
3-2
Is the high pressure switch conducting? Is there conduction
in the high pressure switch side when the 63PH4P (white)
CN014 connector on the outdoor unit’s power board is
disconnected?
Yes
Replace the outdoor
unit’s power board
No
Replace the high
pressure switch
● For board and Electrical Wiring Diagram, see Chapter 6.
• Outdoor main board: page VI-2
• Outdoor power board: page VI-3
• Converter board: VI-4
• Indoor control board for DC motor models: page VI-5
• Outdoor Unit Electrical Wiring Diagram: page VI-6 *Reference (Electrical Wiring Diagram A-B-3)
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