P04 Refrigerant High-Pressure Switch Operation - Panasonic 2WAY Multi Technical & Service Manual

P04 Refrigerant High-Pressure Switch Operation

Error detection method
• When high pressure switch turns OFF
Setting: 4.15MPa
* Turns ON when contact is not defective (switch automatically resets)
Troubleshooting
1
1-1 Is the outdoor unit a renewal-dedicated unit?
Model
setting
Is the model setting correct? (Is the parameter a renewal
check
1-2 setting?)
Check to make sure the setting is [No.10FirSt]-[rEF02].
2
Operation 2-1 Are operations possible?
possibility
3
Measure the high pressure to discover if it is high. Are
3-1
High
malfunctions occurring?
pressure
Is the high pressure switch conducting? Is there conduction
switch
in the high pressure switch side when the 63PH4P (white)
3-2
CN014 connector on the outdoor unit's power board is
disconnected?
● 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)
IV–84
Yes 1-2
No 2-1
Yes 2-1
No Revise settings
Yes 3-1
No 3-2
Yes Refer to section P20
No 3-2
Replace the outdoor
Yes
unit's power board
Replace the high
No
pressure switch