Panasonic 2WAY Multi - A14 Engine Oil Pressure Switch Error

IV–14
A14 Engine Oil Pressure Switch Error
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Error detection method
• When starting the engine, if the oil pressure switch is ON for 6 seconds or more (contact closed) before
complete combustion, an error fl ag is set. An abnormal stop results on the fi rst occurrence. However, if
turned OFF, the error fl ag is automatically reset and the starting sequence continues.
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Troubleshooting
1
Wiring
1-1
Can the problem be reproduced when the wire connected to
the oil pressure switch is disconnected? (Note: Avoid allowing
the disconnected wire from coming into contact with the frame
or engine.)
Yes 1-2
No 2-1
1-2
Is the wiring between the outdoor unit’s main board connector
2P (red) CN012 and the oil pressure switch grounded?
(Disconnect the wire between the above-mentioned connector
and oil pressure switch and measure the resistance between
the wire and the engine.)
Yes Repair Wiring
No
Replace the outdoor
unit’s main board
2
Oil pressure
switch
2-1
Disconnect the oil pressure switch from the engine and purge the oil from the oil gallery.
Having done that, reconnect the oil pressure switch and start operations. If the problem
occurs again, replace the oil pressure switch.
● For work procedure for replacing outdoor main board, see “5. Reference Document”.
● 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
• 1-2
With oil pressure: DC0V
No oil pressure: DC12V
GHPtroubleshooting.indbIV‒14GHPtroubleshooting.indbIV‒14 2012/11/2611:20:072012/11/2611:20:07