Troubleshooting; A01 Engine Oil Pressure Error - Panasonic 2WAY Multi Technical & Service Manual

(4) Troubleshooting

A01 Engine Oil Pressure Error

Error detection method
• When the engine oil pressure switch is OFF continuously for 4 seconds during engine operations (complete
combustion,) the engine will be shut down momentarily and an error fl ag set. The reason for the engine being
shut down is due to the error fl ag being triggered fi ve consecutive times in one hour.
* When the engine oil pressure switch is not detected within ten seconds of the engine being started (complete
combustion.)
• When oil pressure (engine earth common) K21 or K25 (short circuit) are detected at the engine oil pressure
switch contact with oil pressure detected.
Troubleshooting
1
1-1 Is there oil in the storage side of the oil tank?
Oil level
1-2 Any oil leaks or dirty oil?
1-3 Is the tank side of the oil tank empty?
1-4 Does the oil fi ll pump operate properly?
1-5 Any oil fi ll pump wiring broken or disconnected?
2 After engine operation (complete combustion), does the voltage
Oil 2-1 between the oil pressure switch terminal (+) and body ground (–)
pressure measure DC 0V?
switch
At engine start, does the oil pressure measure 49kPa (0.5kg/cm
2-2
more?
2-3 Is the oil fi lter clogged?
3 Does any of the wiring below contain broken wires or suffer from poor
Wiring
connection, contact or crimping? • Wiring from outdoor main board
connector 2P (red) CN012 No. 1 to oil pressure • Wiring from outdoor
3-1
main board connector 2P (red) CN021 No. 1 to power board connector
2P (red) CN038 No. 1 Wiring between switches • Wiring from outdoor
main board connector FG CN075 to (-) terminal on starter power supply
● 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
• 1-1
Oil tank, top view
Tank side
IV–2
Yes 2-1
No 1-2
Yes Repair
No 1-3
Yes Add oil
No 1-4
Check for pinched
Yes
or clogged hose
No 1-5
Yes Repair wiring
No Replace pump
Yes 3-1
No 2-2
Oil pressure switch
Yes
2
) or
defective
No 2-3
Yes Replace oil fi lter
No Engine is defective
Yes Repair wiring
Replace outdoor
No
main board
Storage side