Daikin GYEQ20AN, Руководство по обслуживанию

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SiAUY361411EA Flow Charts for Troubleshooting
Troubleshooting 142
13
Oil Pressure Switch System Failure
Error
code
F3
Description
of the failure
Sub-code 0: The oil pressure switch fails to turn from ON to OFF within 15 seconds after engine startup.
Possible
causes
of the failure
Oil pressure switch failure; harness failure; main circuit board failure; engine lubricating oil pump failure
Flow chart
NO
Check Oil Pressure Switch.
NO
Check Electrical
Wiring System.
See Flow Chart In
"Oil Pressure Too Low" Section.
025876-00E
Is Oil Pressure Switch
Operating Normally?
YES
YES
Is Oil Pressure Switch
Connected Properly To Main
Circuit Board's Harness?
14
Cooling Water Temperature Sensor
Disconnected/Shorted
Error
code
F4
Description
of the failure
Sub-code 0: While the unit is running, the cooling water temperature is reported as 200°C (which means that
the cooling water temperature sensor is disconnected).
Sub-code 1: While the unit is running, the cooling water temperature is reported as 201°C (which means that
the cooling water temperature sensor is shorted).
Possible
causes
of the failure
Cooling water temperature sensor failure; harness failure; main circuit board failure
Flow chart
NO
Check Cooling Water
Temperature Sensor.
025877-00E
Is Cooling Water Temperature
Sensor Operating Normally?
YES
Check whether the sensor is
connected properly to Main
Circuit Board's Harness.