Daikin GYEQ20AN Service Manual page 153

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