Daikin GYEQ20AN Service Manual page 170

Flow Charts for Troubleshooting
33
Oil Temperature Sensor Disconnected/Shorted
Sub-code 0: After 20 minutes have elapsed since the start of operation, clutch 1 is ON and oil temperature 1
Sub-code 1: While the unit is running, oil temperature 1 is reported as 201.0°C (which means that oil
Sub-code 2: After 20 minutes have elapsed since the start of operation, clutch 2 is ON and oil temperature 2
Sub-code 3: While the unit is running, oil temperature 2 is reported as 201.0°C (which means that oil
Description
of the failure
Sub-code 4: After 20 minutes have elapsed since the start of operation, oil temperature 3 remains equal to or
Sub-code 5: While the unit is running, oil temperature 3 is reported as 201.0°C (which means that oil
Sub-code 6: While the unit is running, oil temperature 4 is reported as 200.0°C (which means that oil
Sub-code 7: While the unit is running, oil temperature 4 is reported as 201.0°C (which means that oil
Oil temperature sensor failure; harness failure; main circuit board failure
Possible
causes
of the failure
Flow chart
Are Oil Temperature Sensors
Operating Normally?
YES
Check whether sensor
connected properly to Main
Circuit Board's Harness.
159
remains equal to or lower than -30°C for 1 minute.
temperature sensor 1 is shorted).
remains equal to or lower than -30°C for 1 minute.
temperature sensor 2 is shorted).
lower than 0.0°C for 1 minute.
temperature sensor 3 is shorted).
temperature sensor 4 is disconnected).
temperature sensor 4 is shorted).
NO
Temperature Sensors.
Check Oil
025901-00E
SiAUY361411EA
Error
JJ
code
Troubleshooting