Daikin GYEQ20AN, Руководство по обслуживанию

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Flow Charts for Troubleshooting SiAUY361411EA
151 Troubleshooting
23
Air-Fuel Ratio Controller Failure
Error
code
J1
Description
of the failure
Sub-code 0: While the unit is running, the air-fuel ratio controller does not function properly.
Sub-code 1: While the unit is running, the following conditions continue for 3 minutes: 1) the throttle valve
opening degree is equal to or lower than 500 pulses; 2) the current speed is equal to or lower
than 1150 min
-1
; 3) the current speed is equal to or lower than the target speed minus 100 min
-1
.
Possible
causes
of the failure Mixer malfunction
Flow chart
Check Mixer.
025890-00E
24
Intake Air Temperature Sensor 1 Disconnected /
Shorted
Error
code
J2
Description
of the failure
Sub-code 0: While the unit is running, intake air temperature 1 is reported to be equal to 200°C (which means
that intake air temperature sensor 1 is disconnected).
Sub-code 1: While the unit is running, intake air temperature 1 is reported as 201°C (which means that intake
air temperature sensor 1 is shorted).
Sub-code 2: While the unit is running, intake air temperature 2 is reported as 200°C (which means that intake
air temperature sensor 2 is disconnected).
Sub-code 3: While the unit is running, intake air temperature 2 is reported as 201°C (which means that intake
air temperature sensor 2 is shorted).
Sub-code 4: While the unit is running, intake air temperature 3 is reported as 200°C (which means that intake
air temperature sensor 3 is disconnected).
Sub-code 5: While the unit is running, intake air temperature 3 is reported as 201°C (which means that intake
air temperature sensor 3 is shorted).
Sub-code 6: While the unit is running, intake air temperature 4 is reported as 200°C (which means that intake
air temperature sensor 4 is disconnected).
Sub-code 7: While the unit is running, intake air temperature 4 is reported as 201°C (which means that intake
air temperature sensor 4 is shorted).
Sub-code 8: While the unit is running, intake air temperature 5 is reported as 200°C (which means that intake
air temperature sensor 5 is disconnected).
Sub-code 9: While the unit is running, intake air temperature 5 is reported as 201°C (which means that intake
air temperature sensor 5 is shorted).
Possible
causes
of the failure
Intake air temperature sensor failure; harness failure; main circuit board failure; sub circuit board failure
Flow chart
NO Check Intake
Air Temperature Sensor.
025891-00E01
Is Intake Air Temperature
Sensor Operating Normally?
YES
Check whether sensor
connected properly to Main
Circuit Board's and Sub-
Circuit Board's Harnesses.