Fan Failed - Agilent Technologies 1220 Infinity II LC User Manual

10
Error Information
General Error Messages
The resistance across the temperature compensation sensor (NTC) on the
power switch board is dependent on ambient temperature. The change in
resistance is used by the leak circuit to compensate for ambient temperature
changes. If the resistance across the sensor falls below the lower limit, the
error message is generated.
Probable cause
1
2
3

Fan Failed

Error ID: 0068
The cooling fan in the module has failed.
The hall sensor on the fan shaft is used by the main board to monitor the fan
speed. If the fan speed falls below a certain limit for a certain length of time,
the error message is generated.
Depending on the module, assemblies (e.g. the lamp in the detector) are
turned off to assure that the module does not overheat inside.
Probable cause
1
2
3
198
Defective power switch assembly
Loose connection between the power
switch board and the main board
Defective main board.
Fan cable disconnected.
Defective fan.
Defective main board.
Suggested actions
Please contact your Agilent service
representative.
Please contact your Agilent service
representative.
Please contact your Agilent service
representative.
Suggested actions
Please contact your Agilent service
representative.
Please contact your Agilent service
representative.
Please contact your Agilent service
representative.
1220 Infinity II LC System User Manual