Encoder Missing; Pump Head Missing - Agilent Technologies InfinityLab LC Series User Manual

6 Error Information
Module Error Messages

Encoder Missing

Error ID: 2046, 2050, 2510
The optical encoder on the pump motor in the module is missing or defective.
The processor checks the presence of the pump encoder connector every 2 s. If
the connector is not detected by the processor, the error message is generated.
Probable cause
1
2

Pump Head Missing

Error ID: 2202, 2212
The pump-head end stop in the pump was not found.
When the pump restarts, the metering drive moves forward to the mechanical
end stop. Normally, the end stop is reached within 20 s, indicated by an increase
in motor current. If the end point is not found within 20 s, the error message is
generated.
Probable cause
1
2
Preparative Binary Pumps User Manual
Defective or disconnected pump encoder
connector.
Defective pump drive assembly.
Pump head not installed correctly (screws
not secured, or pump head not seated
correctly).
Broken piston.
Suggested actions
Please contact your Agilent service
representative.
Please contact your Agilent service
representative.
Suggested actions
Install the pump head correctly. Ensure nothing
(e.g. capillary) is trapped between the pump head
and body.
Exchange the piston.
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