Valve Switching Failed; Valve Tag Violation - Agilent Technologies 1290 Infinity II 2D-LC User Manual

11 Error Information
Module-Specific Error Messages

Valve Switching Failed

Error ID: 24001
The valve drive was not able to operate the valve head correctly. Either due to
mechanical reasons or the movement couldn't be detected correctly.
Probable cause
1
2

Valve Tag Violation

Error ID: 24006
The valve drive identified a different valve head than it had identified during the
last initialization.
Probable cause
1
Soft power-down power supply of the valve drive.
NOTE
Whenever you want to power cycle the valve drive for a re-boot, it needs to be
powered off for at least 10 seconds.
2D-LC User Guide
Mechanical problems. Friction too high or
blockages on the valve drive's motor or on
the valve head.
Defect Sensor on the Valve Drive Motor
A valve head has been exchanged
(hot-plugged) while the valve drive was still
powered on.
Suggested actions
• Check valve head for correct installation
• Try to identify the source of trouble by
installing a different valve head if possible.
• Contact your Agilent Service representative.
• Check valve head for correct installation
• Try to identify the source of trouble by
installing a different valve head if possible.
• Contact your Agilent Service representative.
Suggested actions
Change the valve head. It is important to have the
valve switched off for at least 10 s after or before
a new valve head has been installed.
314