Valve Failed - Agilent Technologies 1100 Series Reference Manual

Valve Failed

Valve Failed 0:failed to switch to the position where ports 1 and 2 are
connected.
Valve Failed 1:failed to switch to the position where ports 1 and 6 are
connected.
The column-switching valve failed to switch.
The switching of the column-switching valve is monitored by two micro
switches on the valve assembly. The switches detect the successful completion
of the valve movement within a predefined time window. If the valve fails to
reach the end point, or fails to reach the end point within the time window,
the error message is generated.
Probable Causes
• Defective column-switching valve.
• Defective CCM board.
Suggested Actions
1100 Series TCC Reference Manual
Exchange the column-switching valve.
Exchange the CCM board.
Troubleshooting and Test Functions
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