Valve failed – Agilent Technologies Quaternary Pump 1100 Series User Manual
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Troubleshooting and Test Functions
Valve Failed
Valve Failed
Valve 0 Failed:
valve A
Valve 1 Failed: valve B
Valve 2 Failed: valve C
Valve 3 Failed: valve D
One of the valves of the multi-channel gradient valve has failed to switch
correctly.
The processor monitors the valve voltage before and after each switching
cycle. If the voltages are outside expected limits, the error message is
generated.
Probable Causes
•
Gradient valve disconnected.
•
Connection cable (inside instrument) not connected.
•
Connection cable (inside instrument) defective.
•
Gradient valve defective.
Suggested Actions
❏ Ensure the gradient valve is connected correctly.
❏ Ensure the connection cable is connected correctly.
❏ Exchange the connection cable.
❏ Exchange the gradient valve.