User manual

1260 Nanoflow Pump User Manual 97
Error Information
7
Module Error Messages
Valve Failed
Valve 0 Failed: valve A1
Valve 1 Failed: valve A2
Valve 2 Failed: valve B2
Valve 3 Failed: valve B1
One of the solvent selection valves in the module 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 cause Suggested actions
1 Solvent selection valve disconnected.
Ensure the solvent selection valve is connected
correctly.
2 Connection cable (inside instrument) not
connected.
Ensure the connection cable is connected
correctly.
3 Connection cable (inside instrument)
defective.
Exchange the connection cable.
4 Solvent selection valve defective.
Exchange the solvent selection valve.