Waters 2545 Binary Gradient Module Operator's Manual page 84

Explanation of error message (Continued):
Error message
Pump Motor Driver HW
Fault
Pump Motor Lost
Synchronization
Solvent Select Valve HW
Failure
Stop Flow Input Activated
Stop Flow Key pressed
System Over Pressure
System Under Pressure
4-6 Troubleshooting
Explanation
The electronics detected an over-current
condition on the pump motors. If this message
persists, call Waters Technical Service.
A requested pump motor movement failed its
encode feedback check. This is usually caused
by pressures exceeding 34,500 kPa (345 bar,
5000 psi) at flow rates over 100 mL/min.
The electronics detected an over-current
condition in the manifold circuitry. If this
message persists, call Waters Technical
Service.
The pump was stopped through the Stop Flow
input on the rear panel.
The pump was stopped from the Stop Flow
button on the instrument.
The system pressure exceeded the method-
defined high-pressure limit. This may be
caused by:
• a bad transducer or transducer connection
• a stoppage in the system such as a clogged
injector, plugged column, bent tubing, etc.
The system pressure was below the method
defined low-pressure limit for over 30 seconds.
Possible causes include a leak, loss of flow,
check valve malfunction, or setting the
low-pressure limit too high.