4-28 Maintaining and Troubleshooting the Waters 515 Pump
Error message on
the display reads:
Lo Press
(continued)
Visible leaks Carefully tighten any loose
fittings.
Ambient temperature
has changed
Stabilize operating temperature.
Error message on
the display reads:
EEPROM Error
All Parameters
have been reset
Press Menu to
acknowledge
EEPROM failure during
startup
Press Menu to acknowledge the
error, then contact Waters
Technical Service.
Error message on
the display reads:
EEPROM Error
Press Menu to
acknowledge
EEPROM failure while
pump is in a Ready or
Run state
If running, press Menu to
acknowledge the error. Continue
the run while carefully observing
pump operation. Contact Waters
Technical Service.
Pump does not run
(fan and LCD
display are off)
Pump not connected to
power source
Ensure power cable is properly
connected to power source and
pump.
No power at outlet Check the outlet by connecting to
another electrical unit known to
be working. If that unit does not
work, relocate the pump to a
functioning electrical outlet.
Blown fuse Replace the fuses (see“Replacing
the power supply fuses” on
page 2-4).
LCD display is
blank, but fan is
running
EEPROM failure Contact Waters Technical
Service.
Troubleshooting error messages and pump malfunctions (Continued)
Symptom Possible cause Corrective action
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