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Page 47
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Appendix A2
A541-11-880 Issue A
Appendix A2
Troubleshooting
A2.1
Warnings
The pump controller generates a warning when a problem is encountered. Once the problem that caused a warning
has been resolved, the warning is cleared by the pump controller.
A2.1.1
LED warning indicators
If the pump encounters a problem, warnings are indicated on the LED on the front control panel and on the PDT if
fitted.
The warning LED on the front control panel illuminates continuously when a warning is generated.
If a PDT is fitted, the warning LED flashes to indicate a new warning. Refer to
for more information
on how warnings are indicated and how they can be acknowledged using the PDT.
Once all the warnings are cleared, the warning LEDs extinguish. If the warning LED is illuminated then connect a PDT
to determine the warning message and refer to Table A13 to identify the possible cause and corrective actions. If no
PDT is available then you will have to systematically work through the actions listed in Table A13 until the warning
is cleared.
A2.1.2
PDT warnings
If a PDT is fitted, each warning triggers a warning message to be displayed. Refer to
for more
information on how warnings are handled by the PDT.
lists the warning messages that might be displayed on the PDT with possible causes and actions you should
take.
Table A13 - Warnings
Warning Message
on PDT
‘Action’ Message
on PDT
Possible Cause
Action
Warning 1.01
Power interrupt
Check pwr supply
There has been a brownout of the
electrical supply to the pump lasting more
than 1 second.
Check the electrical supply
Warning 55.13
Sensor missing
-
The dry pump temperature sensor may
have become disconnected or failed.
- Check that the sensor is
fitted and is correctly
connected.
Warning 71.13
AC Sup Missing
See manual
The pump controller cannot communicate
with the accessory module
- Check that the accessory
module is correctly
connected to the pump and
then cycle the power to the
pump.
- If this warning persists,
contact Edwards.
Warning 152.01
Valve Not Shut
Check Gate Valve
The foreline gate valve has failed to close
Check the wiring and air
supply to the Gate valve.
Note:
This warning will
only clear when the
valve has
successfully been
opened and closed.
