EPS 1001905, Operation And Maintenance Manual, Page: 23 / 28

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Steadypres VSD
OVER TEMP MODULE Module overheating due to overload check the pump load
COM ERROR
No communication between control board
and power board
Check the integrity of the connection cable
and connections; the power board could be
damaged
LOW LEVEL No level signal with level signal input on
Make sure there is water at suction or check
level signal operation
EXT OFF
Placing out of service by means of external
signal
Check the external signal
none Pressure sensor fault
Check the display pressure with a reference
manometer, re-calibrate or substitute the
pressure sensor
PROBLEM Pump always running even when not required
Message Cause Intervention
None System leaks greater then 2 l/min Identify the leaks and repair
None Flow sensor fault or locked open Inspect and check the flow sensor
PROBLEM The pump stops too soon when requested
Message Cause Intervention
none Flow rate sensor fault Check the flow rate sensor
Message Cause
Message Cause Intervention
none Air inside suction manifold Bleed the suction system
none Pump blocked or damaged Inspect the pump and eliminate the problem
Steadypres VSD Steadypres VSD