15
PROBLEM
POSSIBLE CAUSE
SOLUTION
No electric power
The pump
does not start
Check power supply
Check wiring connections
Check power supply within the
voltage range prescribed on the
pump nameplate
Pump is blocked
Rotate the rotor shaft at the blade
end or dismantle the pump and
remove particles from pump cover
Static inlet/outlet pressure exceeded
Reposition pump
Controller damaged
Replace the controller
Suction is blocked
Pump runs with
no water being
discharged
Clear blockage
Pump is not primed
Remove the drain plug and ensure
pump is filled with water
Pump drawing in air
Check inlet pipes if there is a
leakage
Pump inlet pressure is too low
Insufficient
water pressure
Check the inlet pressure or inlet
pipe diameter
Blockage in inlet pipe
Clean the inlet pipe or the pump
Leakage in inlet pipe
Repair the inlet pipe
The outlet pressure is too low
Increase the pressure setting
Pump does not
stop
Leak in the pipe line
Check the pipe line and eliminate
the leak
Impeller blocked
Dismantle the pump and remove
the particles
Faulty pressure sensor
Replace the sensor
