Problem
Possible Cause
Remedy
Only Art. no. 1758:
Flow Sensor signal faulty.
Flow Sensor blocked.
v
Clean Flow Sensor (see
“Cleaning the flow sensor”).
Info-LED blinks 2 times.
Pump has no suction within
6 minutes.
The pump sucks nothing up
Problem on pump side.
v
Immerse suction hose end
under water,
v
eliminate any leak on the
suction side,
v
clean check valve on the
suction line and check the
mounting direction,
v
clean suction filter on the
suction hose end,
v
clean filter lid seal and
screw lid until the stopper
(see 6. Maintenance),
v
clean fine-mesh filter in the
pump.
Suction hose deformed.
v
Use a new suction hose.
Pump motor does not start
Thermal circuit breaker activated
(motor overheated).
v
Allow the pump to cool
down for 20 minutes.
Info-LED blinks 3 times.
During the current operation,
the pump has extracted no
water for 30 seconds.
Water supply disrupted on the
suction side
Problem on pump side.
v
Immerse suction hose end
under water,
v
eliminate leak on the suction
side,
v
clean check valve on the
suction line and check the
mounting direction,
v
clean suction filter on the
suction hose end,
v
clean filter lid washer and
screw lid until the stop
(see 6. Maintenance),
v
clean fine-mesh filter in the
pump.
Suction hose bent.
v
Use a new suction hose.
Only Art. no. 1758: Flow Sensor
signal faulty
Flow Sensor blocked.
v
Clean Flow Sensor (see
“Cleaning the flow sensor”).
Pump motor does not start
anymore
Thermal circuit breaker activated
(motor overheated).
v
Allow the pump to cool
down for 20 minutes.
23
EN
