CAUTION!
Disconnect the mains plug before any fault rectification work! Faults in the electrical
system must be rectified by a qualified electrician.
Malfunction
Possible cause
Solution
Motor does not
run.
Impeller blocked.
Remove dirt in the suction area.
Clean with a suitable tool
through the opening at the back
of the motor housing.
Thermal protection switch
has switched off.
Wait until the thermal protection
switch on the immersion pump
switches on again. Take note of
the maximum temperature of the
conveying medium. Have the
immersion pump inspected.
No mains power.
Check the fuses, have the
power supply checked by a
qualified electrician.
Float switch does not
switch off when the water
level rises.
Send the immersion pump to a
service facility.
Pump running but
does not feed.
Air in pump housing.
Vent the immersion pump by
holding it at an angle.
Blockage on the suction
side.
Remove dirt in the suction area.
Pressure line closed off.
Open the pressure line.
Pressure hose kinked.
Extend the pressure hose.
Feed rate too low
Hose diameter too small.
Use a bigger pressure hose.
Blockage on the suction
side.
Remove dirt in the suction area.
Feed head to high.
Observe max. Feed head, see
technical data!
If the faults cannot be rectified, please contact our customer service department.
HELP IN CASE OF MALFUNCTIONS
GB 05