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Troubleshooting
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TROUBLESHOOTING
CAUTION!
Before you attempt to remedy any malfunction of your pump, pull the plug to prevent injury or
death due to electrocution!
Fault Cause Solution
Impeller is blocked Remove blockage in inlet area.
Clean the impeller with a jet of
water
Thermal switch has switched off Wait until the thermal switch has
automatically turned the pump
on again. Check water tempera-
ture. Have the pump checked
No power Have a qualified electrician
check the power supply
Motor does not run
Float switch does not work
even though liquid is above cut-
in level
Send pump to your nearest AL-
KO service centre
Air is trapped in the pump hou-
sing
Tilt the pump to let the trapped
air out
Suction slots are blocked Remove blockage and clean
suction slots
Pressure line is blocked Clear blockage in pressure line
Submersible pump runs but is
not pumping out liquid.
Pressure hose is bent Straighten out pressure hose
Hose diameter is too small Attach a hose with a larger dia-
meter
Suction slots are blocked Remove blockage and clean
suction slots
Submersible pump is only pum-
ping out liquid very slowly or
weakly.
Pumping height is too great Lower pumping height
ADVICE
If you are unable to remedy a malfunction, please call the AL-KO service centre nearest you.
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