26
GB
IE
Troubleshooting
Faults
Causes
Remedies
Pump does
not start
Mains voltage is not applied
Check plug socket, cable, line and
plug, where appropriate, have re-
paired through electrical specialist
Float switch (1) does not switch
Check the position of the float switch
Pumps has
no discharge
Water level too low during com-
missioning
Immerse pump deeper
Thermal protection switch has
switched off
Wait until the motor switches on again
after cooling down
Pull out the mains plug and clean the
suction foot/impeller
Filter cover (22) / Filter (23)
blocked
Clean the filter cover/filter
Pump opera-
ting but not
pumping
Pressure line closed
Open the shut-off valve (16) on the distri-
butor or other taps, nozzles, etc.
Flow rate
insufficient
Pump performance reduced due
to heavy dirt contamination or
abrasive water impurities
Pull out the mains plug and clean the
pump, replace consumable parts if
necessary
(see “Cleaning, maintenance and sto
-
rage”)
Float switch (1) cannot sink
Check the position of the float switch
Filter cover (22) / Filter (23)
blocked
Clean the filter cover/filter
Pumping capacity reduced due
to very dirty and abrasive ad-
mixtures of water
Pull out the mains plug and clean the
pump, replace consumable parts if
necessary
(see “Cleaning, maintenance and sto
-
rage”)
Pump switch-
es off after a
short period
Motor contactor disconnects the
pumps because of water pollu-
tion that is too severe
Pull out the mains plug and clean.
Water temperature too high, mo-
tor contactor breaks
Note maximum water temperature of
35°C!
