English (GB)
12
9. Fault finding
See also section 7.4 Service instructions.
Warning
Remove the fuse, pull out the plug, or switch off the power supply.
Make sure that the power supply cannot be accidentally switched on.
All rotating parts must have stopped moving.
The product must only be serviced by trained service personnel.
Fault Cause Remedy
1. Motor does not start
when the level in the
tank reaches the start
level.
a) Supply failure. Check the power supply.
b) Fuse blown.
If new fuse blows at once,
either cable or motor is faulty.
Replace the fuse.
Measure cable and motor. If cable or
motor is defective, replace the defective
parts.
c) Impeller/grinder stuck; thermal
switch tripped.
Free the impeller/grinder, and wait until
the motor is cooled down and the
thermal switch has reset.
d) Pressure switch pipe blocked. Remove the pressure switch and clean
the pipe.
2. Motor hums but does
not operate.
a) Impeller/grinder stuck. Free the impeller/grinder and check that
it can rotate freely.
b) Motor or capacitor defective. Replace the motor or capacitor.
c) Control board defective. Replace the control board.
3. Motor runs
continuously or at
irregular intervals.
a) Water leaking from inlet into
tank.
Check for leaking appliances.
b) Water leaking back into tank
from discharge pipe.
Check the non-return flap.
c) Pressure switch defective. Replace the pressure switch unit.
4. Motor runs but does
not evacuate water.
a) Pump or tank blocked. Remove blockage.
b) Air lock in pump or vent hole in
pump housing blocked.
Check operation of vent valve in the
tank.
Check that the carbon filter is not wet.
Check that the vent hole in the pump
housing is not blocked.
c) Discharge port or pipe blocked. Remove blockage.
Check the non-return flap.
5. The lifting station
evacuates slowly.
a) Discharge pipe is too long or
has an excessive number of
bends.
Increase discharge pipe size.
Change pipework to reduce number of
bends.
Change bends to swept bends.
b) The pump housing is leaky. Replace the pump housing
(service part).
c) Hydraulics or grinder blocked. Check and clean the hydraulics and
grinder.
6. Rattling noise from the
lifting station, but
water is evacuated.
a) Foreign body hitting the
impeller/grinder.
Remove the foreign body.
7. Odour from the tank. a) Carbon filter contaminated. Replace the carbon filter.
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