Wilo Star-Z Série Notice De Montage Et De Mise En Service page 14

Faults
Faults
Pump does not
start.
Pump is making
noises.
14
7 Faults
Causes
Interruption in the power
supply, short- circuit or
defective fuses.
Motor is blocked, e.g. by
deposits from the water
mains.
Motor scraping, e.g.
through deposits from
the water mains
Running dry, too little
water.
Air in the pump.
Note: If you cannot remedy the fault,
contact a specialist retailer.
Remedies
Have the power supply
checked by a qualified
electrician.
Have the pump removed
by a qualified technician

Page 10.
Check that the impeller
can move by turning it
and rinse out the dirt that
has accumulated.
Check the check valves,
they must be fully open.
Switch the pump on/off
5 times for 30 s in each
case.
WILO SE 02/2021