Maintenance/faults
Installation and operating instructions Wilo-Star-Z NOVA
13
Engl
ish
7
Maintenance/faults
8
Faults
Causes
Remedies
Pump does not
start.
Interruption in the power
supply, short- circuit or
defective fuses.
Have the power supply
checked by a qualified
electrician.
Time switching function
has switched off auto-
matically (Star-Z NOVA C
version only).
Check the plug clock
timer setting.
Motor is blocked, e.g. by
deposits from the water
mains.
Have the pump removed
by a qualified technician
>
Page 9.
Check that the impeller
can move by turning it
and rinse out the dirt that
has accumulated.
Pump is making
noises.
Motor scraping, e.g.
through deposits from
the water mains
Running dry, too little
water.
Check the check valves,
they must be fully open.
Air in the pump.
Switch the pump on/off
5 times for 30 s in each
case.
Note:
If you cannot remedy the fault,
contact a specialist retailer.
Summary of Contents for Star-Z NOVA A
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