Wilo Star-Z NOVA T, Installation And Operating Instructions Manual

Page: 24 / 338

Faults
24 WILO SE 09/2019
Engl
ish
Additional display
symbols are
shown. Frequency overlap when
operating in an industrial
environment or in the
proximity of radio
transmitters. This fault has no effect on
the function of the pump.
Pump does not
start. Power supply cable break,
short-circuit or defective
fuses. Have the power supply
checked by a qualified
electrician.
The time switching func -
tion has switched off
automatically.
Check the time switching
function setting

Page 20.
Motor is blocked, e.g. by
deposits from the water
mains. Get the pump removed by
a qualified technician
 Page 15.
Ensure that the impeller
can move freely again by
turning it and rinsing out
the dirt that has accumu
-
lated.
The pump makes
noises. Motor scraping, e.g.
caused by deposits from
the water mains.
Running dry, too little
water. Check the shut-off
devices, they must be
fully open.
Air in the pump. Switch the pump on/off
5 x for 30 s at a time.
Faults, displays Causes Remedy
NOTICE: If you cannot rectify the fault,
contact a specialist technician.