Faults
Installation and operating instructions Wilo-Star-Z NOVA T 23
English
Replacing the motor head Page 15.
Order the service motor from a specialist retailer.
8Faults
NOTICE: When the motor is removed and
running, noises and a change in rotation may
occur.
This is normal for this situation.
Faultless function can only be guaranteed when
the pump is operated in fluid.
Faults, displays Causes Remedy
Time not set. Set the time.
(time flashes)
Power failure for longer
than 12 hours.
Set the time, or establish a
secure power supply.
Electronics fault, module
defective.
Get the motor head
replaced by a technician
Page 15.
Temperature sensor
defective.
Get the motor head
replaced by a technician
Page 15.
Non DVGW-compliant
setting of the tempera-
ture control.
Set the temperature
above 55 °C.
Non DVGW-compliant
switch-off time.
Set the daily switch-off
time to less than 8 hours.
No display.
Power supply interrupted. Re-establish the power
supply.
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