46 Wilo SE 06/2020
en
10.1 Fault signals
• The fault signal LED indicates a fault.
• The pump switches off (depending on the fault) and
attempts a cyclical restart.
LED Faults Causes Remedy
Lights
up red
Blocking Rotor blocked Activate manual
restart or contact
customer service
Contacting/
winding
Winding defective
Flashes
red
Under/overvolt
-
age
Power supply too low/
high on mains side
Check mains volt
-
age and operating
conditions, and
request customer
service
Excessive mod
-
ule temperature
Module interior too
warm
Short-circuit Motor current too high
Flashes
red/
green
Generator
operation
Water is flowing
through the pump
hydraulics, but there is
no mains voltage at the
pump
Check the mains
voltage, water
quantity/pressure
and the ambient
conditions
Dry run Air in the pump
Overload Sluggish motor, pump is
operated outside of its
specifications (e.g. high
module temperature).
The speed is lower than
during normal operation
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