Wilo Para.../SC serie Einbau- Und Betriebsanleitung Seite 50

10.1
LED Faults
Blocking
Lights
Contacting/
up red
winding
Under/overvoltage
Flashes Excessive
red module
temperature
Short-circuit
Generator
operation
Dry run
Flashes
Overload
red/
green
50
Fault signals
• The fault signal LED indicates a fault.
• The pump switches off (depending on the fault) and
attempts a cyclical restart.
Causes
Rotor blocked
Winding defective
Power supply too
low/high on mains
side
Module interior too
warm
Motor current too
high
Water is flowing
through the pump
hydraulics, but there
is no mains voltage at
the pump
Air in the pump
Sluggish motor,
pump is operated
outside of its specifi-
cations (e.g. high
module tempera-
ture). The speed is
lower than during
normal operation
Remedy
Activate manual
restart or contact
customer service
Check mains
voltage and
operating
conditions, and
request customer
service
Check the mains
voltage, water
quantity/pressure
and the ambient
conditions
Wilo SE 02/2018