38
WILO SE 04/2017
English
Display shows a
current temper-
ature which is
much higher
than the set
minimum tem-
perature
The temperature
on the heat gener-
ator is too high
compared to the
set minimum tem-
perature on the
pump.
Adjust the settings of the heat
generator and pump to match
The set minimum
flow has priority
over the set mini-
mum temperature
and is preventing
the pump from
running more
slowly
Check the set minimum flow
Pump is not
maintaining the
set minimum
flow
The piping is par-
tially or completely
blocked
Open valves in the piping
Piping is under-
sized
Change piping design
Taps opened Close taps and check if the pump
reaches the minimum flow then
Cold water flowing
into the circulation
pipe
Install non-return valves
Pump not
detecting ther-
mal disinfection
The pump's self-
learning phase
(24 hours of
uninterrupted
operation) was
not observed
Activate thermal disinfection and
observe the self-learning phase
Faults Causes Remedy
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