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Faults
Display shows a
current temperature
which is much higher
than the set minimum
temperature
Pump is not
maintaining the set
minimum flow
Pump not
detecting thermal
disinfection
34
Causes
The temperature on the
heat generator is too high
compared to the set minimum
temperature on the pump
The set minimum flow has
priority over the set minimum
temperature and is preventing
the pump from running more
slowly
The piping is partially or
completely blocked
Piping is undersized
Taps opened
Cold water flowing into the
circulation pipe
The pump's selflearning phase
(24 hours of uninterrupted
operation) was not observed
Remedy
Adjust the settings of the heat
generator and pump to match
Check the set minimum flow
Open valves in the piping
Change piping design
Close taps and check if the pump
reaches the minimum flow then
Install non-return valves
Activate thermal disinfection and
observe the self-learning phase
02/2015
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