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Error
Code
Anomaly signalled
Cause
IU Status / Solution
43
Block due to loss of
flame signal
This occurs if the ''Flame signal loss'' error occurs many times
in a row within a preset period (38).
Press the Reset button, before restarting,
the system will run a post-ventilation
cycle. (1)
45
High ΔT
The system detects a sudden, unexpected increase in the
ΔT between the flow probe and the system return probe.
The power of the burner is limited to
prevent damage to the condensation mo-
dule and once the right ΔT is restored, the
system resumes regular operation. Make
sure there is water circulating in the system
, that the pump is configured according to
system requirements and that the return
probe works properly. (1) (2)
47
Burner power limitation
Should flue high temperature be detected, the system reduces
power supplied so as not to damage it.
(1)
60
Anomaly pump blocked
The pump is stopped due to one of the following causes:
Impeller blocked, electrical fault.
Try to unblock the pump as described in
the relative section. If normal conditions
are restored, the system restarts without
having to be reset (1)
61
Air in circulator pump
Air is detected inside the pump; the pump cannot work.
Vent the pump and the central heating
circuit. If normal conditions are restored,
the system restarts without having to be
reset (1)
70
Return/flow probe
exchange
In case of an incorrect system wiring connection the error is
detected
The system does not start (1)
75
Return and/or flow
probe malfunction
Possible failure of one or both system return and flow probes
The system does not start (1)
76
Return and/or flow
probes temperature drift
A malfunction of one or both system return and flow probes is
detected
The system does not start (1)
(1) If the block or anomaly persists, contact an authorised company (e.g. Authorised After-Sales Centre).
(2) The anomaly can only be verified in the list of errors in the “Information” menu
