70
INS
TALLER
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AINTEN
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TECHNI
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Error
Code
Anomaly signalled
Cause
Boiler 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 boiler will run a
post-ventilation cycle. (1)
44
Block for exceeding
gas valve frequent
maximum opening
time
This occurs if the gas valve remains open for longer than
required for normal operation, without the boiler switch-
ing on.
Press the Reset button (1)
45
High T Delta
The boiler 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
module and once the right ΔT is
restored, the boiler resumes regular
operation. Make sure there is water
circulating in the boiler, that the pump
is configured according to system
requirements and that the return
probe works properly (1)
46
Intervention of DIM
v2 safety thermostat
or Low temperature
safety thermostat
outside the boiler
During normal operation, if an anomaly causes excessive
overheating of the flow temperature in low temperature
conditions, the boiler blocks.
In this case, after suitable cooling, it is
possible to reset the thermostat (see
relative instructions sheet) (1)
47
Burner power
limitation
Should flue high temperature be detected, the boiler reduc-
es power supplied so as not to damage it.
(1)
48
System flow probe
anomaly
The board detects an anomaly on the system flow probe
(Optional).
The boiler works with possible system
temperature oscillations (1)
51
RF communication
failure towards CAR
v2 RF
If there is no communication between the boiler and Wire-
less version CAR, an anomaly is signalled. From this mo-
ment, it is only possible to control the system by means of
the control panel of the boiler itself.
Check operation of the Wireless CAR,
check the battery charge (refer to the
relative instructions booklet).
(1) If the shutdown or fault persists, contact an authorised company (e.g. Authorised Service Centre)
(2) The anomaly can only be verified in the list of errors in the “Information” menu
(3) Error displayed only on CAR
V2