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Error
Anomaly signalled
Code
Loss of remote control
31
communication
Low power supply
37
voltage
38
Loss of flame signal
Block due to loss of
43
flame signal
45
ΔT high
(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
78
Cause
This occurs if an incompatible remote control is connected,
or if communication between the boiler and the remote
control is lost.
This occurs when the power supply voltage is lower than the
allowed limits for the correct boiler operation.
This occurs when the boiler is ignited correctly and the
burner flame switches off unexpectedly; a new attempt at
ignition is performed and if normal conditions are re-
stored, the boiler does not have to be reset.
This occurs if the ''Flame signal loss'' error occurs many
times in a row within a preset period (38).
The boiler detects a sudden, unexpected increase in the ΔT
between the flow probe and the system return probe.
Boiler status / Solution
Disconnect and reconnect the power
to the boiler. If the Remote Control is
still not detected on re-starting, the
boiler will switch to local operating
mode, i.e. using the controls on the
control panel. In this case the "Central
Heating" (1) function cannot be
activated.
If normal conditions are restored the
boiler restarts without having to be
reset (1).
If normal conditions are restored the
boiler restarts without having to be
reset (1) (2).
Press the Reset button, before
restarting, the boiler will run a
post-ventilation cycle (1).
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).
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