27
The following conditions may occur
when operating:
If there is no heat request, the boiler
will go into standby,
If there is a heat request, the boiler
starts and the flame comes on, while
the signal light is green and fixed (A).
The display will show the temperature
in the boiler or the domestic hot wa-
ter temperature depending on the re-
quest in progress.
For the IS models the temperature in
the boiler is always displayed.
The boiler will continue operating until
the set temperatures are reached, af-
ter which it will go into standby, in any
event maintaining the temperature
displayed.
If there are any firing or operation
faults, the boiler will make a “safety
stop”; on the control panel the green
led will go out, the display will show a
flashing fault code and, in the event
of a lockout also the red led (B) will
come on.
To identify the fault code and to reset
the boiler, see the chapter “Display
and fault codes”.
After a “safety stop”, wait about
10 seconds before restoring the
start-up conditions.
A green led signal
boiler status
B red led
fault in progress
Operation
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