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Boiler Shutdown
The boiler is equipped with safety devices which intervene in
certain situations to shutdown the boiler. Some of these situa-
tions are signalled by the boiler and can be corrected by the
user.
Shutdown Due to Ignition Failure
T
his anomaly is indicated by
A01”
o
n the display. To reset the
boiler, press and then release the reset button .
At this point, the electronic ignition system will attempt to light the
burner again.
S
hould the boiler fail to ignite a second time, check that the
external gas cock is open. If the problem persists, contact an
Authorised Service Centre.
S
hutdown Due to Overheating
This anomaly is indicated by “A 03” on the display. The boiler has
shutdown because the safety thermostat detected that the boiler
temperature has exceeded the maximum limit.
To reset this state, wait until the boiler has cooled and press
the button.
If the safety thermostat operates on a frequent basis, contact an
Authorised Service Centre.
Shutdown Due to Insufficient Water Circulation
This anomaly is indicated by “A 02” on the display.
One of the possible causes of this shutdown situation could be the
lack of water in the boiler or water circulation failure in the primary
heating circuit.
Check the system pressure on the pressure gauge
“F” and, if it is
less than 0.5 bar, try bringing the system pressure up to a mean
value of 1.0 bar by opening the water inlet valve (see page 4 for
further instructions). Then reset by pressing the button
.
Other Shutdown Situations
Should a shutdown situation indicated on the left display by the
letter E (E 04, E 05, E06, .....etc. ), contact an Authorised Service
Centre.
If instead the display shows one of the shutdown situations indi-
cated by the following letters and figures, A 07, A 33, A 97, A 98,
A 99, try resetting the boiler by pressing the reset button . If
the boiler shuts off again, contact an Authorised Service Centre.
Anti-frost device
The boiler is fitted with a device which, in the event that the water
temperature falls below 8
˚C the pump activates and runs until a
temperature of 18˚C is attained. In the event that the water tem
-
perature falls below
3
˚C, the diverter valve switches to Domestic
Hot W
ater and the burner fires and runs on minimum power until
a temperature of 33˚C is attained.
This device is only activated when the boiler is operating perfect-
ly and:
- the system pressure is suf
ficient;
- the boiler is powered electrically;
- gas is being distributed.
IMPORTANT!
DUE
T
O THE
HIGH EFFICIENCY
NA
TURE OF THE APPLIANCE
, TJE
FLUE
WILL
PRODUCE PLUMES OF CONDENSED WATER VAPOUR
, THIS IS NORMAL OPER-
ATION FOR A CONDENSING BOILER.
4. USEFUL INFORMATION
8


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