User manual
9
Shutdown Due to Ignition Failure
This anomaly is indicated by “
A01” on 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.
Should 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.
Shutdown Due to Overheating
This anomaly is indicated by “A 03” on the display. The boiler has
shutdown because the saf
ety 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 shutdo
wn 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, tr
y bringing the system pressure up to a mean
value of 1.0 bar by opening the water inlet valve (see page 6 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.) occur, contact an A
uthorised
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 anti-frost function acts on the central heating flow tempera-
ture probe, independently from other regulations
, when the elec-
trical supply is turned on.
If the primary circuit temperature falls below 8°C the pump will run
for 2 minutes.
After the two minutes of circulation (fixed) the boiler will check the
following:
a) if the central heating flow temperature is > 8°C, the pump stops;
b) if the central heating flow temperature is between 3 and 8°C,
the pump will run for another two minutes;
c) if the central heating flow temperature is < 3°C, the burner will
fire (heating position) at minimum power until the temperature
reaches 33°C, the burner will go out and the pump will continue to
run for two minutes.
If the flow temperature remains between 3-8°C the pump will con-
tinue to run for two minutes for a maximum of 10 times unless a
temperature above 8°C is detected in the central heating flow,
after this the the burner will fire.
If lockout is caused by overheat the burner is kept OFF.
N
OTE: In all cases, the circulation takes place in the central
heating system.
The anti-frost device activates only when (with the boiler oper-
ating correctly):
- the system pressure is correct;
- the boiler is electrically powered;
- there is a supply of gas.
IMPORTANT!
D
UE TO THE HIGH EFFICIENCY NATURE OF THE APPLIANCE, THE FLUE WILL
PRODUCE PLUMES OF CONDENSED WATER VAPOUR
, THIS IS NORMAL OPER-
ATION FOR A CONDENSING BOILER.
4. USEFUL INFORMATION
Unit 3A, Thornton Road Ind. Estate Off Hockney Road Bradford, BD8 9HQ
01274 488 388
www.heatingspares247.com
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