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respective at maximum (Hi) and at mini-
mum (Lo) power . From that moment, the
boiler will start working in heating mode at
1
3
maximum power, with cut off at 80°C and
re-ignition at 70°C .
Before activating the chimney sweep fun-
ction make sure that the radiator valves or
eventual zone valves are open .
The test can also be carried out with the
4
boiler working in D .H .W . mode .
For this, after activating the chimney sweep
function, open one or more hot water fau-
cets . Under these conditions, the boiler
will function at maximum power with the
D .H .W . kept at between 60°C and 50°C .
During the test, the hot water faucets must
remain open .
1
3
For exit to the chimney
sweep function press the key () of the con-
trol panel .
The chimney sweep function will automa-
tically switch off after 15 minutes from the
activation .
4 .5
FUNCTIONING ANOMALIES
4
When there is a functioning anomaly, an
alarm appears on the display and switch on
1
the red led .
Descriptions of the anomalies with relative
alarms and solutions are given below:
– FUMES DISCHARGE ANOMALY ALARM 01
(fig . 24)
OPEN BOILER (OF):
The display shows "AL 01" .
The fumes thermostat has intervened .
The boiler stops for an enforced period of
10 minutes .
At the end of this period, the boiler re-at-
tempts ignition .
maly is repeated three times in 24 hours,
the boiler blocks .
Press the key of the controls to start up
the boiler again .
SEALED BOILER (BF):
The fumes thermostat has intervened . If
the condition causing the problem persi-
2
sts for two minutes, the boiler stops for
an enforced period of thirty minutes .
At the end of this period, the boiler re-at-
2
tempts ignition .
– LOW
WATER
ALARM 02 (fig . 24/a)
If the pressure detected by the water
pressure valve is lower than 0 .5 bar, the
boiler stops and the display shows the
alarm "AL 02" .
Bring the pressure back to normal by me-
ans by acting on the telescopic loading
knob .
Lower the knob and turn it anti-clockwi-
se to open until the pressure indicated on
the hydrometer reaches 1 - 1 .2 bar .
2
WHEN FILLING HAS BEEN COMPLE-
TED, CLOSE THE KNOB BY TURNING IT
CLOCKWISE .
If the load procedure has to be repeated
2
3
4
If the ano-
several times, it is advisable to check that
the seal of the heating circuit is intact
(check that there are no leaks) .
– D .H .W . SENSOR ANOMALY ALARM 04
If the D .H .W . sensor (SS) is open or short
circuited, the boiler will function only in
heating (C .H .) . The display will show the
alarm "AL 04" .
– HEATING SENSOR ANOMALY ALARM 05
If one or both sensing elements of hea-
2
bar
1
3
ting sensor (SM1/SM2) are open or short
circuited, the boiler will not function and
0
4
the display will show the alarm "AL 05" .
– FLAME BLOCK ALARM 06 (fig . 24/b)
If the flame control has not detected the
presence of the flame after a complete
ignition sequence, or for any other rea-
son the card cannot "see" the flame, the
Fig . 24
PRESSURE
ANOMALY
– SAFETY THERMOSTAT ANOMALY ALARM
OPEN
Apre
Fig . 24/a
– PARASITE FLAME ANOMALY ALARM 08
1
3
– AUXILIARY SENSOR ANOMALY ALARM 10
4
– MODULATOR ANOMALY ALARM 11
boiler will stop and
the display will show
1
Fig . 24/b
the alarm "AL 06" .
Press the key () of the controls to start up
the boiler again .
07 (fig . 24/c)
If the C .H . sensor (SM1/SM2) exceeds the
100°C the boiler does not ignite the bur-
ner, the display show AL 07 and remains
ignited the green led . If this condition
restored more one minute, the boiler
will stop, the display
show
always
Fig . 24/c
anomaly AL 07 and switch on the red led .
Press the key () of the controls to start up
the boiler again .
If the flame control section recognises
the presence of flames also in phases
when they should not be present, it me-
ans there is a breakdown in the flame de-
tection circuit; the boiler will stop and the
2
display will show anomaly "AL 08" .
ONLY FOR BOILER WITH SOLAR PLANT
COUPLING (PAR 2 = 2 or 4):
D .H .W . inlet probe anomaly . When the
probe is open or short circuited the boiler
looses the solar function and the display
shows anomaly AL 10 .
The modulator is not connected .
When during functioning the boiler de-
tects zero current to the modulator, the
display will show anomaly "AL 11" .
IT
ES
ENG
2
3
4
the
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