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4.4. 1
Chimney sweep function
ENG
To check boiler combustion, press at the
IT
same time the installer's key (
a few seconds. The chimney sweep function
will switch on and will continue for 15 minu-
ES
tes. During the 15 minutes functioning of
chimney sweep function, pressing the keys
(
and
) take the boiler respective at
maximum (Hi) and at minimum (Lo) power.
From that moment, the boiler will start
working in heating mode at maximum
power, with cut off at 80°C and re-ignition
at 70°C. Before activating the chimney
sweep function make sure that the radia-
tor valves or eventual zone valves are
open. The test can also be carried out with
the boiler working in D.H.W. mode. For this,
after activating the chimney sweep func-
tion, open one or more hot water taps.
Under these conditions, the boiler will func-
tion at maximum power with the D.H.W.
kept at between 60°C and 50°C.
During the test, the hot water taps must
remain open.
To exit to the chimney sweep function press
the key
of the control panel.
The chimney sweep function will automa-
tically switch off after 15 minutes from
the activation.
4.5
FUNCTIONING ERRORS
When there is a functioning error, an alarm
appears on the display and switch on the
red led.
Descriptions of the errors with relative
alarms and solutions are given below:
– FUMES DISCHARGE ERROR
ALARM 01 (fig. 20)
The fumes thermostat has intervened. If
the condition causing the problem persi-
sts for two minutes, the boiler stops for
an enforced period of thirty minutes.
At the end of this period, the boiler re-
attempts ignition.
– LOW WATER PRESSURE ERROR
ALARM 02
If the pressure detected by the water
pressure valve is lower than 0.5 bar, the
boiler stops and the display shows the
24
alarm "AL 02". Bring the pressure back
to normal, until the pressure indicated
on the hydrometer reaches 1 - 1.2 bar.
&
) for
If the load procedure has to be repeated
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 ERROR
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 ERROR
ALARM 05
If one or both sensing elements of heating
sensor (SM1/SM2) are open or short cir-
cuited, the boiler will not function and the
display will show the alarm "AL 05".
– FLAME LOCKOUT
ALARM 06 (fig. 20/a)
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
boiler will stop and the display will show
the alarm "AL 06".
Press the key
up the boiler again.
– SAFETY THERMOSTAT ERROR
ALARM 07 (fig. 20/b)
If the C.H. sensor (SM1/SM2) exceeds
the 100°C the boiler does not ignite the
burner, the display show AL 07 and
remains ignited the green led.
If this condition restored more one minu-
te, the boiler will stop, the display show
always the anomaly AL 07 and switch on
the red led.
Press the key
up the boiler again.
Fig. 20
– FLAME DETECTION ERROR
ALARM 08
If the flame control section recognises
the presence of flames also in phases
when they should not be present, it
means there is a breakdown in the flame
detection circuit; the boiler will stop and
the display will show anomaly "AL 08".
– AUXILIARY SENSOR ERROR
– MODULATOR ERROR
of the controls to start
– CONFIGURATION ERROR
– HEATING SENSOR
Fig. 20/a
of the controls to start
– SENSOR ALIGNMENT
ALARM 10
Should this error occur , confirm that
PAR 2 is set to the correct value.
ALARM 11
The modulator is not connected.
When during functioning the boiler
detects zero current to the modulator,
the display will show error "AL 11".
The boiler will function at minimum
power and the error will be de-activa-
ted when the modulator is reconnected
or when the burner stops working.
ALARM 12
Anomaly in the SEALED/OPEN configu-
ration. There may be a conflict between
the values set by the installer for PAR 1
and the self-detection carried out by the
card causes the activation of the alarm:
the boiler will not function and the display
will show error "AL 12". Reset PAR 1 to
de-activate the alarm or check the pres-
sure switch/combustion product ther-
mostat and relative connection.
POSITIONING ERROR SM1/SM2
"AL 16"
If the probe does not detect a tempera-
ture increase after burner ignition, the
burner switches off after 10 seconds,
the display shows anomaly AL 16 eand
the4 green LED stays on.
If the anomaly occurs three times within
24h lthe boiler blocks, the display conti-
nues to show anomaly AL 16 and the red
LED switches on.
Press
on the control panel to re-
start the boiler.
ERROR "AL 17"
When the two sensitive elements of the
heating probe (SM1/SM2) dif fer to
each other by more than 16°C the boiler
does not function and the display shows
error AL 17.
Replace the heating probe (SM1/SM2)
to restore boiler operation.
Fig. 20/b
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