8
ENGLISH
If faults arise in ignition or operations, the boiler performs a “SAFETY STOP”:
the red indicator light showing boiler lockout “
” will light up on the command
panel. The digital monitor indicates the fault code detected (fig. 7a). For the
description of the faults, see the “Light signals and faults” chapter.
Environment Automatic Adjustment System Function (S.A.R.A.) fig. 8a
By setting the heating water temperature selector to the area marked by
AUTO, the S.A.R.A. self-adjusting system is activated (frequency 0.1 sec. on;
0.1 sec. off; duration 0.5): according to the temperature set on the ambient
thermostat and the time employed to reach it, the boiler varies automatically
the heating water temperature reducing the operating time, allowing great
operation comfort and energy saving.
On the control panel, the green LED flashes with a frequency of 0.5 second
ON, 3, 5 seconds OFF.
Reset function
To restore operation, set the function selector to “ ” (fig. 9a), wait 5-6 sec-
onds then bring it to the required position, checking that the red indicator
light is OFF.
At this point the boiler will automatically start and the red lamp switches on
in green.
N.B.
If the attempt to reset the appliance does not activate operation, contact
the Technical Assistance Service.
3A SWITCHING OFF
Temporary switching off
In case of absence for short periods of time, set the mode selector to “ ” OFF
(fig. 9a). Anti-frost device remains active. The monitor appears as in fig. 10a.
Long period switching off
In case of absence for long periods of time, set the mode selector to “ ” OFF
(fig. 9a).
Turn the main system switch OFF.
Turn off the fuel and water taps of the heating and domestic hot water system.
In this case, anti-frost device is deactivated: empty the systems, in case of risk
of frost.
4A CONTROLS
At the beginning of the heating season, and occasionally during use, make
sure the hydrometer-thermohydrometer indicates cold system pressure values
between 0.6 and 1.5 bar: this avoids system noise levels due to the presence
of air. In case of insufficient water circulation, the boiler will switch off. Under
no circumstances, water pressure must be below 0.5 bar (red field).
If this condition is checked, it is necessary to restore water pressure in the
boiler proceeding as follows:
- set the mode selector (2 - fig.1a) to “ ” OFF
- turn on the filling tap (outside the boiler) until the pressure value is between
1 and 1.5 bar.
Carefully close the tap.
Replace the mode selector on the initial position.
If pressure drop is frequent, contact the Technical Assistance Service.
5A LIGHT SIGNALS AND FAULTS
The
control panel has two led that indicate the boiler operating status:
Green led
Flashing
- Flashing with frequency 0.5 second on - 3.5 seconds off = boiler in standby,
there is no flame.
- Flashing with frequency 0.5 second on - 0.5 second off = temporary stop of
the appliance due to the following self-restoring faults:
- water pressure switch (standby time 10 minutes approximately)
- differential air pressure switch (standby time 10 minutes approximately)
- transitory waiting for ignition.
In this phase, the boiler waits for restoration of working conditions. If after standby
time, the boiler will not restore regular operation, stop will be permanent and
light signalling will be red.
- Fast flashing (frequency 0.1 sec. on; 0.1 sec. off; duration 0.5) S.A.R.A.
input/output function (Italian acronym for Environment Automatic Adjustment
System) - Fig. 8a.
By setting the heating water temperature selector to the area marked by AUTO
- temperature value from 55 to 65 °C - the S.A.R.A. self-adjusting system is
activated: the boiler varies the delivery temperature according to the closing
signal of the ambient thermostat.
When the temperature set with the heating water temperature selector is
reached, a 20 minutes count begins. If during this period the ambient thermo-
stat still requests heat, the value of the set temperature automatically increases
by 5 °C.
When the new value is reached, other 20 minutes count begins.
If during this period the ambient thermostat still requests heat, the value of the
set temperature automatically increases by 5 °C.
This new temperature value is the result of the temperature set manually with the
heating water temperature selector and the increase of +10 °C of the S.A.R.A
function
After the second increasing cycle, the temperature value is restored to the value
set by the user and the above mentioned cycle is repeated until the ambient
thermostat request is fulfilled.
Fixed green
If there is a flame, the boiler works regularly.
Red led
If the red LED lights up, this indicates the presence of a fault; the monitor visualises
a code interpreted as follows:
A 01
flame failure (fixed red LED + flame failure icon “
”)
A 02
limit thermostat intervention (blinking red LED)
A 03
differential air pressure switch intervention (fixed red LED)
A 04
water pressure switch after the transitory phase (fixed red LED + filling
icon “
”)
A 07
heating NTC probe (fixed red LED)
To restore operation: faults A 01-02-03
Position the function selector on “ ” OFF, wait for 5-6 seconds, then turn it to
the required position. If the reset attempts do not reactivate the boiler, contact
the Technical Assistance Centre.
Fault A 04
Along with the fault code, the digital monitor visualises the “
” symbol. Check
the pressure value indicated by the hydrometer: if it is less than 0.3 bar, position
the function selector on OFF and adjust the filling tap (outside the boiler) until the
pressure reaches a value between 1 and 1.5 bar. Then turn the function selector
to the required position. If these pressure drops occur frequently, contact the
Technical Assistance Centre.
Fault A 07
Contact the Technical Assistance Centre.
