10
ENGLISH
Long period switching off
In case of absence for long periods of time, set the mode selector
(3 -
fi
g. 1a) to (OFF).
Then, close the gas tap present on the 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 sys-
tem noise levels due to the presence of air. In case of insuf
fi
cient
water circulation, the boiler will switch off. Under no circumstances,
water pressure must be below 0.5 bar (red
fi
eld).
If this condition is checked, it is necessary to restore water pres-
sure in the boiler proceeding as follows:
- set the mode selector (3 -
fi
g.1a) to
(OFF)
- turn on the
fi
lling tap (L
fi
g. 13) until the pressure value is be-
tween 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 Assis-
tance Service.
5A LIGHT SIGNALS AND FAULTS
The operating status of the boiler is shown on the digital display,
below is a list of the types of displays.
BOILER STATUS
DISPLAY
Stand-by
-
OFF status
OFF
ACF module lockout alarm
A01
ACF electrical fault alarm
A01
Limit thermostat alarm
A02
Air pressure switch alarm (C.S.I. models)
Fumes thermostat (C.A.I. models)
A03
H2O pressure switch alarm
A04
NTC domestic water fault
A06
NTC heating fault
A07
Parasite
fl
ame
A11
Electric calibration min and max heating
ADJ
Transient awaiting ignition
88
°C
fl
ashing
Air pressure switch intervention (C.S.I. models)
Fumes thermostat intervention (C.A.I. models)
fl
ashing
H2O pressure switch intervention
fl
ashing
External probe present
Domestic water heat request
60
°C
Heating heat request
80
°C
Anti-freeze heat request
Flame present
To restore operation (deactivate alarms):
Faults A 01-02-03
Position the function selector to
(OFF), wait 5-6 seconds then
set it to the required position
(summer mode) or
(winter
mode). If the reset attempts do not reactivate the boiler, contact the
Technical Assistance Centre.
Fault A 04
In addition to the fault code, the digital display shows the symbol .
Check the pressure value indicated by the water gauge:
if it is less than 0.3 bar, position the function selector to (OFF)
and adjust the
fi
lling tap (L
fi
g. 13) until the pressure reaches a
value between 1 and 1.5 bar.
Then position the mode selector to the desired position
(sum-
mer) or
(winter).
If pressure drops are frequent, request the intervention of the
Technical Assistance Service.
Fault A 06
The boiler operates normally but cannot reliably maintain a con-
stant domestic hot water temperature, which remains set at around
50°C. Contact the Technical Assistance Centre.
Fault A 07
Contact the Technical Assistance Centre.
