Switching off
Switching off for short periods
For brief absences press the
will show two segments in the central area (Fig. 12). When the boiler remains
powered with the gas tap open, it is protected by the following systems:
- anti-freeze: when the temperature of the water in the boiler falls below safety
values, the circulator and the burner work at minimum power to increase
the water temperature to a safe value (35°C). The
the display.
- circulator anti-block: one operating cycle is performed every 24 hours.
Switching off for long periods
For prolonged absences press the
3). The display will show two segments in the central area. Turn the main
switch to "off".
Turn off the gas tap under the boiler by turning it clockwise (Fig. 13).
In this case, the anti-freeze and anti-block systems are disabled.
the water circuit or suitably protect it with a good make of anti-freeze.
Boiler functions
Filling the circuit
If circuit pressure reaches 0.6 bar, the pressure value fl ashes on the display
(Fig. 14); if it falls below a minimum safety value (0.3 bar), fault code 41
appears on the display (Fig. 15) for a certain time, following which, if the
fault persists, fault code 40 is displayed (see chapter on "Troubleshooting").
In the event of faul 40 (Fig. 16) proceed as follow to restore the correct
pressure value:
- press
button
- open the fi lling tap external to the boiler, until the pressure shown in the
display is between 1 and 1,5 bar.
If you have to fi ll the system several times, contact the Technical Service
Centre to check whether the heating circuit is watertight (see if there are
any leaks).
Information
Press , the display turns off and just the word InFO appears (Fig. 17). Press
the button
to view operating information. Press the button again to move
on to the next piece of information. If the
automatically exits the function.
Info list:
Info 0 - shows the word InFO (Fig. 17)
Info 1 - only with the external probe connected, displays external temperature
(e.g. 12°C) (Fig. 18). The values shown on the display range between - 30°C
and 35°C. Beyond these values the display shows "- -"
Info 2 - shows circuit pressure (Fig. 19)
Info 3 - shows the set heating temperature (Fig. 20)
Info 4 - shows the setted temperature (only water tank with sensor, Fig. 21)
Info 5 - displays the set heating temperature, in reference to the second
circuit, only if it is connected.
NF2
It is possible to display information, which may be useful for the Technical
Assistance Centre, by pressing the button
appears on the display.
INF2 list
Step
Description
1
Input probe temperature
2
Return probe temperature
3
Sanitary probe temperature:
water tank with thermostat (A and B cases)
water tank with probe (C case)
4
Not used in this model
5
Fumes probe temperature
6
Second heating system probe temperature
7
Not used in this model
8
Ventilator speed /100
9
Not used in this model
10
Not used in this model
11
Exchanger cleaning counter status
12-19
Historic alarm codes
(**): if the display also shows the dot (.), the temperature of the fumes probe is 100+displayed value
button to switch off the boiler. The display
symbol lights up on
button to switch off the boiler (Fig.
button is not pressed, the system
for 10 seconds: the code "INF2"
S.A.R.A. function (Fig. 22)
If the "winter" mode is selected, the S.A.R.A. function is activated for the
heating circuit. This function allows to reach the required ambient tempe-
rature more quickly.
Depending on the temperature set on the ambient thermostat and the time
taken to reach it, the boiler automatically adjusts the heating water tem-
perature to reduce operating times, thereby increasing operating comfort
and energy saving.
.
.
Empty
.
Display 2 digits
xx
xx
--
xx
xx
xx(**)
xx
xx
xx
xx
xx
bH
xx
ENGLISH
Display 4 digits
01
°C
02
°C
03
°C
03
°C
Cond
°C
05
06
°C
07
FAN
09
10
xxxx
HIS0-HIS7
19