Anti-Freeze Function - Ariston VELIS 30 Instructions Pour L'installation, L'emploi, L'entretien

which will light up. In this mode, the manual selection of the temperature is possible, however changing
iidisables the "ECO EVO" function. Reactivate it by pressing the "ECO" button.
Whenever the "ECO EVO" function or the product is turned off and on again, the function will continue
to le arn the levels of consumption. In order to guarantee proper operation of the program, it is recom-
mended not to disconnect the appliance from the mains. An internal memory ensures data storage for
up to four hours wi thout electricity, after which all acquired data is cancelled and the learning process
will begin from the start. To voluntarily cancel the acquired data, hold down the "ECO" button for more
than 5 seconds. When the reset process is completed, "ECO" flashes quickly to confirm data cancellation

ANTI-FREEZE FUNCTION

The anti-freeze function is the appliances automatic protection to avoid damages caused by very low
tempe ratures below 5 °C, in the event in which the product is turned off during winter. It is recommended
that the product remains plugged in to the mains power, even if is inactive for a long time.
THERMAL DISINFECTION FUNCTION (Anti-Legionella)
The Anti-Legionella function is activated by default. It consists of a water heating/60°C temperature
maintenance cycle for 1 hour which has a thermal disinfection action on the relative bacteria.
The cycle starts when the product is started up and when it is restarted after a power outage. If the
product always functions at temperatures lower than 55°C, the cycle is repeated after 30 days. When the
product is switched off, the anti-Legionella function is deactivated. If the equipment is switched off during
the anti Legionella cycle, the product switches off and the function is deactivated. At the end of the cycle,
the use temperature returns to the temperature previously set by the user.
The activation of the anti-legionella cycle appears as a normal temperature adjustment 60°C. Activate
this function by pressing and holding both the "ECO" and "+" buttons for 4 s.; once activation is con-
firmed, the LED (Ref. 4) will flash quickly for 4 s.
Permanently deactivate the function by repeating the above steps; once the deactivation is confirmed,
LED 40°c (Ref. 1) will flash quickly for 4 s.
RESET/DIAGNOSTICS
For models equipped with user interface type shown in figure 8
When one of the malfunctions described above occurs, the appliance will enter its "fault status" and all
LEDs on the control panel will flash simultaneously.
Diagnostics: to enable the diagnostic function, press contemporary ON/OFF " " button (ref. A) and
"-"button for 3 sec. The type of fault is indicated by five LEDs (Ref. 1-5) according to the following scheme:
LED Ref. 1 - internal malfunction of the circuit board
LED Ref. 1 and 3 - internal malfunction of the circuit board (NFC communication or NFC data)
LED Ref. 3 - broken temperature probes (open or short circuited) - boiler outlet
LED Ref. 5 - excessive water temperature detected by single sensor - boiler outlet
LED Ref. 4 and 5 - general excessive water temperature (circuit board fault) - boiler outlet
LED Ref. 3 and 4 - Failure to heat water with powered heating element - boiler outlet
LED Ref. 3, 4 and 5 - overheating caused by lack of water - boiler outlet
LED Ref. 2 and 3 - broken temperature probes (open or short circuited) - boiler inlet
LED Ref. 2 and 5 - excessive water temperature detected by single sensor - boiler inlet
LED Ref. 2, 4 and 5 - general excessive water temperature (circuit board fault) - boiler inlet
LED Ref. 2, 3 and 4 - failure to heat water with powered heating element - boiler inlet
LED Ref. 2, 3, 4 and 5 - overheating caused by lack of water - boiler inlet
Exit the diagnostic function by pressing the ON/OFF button (Ref. A) or wait for 25 seconds.
31 / EN