16 / EN
SHOWER READY FUNCTION
For model equipped with user interface type shown in fi gure 9
The product is equipped with an intelligent function to minimise water heating time. Regardless of the
tem perature set by the user, the symbol "
" shower ready will turn on as soon as there is enough
hot water for at
least one shower (40 litres of mixed hot water at 40 °C).
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 o 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
mainte nance 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 o , the anti-Legionella function is deactivated. If the equipment is switched o during
the anti Legionella cycle, the product switches o 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-
fi rmed, the LED (Ref. 4) will fl ash quickly for 4 s.
Permanently deactivate the function by repeating the above steps; once the deactivation is confi rmed,
LED 40°c (Ref. 1) will fl ash quickly for 4 s.
RESET/DIAGNOSTICS
For models equipped with user interface type shown in fi gure 9
When one of the malfunctions described above occurs, the appliance will enter its “fault status” and all
LEDs on the control panel will fl ash simultaneously.
Diagnostics: to enable the diagnostic function, press contemporary ON-OFF button (ref. A) and MINUS
button for 3 sec. The type of fault is indicated by fi ve 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.
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