Ferroli BLUEHELIX HITECH RRT K 50 Instructions For Use, Installation & Maintenance page 301

BLUEHELIX HITECH RRT K 50
Frost protection
In frost protection mode (flow temperature below 5°C) the flame symbol appears.
Anti-legionella
The anti-legionella function is default off (P42 set to "0").
The function is activated with parameter P42.
Values from 1 to 7 defining the number of days between anti-legionella functions.
For example, set value 4 to run the function every 4 days.
When the function is running, the faucet symbol flashes and the hot water tank set point is tem-
porarily brought to 65 °C.
The function ends when the tank reaches the set temperature and holds it for at least 10 minutes,
or it times out after one hour.
When the function ends, the set point returns to the user programmed value.
The function is repeated after the number of days set in parameter P42.
NOTES
• The anti-legionella function continues to work even if the hot water tank is deactivated (ECO
mode).
• The day counter stops if the power supply to the hot water tank is interrupted and restarts when
power is restored.
• For energy conservation reasons, if P42 = 1 the function may start a few hours before the end
of the 24-hour period; likewise for all other values of P42, proportionately.
• After changing the value of P42, the function will be activated within the set number of days
Fault
In case of a fault, the display shows the fault code with different graphics depending on the type.
A-type fault (fig. 5): To unlock the boiler in the presence of this type of fault, press the button
until the message "Confirm?" appears. Then confirm with the button
F-type fault (fig. 4): A fault which will be automatically reset after the problem has been eliminat-
ed.
Message-type fault (fig. 6): The fault does not compromise boiler operation. The message dis-
appears when the problem is eliminated.
F13
fig. 4
EN
A01
fig. 5
cod. 3541Z783 - Rev 00 - 03/2024
.
F12 Alarm
--
°C
21
°C
fig. 6
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