Ferroli BlueHelix HiTech RRT 24 C Instrucciones De Uso, Instalación Y Mantenimiento página 374

Water inlet filter cleaning
• Disconnect the power supply and close the gas cock ahead of the valve.
• Isolate the boiler by operating the DHW inlet and system shut-off valves.
• Clean the water inlet filter.
3.4 Troubleshooting
Diagnostics
LCD display Off
If, even after touching the buttons, the display does not come on, check that the card is electrically
powered. Using a digital multimeter, check for presence of power.
In case of no voltage, check the wiring.
If the voltage is sufficient ( Range 195 – 253 Vac), check the fuse (3.15AL@230VAC). The fuse
is on the card. To access it, see fig. 29.
LCD display On
In case of operation problems or faults, the display shows the fault identification code.
There are faults that cause permanent shutdowns (indicated with the letter "A"): to restore opera-
tion, just hold down the button
ton , or use the RESET of the remote timer control (optional) if installed. If the boiler does not
restart, the fault must be eliminated.
Other faults cause temporary shutdowns (indicated with the letter "F") which are automatically re-
set as soon as the value returns within the boiler's normal working range.
374
BlueHelix HiTech RRT C
fig. 70
fig. 71
until the message "Confirm?" appears and confirm with the but-
cod. 3541V304 - Rev. 00 - 03/2024
EN