BlueHelix HiTech RRT C
45
EN
cod. 3541V691 - Rev. 00 - 04/2022
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.
fig. 59
fig. 60
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 ac-
cess it, see fig. 31.
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 operation, just hold down the
button until
the
message
“Confirm?”
appears and confirm with the button
, 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 reset as soon as the va-
lue returns within the boiler's normal working range.
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