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3.5 Troubleshooting
Diagnostics
The boiler features an advanced self-diagnostic system. In the case of an fault in operation, the display flashes
and the code identifying the fault appears. The faults marked with the letter "A" cause the permanent shut-
down of the boiler. To reset operation the boiler must be restarted manually, pressing the "R" (reset) button.
The faults marked by the letter "F" cause temporary shut-down and are reset automatically as soon as the
value returns within the boiler's normal operating range.
The following table lists a number of indications for resolving the faults signalled by the boiler. Interventions
on the appliance must be effected only by Qualified Personnel, such as the personnel from the FERROLI
Customer Technical Service Centre. For any operations on the appliance or which require the opening of the
boiler, always request the assistance of the service centre.
Fault
Failed burner
assembly ignition
Safety thermostat
activation
Flue safety device
intervention
No flame following the
ignition phase
Insufficient water system
pressure
Fan fault
36
Possible cause
• No gas
• Ignition or detection
electrode fault
• Defective gas valve
• Outlet sensor not active
• No system circulation
• Flue partially blocked
or insufficient
• Air/flue pipes blocked
• System empty
• Fan not powered
• Defective fan
ARENA 30 A
Solution
• Check that the gas flow to the boiler
is correct and that air has been
eliminated from the piping
• Check the wiring to the electrodes
and that these are positioned
correctly and free of deposits
• Check and replace the gas valve
• Check the correct positioning and
operation of the outlet sensor
• Check the pump
• Check the efficiency of the flue,
the flue gas exhaust pipes and
the outlet terminal
• Free the obstructions from the
flue, flue gas exhaust and air inlet
pipes and terminals
• Fill the system
• Check the wiring to
the fan
• Replace the fan
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