BoilerFaultCodesFerroli A61 Fault Code
The Ferroli A61 fault code means: your boiler's main internal computer has developed a technical fault and can no longer communicate with the rest of the system.. It appears on 4 Ferroli models in our database.
Technical description: Controller ABM03B error – controller has an internal error
What causes the Ferroli A61 fault?
This fault occurs when the boiler's central control board suffers a hardware failure, meaning it can no longer send or receive instructions to vital components like the pump or gas valve. The most common reason is that the delicate electrical circuits on the main PCB have burnt out or degraded, often due to age or an unexpected electrical surge.
Engineer required
This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
Find a Gas Safe engineer
Search the official register for a qualified engineer in your area.
Gas Safe Register →Avoid the next call-out bill
A cover plan would handle faults like A61: no call-out fees, no surprise bills.
Affiliate links. We may earn a commission at no extra cost to you.
Ferroli models that show the A61 fault code
Click a model for the full fault code list and model-specific repair notes.
Source
Ferroli A61 fault code information on this page is sourced and cross-checked against the official Ferroli service / installation manuals for each affected model.
Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 31 August 2026