BoilerFaultCodesYour boiler's internal computer brain has detected a serious electronic failure and can no longer control the heating software correctly.
Book a Gas Safe engineer within 24–48 hours. Your boiler may be unsafe or could break down completely if left.
Technical description: Printed circuit board (PCB) AGC01 error
What causes this fault?
This fault occurs when the boiler's main control board suffers a critical electronic failure, often caused by a power surge or localized component burnout. The most common reason is simply the natural degradation of the electrical circuits over time, which prevents the computer from executing the software needed to fire the boiler safely.
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 →Protect yourself from future repair bills
A boiler cover plan would cover faults like A61 — no call-out fees, no surprises.
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Ferroli Bluehelix Tech is discontinued — time for a new one?
Parts for discontinued models can be hard to find and expensive. A new A-rated boiler could save you money on both repairs and energy bills.
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