High
A54 – A55 – A63 on Ferroli iBoiler 28

Your boiler’s internal control computer has developed a technical error and can no longer communicate with the rest of the unit, causing the system to shut down.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed

Call an engineer soon

Book a Gas Safe engineer within 24 to 48 hours. Your boiler may be unsafe or could break down completely if left.

Technical description

Printed circuit board (PCB) AGC01 fault

Engineer required

This is a high severity fault. Stop using the boiler and call a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.

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Related fault codes

A01View →F05View →F50View →

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