High
OPTIMAX HE PLUS 38C on Ferroli iBoiler 24

Your boiler has failed to ignite, meaning it cannot light the gas to provide heating or hot water.

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

A01

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

A02View →A03View →F04View →

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