High
E03 on Ferroli Domina 102

Your boiler has stopped working because it cannot safely clear its exhaust gases, preventing it from lighting to keep your home safe.

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

Air pressure switch failure: Check flue/terminal for blockages, fan operation, and pressure switch connections/tubing

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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