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.

What the manual says

Manufacturer manual

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

From this model's manual
Verified against the Ferroli Domina 102 installation & service manual.
Plain-English guidance below. Severity, DIY steps, costs and parts are our interpretation to help you act, not text from the manual.

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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