High
Red LED Out (Lockout) on Ferroli DOMINAplus F28D

Your boiler has stopped working because it cannot safely ignite the flame required 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.

What the manual says

Manufacturer manual

Boiler lockout without sparking: check overheat stat. If sparking starts but burner does not light: check gas supply, pressure, or gas valve.

From this model's manual
Verified against the Ferroli Boiler Domina 80e 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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