High
Reset neon illuminated (Red) on Baxi Combi 80e

Your boiler has detected an internal error and has entered a lock-out state, meaning it has switched itself off to prevent damage.

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

Turn selector to the reset position R. If light does not extinguish, go to sections H & K. Potential PCB or selector failure.

From this model's manual
Verified against the Baxi Boiler Combi 80 Eco 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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