How much does it cost to fix Baxi error code 布 & 皿 neons flashing?

Typical repair cost for the Baxi 布 & 皿 neons flashing fault is £90-250 including labour.

布 & 皿 neons flashing High

Baxi 布 & 皿 neons flashing Fault Code

Q: What does the Baxi 布 & 皿 neons flashing fault code mean?

Your boiler has reached an unsafe temperature or detected excessive heat in the exhaust, causing it to shut down for safety.

Also written as NEONSFLASHING — same fault.

The Baxi 布 & 皿 neons flashing fault code means: your boiler has reached an unsafe temperature or detected excessive heat in the exhaust, causing it to shut down for safety.. It appears on 2 Baxi models in our database.

Technical description: Overheat thermostat or Flue thermostat activated

Typical repair cost £90-250 (including labour)

DIY fix possible

Check that all radiator valves are fully openEnsure the boiler pressure is between 1.0 and 1.5 barAllow the unit to cool down and attempt a reset by turning the selector knob to 'R' for five seconds

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Baxi models that show the 布 & 皿 neons flashing fault code

Click a model for the full fault code list and model-specific repair notes.

Source

Baxi 布 & 皿 neons flashing fault code information on this page is sourced and cross-checked against the official Baxi service / installation manuals for each affected model.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 27 April 2026