25E High

Baxi 25E Fault Code

The Baxi 25E fault code means: your boiler has reached its maximum safe temperature and has shut down as a safety precaution to prevent overheating.. It appears on 1 Baxi model in our database.

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: Boiler Max Temperature Exceeded
Typical repair cost £100-£350 (including labour)

DIY fix possible

Check if any radiator valves are turned off and open them fully to allow water flow.Ensure your system pressure is between 1 and 1.5 bar on the pressure gauge.Try resetting the boiler via the control panel.

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Baxi models that show the 25E fault code

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

Source

Baxi 25E 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 7 July 2026