High
OVERHEAT NEON on Halstead Hero

Your boiler has automatically shut itself down because it detected that it is getting too hot, likely due to a circulation problem.

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.

Technical description

Neon light indicating that the boiler overheat thermostat has tripped.

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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