High
overheat stat trips on Ideal Classic NF

Your boiler is getting too hot and triggering a safety switch to shut it down 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.

Technical description

Boiler reaches temperature and overheat thermostat trips. If flow temperature is above 90°C replace Control stat. If below 90°C replace limit stat.

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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