Overheat Condition High

Firebird Overheat Condition Fault Code

Also written as OVERHEATCONDITION — same fault.

The Firebird Overheat Condition fault code means: your boiler has become too hot and has automatically shut itself down as a safety precaution.. It appears on 1 Firebird 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: A manual reset overheat limit thermostat is located at the rear of the electrical control panel. If a boiler overheat condition arises, the burner will stop and remain inoperative until this thermostat reset button is depressed.
Typical repair cost £0-120 (including labour)

DIY fix possible

Allow the boiler to cool down completely for at least 20 minutes.Locate the manual reset button situated at the rear of the electrical control panel.Press the button firmly until you hear a click to reset the safety thermostat.Ensure your radiator valves are open and the system pressure is correct before restarting.

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Firebird models that show the Overheat Condition fault code

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

Source

Firebird Overheat Condition fault code information on this page is sourced and cross-checked against the official Firebird service / installation manuals for each affected model.

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