How much does it cost to fix Ideal error code FLUE OVERHEAT THERMOSTAT?

Typical repair cost for the Ideal FLUE OVERHEAT THERMOSTAT fault is £120-£350 including labour.

FLUE OVERHEAT THERMOSTAT High

Ideal FLUE OVERHEAT THERMOSTAT Fault Code

Q: What does the Ideal FLUE OVERHEAT THERMOSTAT fault code mean?

Your boiler has shut down because the exhaust gases have become too hot, which is a safety measure to prevent damage or dangerous fumes.

Also written as FLUEOVERHEATTHERMOSTAT — same fault.

The Ideal FLUE OVERHEAT THERMOSTAT fault code means: your boiler has shut down because the exhaust gases have become too hot, which is a safety measure to prevent damage or dangerous fumes.. It appears on 1 Ideal model in our database.

Technical description: Safety device that triggers if flue temperatures exceed limits

Typical repair cost £120-£350 (including labour)

Engineer required

This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.

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Ideal models that show the FLUE OVERHEAT THERMOSTAT fault code

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

Turbo2 24 Repair: £120-£350

Source

Ideal FLUE OVERHEAT THERMOSTAT fault code information on this page is sourced and cross-checked against the official Ideal service / installation manuals for each affected model.

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