How much does it cost to fix Potterton error code Overheat?

Typical repair cost for the Potterton Overheat fault is £150-350 including labour.

Overheat High

Potterton Overheat Fault Code

Q: What does the Potterton Overheat fault code mean?

Your boiler has automatically turned itself off because it has become dangerously hot and needs to cool down before it can be used again.

Also written as OVERHEAT — same fault.

The Potterton Overheat fault code means: your boiler has automatically turned itself off because it has become dangerously hot and needs to cool down before it can be used again.. It appears on 3 Potterton models in our database.

Technical description: The boiler has exceeded temperature limits. Indicator lit on the door panel.

Typical repair cost £150-350 (including labour)

Engineer required

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

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Potterton models that show the Overheat fault code

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

Source

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

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