Overheat (Red LED) High

Potterton Overheat (Red LED) Fault Code

Also written as OVERHEATREDLED — same fault.

The Potterton Overheat (Red LED) fault code means: your boiler has detected that it is getting too hot and has automatically switched itself off to prevent any damage.. It appears on 1 Potterton 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: It will require manual re-setting if an overheat condition occurs (the LED will go Red). The re-set button is located at the bottom right of the user control box.
Typical repair cost £120-250 (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 (Red LED) fault code

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

Source

Potterton Overheat (Red LED) 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 7 July 2026