How much does it cost to fix Potterton error code Red LED: Flashing Red?

Typical repair cost for the Potterton Red LED: Flashing Red fault is £120-250 including labour.

Red LED: Flashing Red High

Potterton Red LED: Flashing Red Fault Code

Q: What does the Potterton Red LED: Flashing Red fault code mean?

Your boiler has detected that it is getting too hot and has automatically switched itself off to prevent damage or safety issues.

Also written as REDLEDFLASHINGRED — same fault.

The Potterton Red LED: Flashing Red fault code means: your boiler has detected that it is getting too hot and has automatically switched itself off to prevent damage or safety issues.. It appears on 2 Potterton models in our database.

Technical description: Overheat condition (Overheat thermostat has operated)

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 Red LED: Flashing Red fault code

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

Source

Potterton Red LED: Flashing Red 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