How much does it cost to fix Potterton error code E (number)?

Typical repair cost for the Potterton E (number) fault is £120-350 including labour.

E (number) High

Potterton E (number) Fault Code

Q: What does the Potterton E (number) fault code mean?

Your boiler has encountered a general operational error, likely due to an interruption in the gas supply or a failure during the ignition process.

Also written as ENUMBER — same fault.

The Potterton E (number) fault code means: your boiler has encountered a general operational error, likely due to an interruption in the gas supply or a failure during the ignition process.. It appears on 1 Potterton model in our database.

Technical description: Operating errors or fault lock-out conditions are displayed as E (number) - see chart on Page 7.

What causes the Potterton E (number) fault?

This fault occurs when the boiler attempts to light but fails to detect a stable flame, causing the system to shut down for safety. It is often caused by a lack of gas reaching the burner or a worn-out spark probe that can no longer ignite the fuel. In some cases, the internal control board may be failing to send the correct signals to the gas valve.

Typical repair cost £120-350 (including labour)

DIY fix possible

Check that your gas emergency control valve is in the 'on' positionIf you have a pre-pay meter, ensure it has sufficient creditPress and hold the 'Reset' button for five seconds to restart the boiler

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Potterton models that show the E (number) fault code

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

Powermax HE Repair: £120-350

Source

Potterton E (number) 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