High
Burner on neon NOT illuminated on Potterton Performa 24

Your boiler is failing to ignite because it is not receiving the signal to start the gas flow, meaning you will have no heating or hot water.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed

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.

What the manual says

Manufacturer manual

Ensure gas is on and purged. Check PCB - M4 connector is approx 70-140V DC, terminals 23 & 24. If NO, replace PCB. If YES, replace gas valve.

From this model's manual
Verified against the Potterton Boiler Performa 24 installation & service manual.
Plain-English guidance below. Severity, DIY steps, costs and parts are our interpretation to help you act, not text from the manual.

Engineer required

This is a high severity fault. Stop using the boiler and call a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.

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