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.

Technical description

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.

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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