Medium
Burner On (Green) light flash on Potterton Performa SL HE 9 2

Your boiler is currently trying to light its flame, but it is taking longer than expected to successfully start up.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed

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This fault should be looked at by a Gas Safe engineer within the next week or two. It may get worse if left.

Technical description

Checking for burner ignition

Engineer required

This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.

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