green light flashes rapidly High

Potterton green light flashes rapidly Fault Code

Also written as GREENLIGHTFLASHESRAPIDLY — same fault.

The Potterton green light flashes rapidly fault code means: your boiler is attempting to start but failing to stay lit, which means it cannot provide heat or hot water reliably. this is likely due to the system detecting a failure in the ignition process.. It appears on 6 Potterton models in our database.

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: Gas valves open and ignition for 3 seconds
Typical repair cost £150-300 (including labour)

Engineer required

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

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Avoid the next call-out bill

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Potterton models that show the green light flashes rapidly fault code

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

Source

Potterton green light flashes rapidly 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 7 July 2026