High
Green light flashing slowly on Potterton Profile 60E

Your boiler is currently waiting for a signal from your heating controls, meaning it does not know that you want the heating or hot water turned on.

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

No switch live demand to the boiler

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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