Low
Green light flashing slowly on Potterton Suprima HE

Your boiler is currently in standby mode and is working correctly, simply waiting for a signal from your thermostat or timer to start heating.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed

Monitor it

This is a minor fault. Keep an eye on it and mention it at your next annual boiler service. Reset the boiler and see if it clears.

Technical description

Standby or lack of call for heat (Switch live demand)

DIY fix possible

Check your room thermostat is set higher than the current room temperature.Ensure your heating programmer or timer is set to be 'On'.Check that your hot water cylinder thermostat is set correctly if you have a traditional system.

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