Low
Neon B Flashing very slowly on Alpha CD28

Your boiler is currently in standby mode and is working correctly, simply waiting for a demand for heating or hot water.

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

Electricity supply to the boiler is on.

DIY fix possible

Check that your room thermostat or programmer is set to 'on' or boost modeTurn up the heating dial on the boiler front panelEnsure the hot water tap is fully open if you are testing the hot water function

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