Low
Neon D illuminated on Alpha CD24

Your boiler is receiving power correctly and is currently in its normal standby state.

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

Mains supply on

DIY fix possible

No action is required as this is a status indicator rather than a fault code.If you have no heating or hot water, ensure your external thermostat or programmer is set to demand heat.

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