Low
Neon I3 on Ideal Optimum 001

Your boiler is receiving power from the mains electricity and is operating normally.

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 electricity ON

DIY fix possible

This fault may be fixable without an engineer. Check your manual first.

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