Medium
F7 on Ideal Concorde

Your boiler has detected that the electrical supply coming into your home is at too low a voltage to operate safely.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed

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This fault should be looked at by a Gas Safe engineer within the next week or two. It may get worse if left.

Technical description

Low mains voltage – contact electricity provider.

Engineer required

This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.

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Related fault codes

F1View →L2View →

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