Medium
F17 on Saunier Duval Enviroplus

Your boiler has detected that the incoming electricity supply is not strong enough to run it safely, causing the system to shut down.

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

Power supply under voltage fault

Engineer required

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

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Related fault codes

F16View →

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