Medium
356 on Worcester Bosch Greenstar 12i System

Your boiler is struggling because the electricity supply from your home to the unit is weak, unstable, or being interrupted.

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, (the voltage may be interrupted or inconsistent).

Engineer required

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

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Related fault codes

357View →358View →

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