Medium
CA on Worcester Bosch 537i

Your boiler is detecting that water is moving through the system faster than it should, which is preventing it from heating up correctly.

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

Flow rate too high.

Engineer required

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

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Related fault codes

C6View →A7View →

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