Medium
BE on Worcester Bosch Greenstar Heatslave II

Your boiler has identified a temporary internal issue that is preventing it from firing up, acting as a safety pause to protect the system.

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

Blocking error spanner symbol (Accessed via info menu)

Engineer required

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

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