Medium
1-d4 on Worcester Bosch Greenstar 8000

Your boiler is having trouble communicating with your solar water heating system, which means the solar panels may not be contributing to your hot water at the moment.

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

Solar unit fault

Engineer required

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

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