Medium
208 0 on Worcester Bosch Junior 24i

Your boiler is currently stuck in a professional testing mode used by engineers to check emissions, which prevents it from operating normally for heating and hot water.

Book a service

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

Chimney sweep demand

DIY fix possible

Check if the service/chimney sweep button is stuck and gently press it once to toggle the mode offTurn the boiler power off at the fused spur for 30 seconds and then turn it back onPress and hold the reset button for 5 seconds to clear the status

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