Medium
CH light On (flashing) on Worcester Bosch 24CDi BF

Your boiler has temporarily stopped itself because it detected that the water inside is getting too hot, but it will attempt to restart automatically after a short cooling period.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed

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.

What the manual says

Manufacturer manual

Over temperature shut-down if flow temperature 5°C above set value. Three minute wait.

From this model's manual
Verified against the Worcester Boiler 24cdi Of installation & service manual.
Plain-English guidance below. Severity, DIY steps, costs and parts are our interpretation to help you act, not text from the manual.

Engineer required

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

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