Medium
380 on Worcester Bosch Greenstar 28CDi

Your boiler is detecting that the incoming water is already hotter than the temperature you have set for your taps, which usually means a sensor is giving a false reading or there is a flow issue.

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

Inlet temperature greater than DHW Outlet Set point

From this model's manual
Verified against the Worcester Bosch Greenstar 28cdi Compact installation & service manual, page 66.
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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