Medium
325 on Worcester Bosch Greenstar 28CDi

Your boiler is having trouble detecting the temperature of the water it is heating for your taps and shower because a sensor is loose or not plugged in properly.

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

DHW-NTC not correctly installed

From this model's manual
Verified against the Worcester Bosch Greenstar 28cdi Compact installation & service manual, page 65.
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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