Medium
326 on Worcester Bosch Greenstar 28CDi

Your boiler is having trouble reading the temperature of the water stored in its internal tank, which may cause your hot water to stop working 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

Storage-NTC defect

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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