Medium
Yellow LED On permanently on Halstead iHeat 24c

Your boiler has detected a problem with the hot water system, meaning you likely have no hot water even if the heating is still working.

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 fault

From this model's manual
Verified against the Halstead Iheat 24c 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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Related fault codes

Green LED flashingView →Yellow LED flashingView →

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