Low
15 on Baxi EcoBlue Heat

Your boiler is signalling a demand for heating in a secondary heating zone, which is often just an informative status rather than a hardware failure.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed

Monitor it

This is a minor fault. Keep an eye on it and mention it at your next annual boiler service. Reset the boiler and see if it clears.

What the manual says

Manufacturer manual

alternates with Zone 2 CH mode

From this model's manual
Verified against the Baxi Ecoblue Heat 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.

DIY fix possible

Check your thermostats to see if they are calling for heatEnsure your heating programmer is set to the correct timesReset the boiler to see if the status clears

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