Low
02 on Baxi EcoBlue Heat

Your boiler has lost its connection to the outside temperature sensor, which helps the system run more efficiently based on the weather.

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 Outside Temperature (where Sensor fitted)

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 for any obvious damage to the sensor unit fixed to your outside wallPress the 'Reset' button on the boiler control panelWait to see if the error clears; the boiler will still provide heating and hot water in the meantime

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