BoilerFaultCodesBaxi CM190 Fault Code
The Baxi CM190 fault code means: this code is not actually a fault, but an information message indicating the current temperature setting for your heating zone.. It appears on 1 Baxi model in our database.
Technical description: Zone ambient set point °C
DIY fix possible
Check your thermostat or room controller to see if you have accidentally entered a settings menuPress the 'Reset' or 'Back' button on the boiler interface to return to the main displayRefer to your user manual to navigate out of the advanced settings view
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Baxi models that show the CM190 fault code
Click a model for the full fault code list and model-specific repair notes.
Source
Baxi CM190 fault code information on this page is sourced and cross-checked against the official Baxi service / installation manuals for each affected model.
Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 7 July 2026