Baxi · Duo-tec 2 Combi GA Boilers
This error code indicates that the flue NTC sensor has been activated, likely due to high flue gas temperatures. The boiler's display will show the spanner symbol and the numeric error code, signifying a safety shutdown.
Click steps to track your progress.
Press the 'R' (reset) button firmly for several seconds to attempt to clear the fault.
If the error persists, turn off the boiler's electrical supply at the isolation switch for 30 seconds, then turn it back on.
If the fault code reappears, contact your installer or the Baxi service division ('heateam') for assistance.