Baxi · Duotec+ GA Compact Boilers
The NTC flow sensor, which measures the temperature of the water flowing out of the boiler, is defective or has a wiring problem. This can affect temperature regulation.
Click steps to track your progress.
Press and hold down the Reset button for 2 seconds to try clearing the fault.
Ensure the boiler's power supply is stable.
If the fault persists, contact an Authorised Service Centre to check the sensor and wiring.