What does E71 mean?

During the automatic calibration process, the fan speed parameter was detected to be outside the acceptable operating range.

• Faulty fan or fan speed sensor.
• Incorrect initial calibration settings.
• Issues with the main control board (PCB).

Click steps to track your progress.

1. 1

   Turn off the main power supply to the boiler, wait 30 seconds, then turn it back on.

2. 2

   If the error persists, the boiler likely needs re-calibration.

3. 3

   A qualified technician should check the fan speed and perform a new calibration if required.