1. E1: Sensor malfunction. Check the sensor and its connections.

2. E2: Motor overload. Turn off the machine and unplug it. Wait for a few minutes before restarting.

3. E3: Belt speed error. Check the speed sensor and/or the motor controller.

4. E4: Calibration error. Contact customer service for assistance.

5. E5: Incline error. Check the incline motor and/or the incline sensor.

6. E6: Console error. Restart the machine and check for loose wires or connections.

7. E7: Communication error. Check the console and/or the wiring.

8. E8: Heart rate sensor error. Check the sensor and its connections.

9. E9: Fan error. Check the fan and its connections.

10. E10: Power error. Check the power supply and/or the power cord.

11. E11: Temperature sensor error. Check the temperature sensor and its connections.

12. E12: Emergency stop error. Reset the machine and check if the emergency stop button is working properly.

13. E13: Incline motor error. Check the incline motor and its connections.

14. E14: Motor control error. Check the motor controller and its connections.

15. E15: Heart rate control error. Check the heart rate control system and its connections.

Remember to always consult your user manual or contact customer service for assistance when encountering any error codes on your treadmill.