Problem description:The treadmill displays E04 and E05
Reason analysis:
1) Rotate the blade of the fan inside the motor by hand to see if it can smoothly rotate for one circle see if there is stuck or not.
2) If the motor fan blade is not stuck, there is a problem with the controller
Solution:
1) The motor is stuck and needs to be replaced.
2) If the motor is smooth, then replace the controller.