I have a Sears Pro Form 730si. The treadmill goes for a few seconds and stops. An error message E4 appears in the speed indicator box. What is the problem with the treadmill?
I believe E4 on ths 730si means that the speed of the motor the sensor is detecting is greater than the set speed. E2 would be the opposite. I believe there is a way to calibrate the speed. Look at the smaller motor controller board.
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Magnet won't start my Pro-Form Crosswalk 400e Treadmill
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