Repair StrengthMaster Treadmill AC motor autotuning

1) Press enter + speed up + incline up 

2) Keep pressing “Enter” till the main window shows up “AUTO TUNING”

3) When LED below show “AUTO”, Press “Start” and speed “up” buttons to proceed auto tunning.
Warning: Do not stand on running belt when proceeding auto tunning.         

4) Abour 25 seconds later, the main window will stop without any numbers.

5) Press ENTER and incline “up” back to stand by mode as below.

Broken controller? Buy the replacement here:

Treadmill Inverter for professional equipment Endex Jim224

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