We just purchased this treadmill on Saturday and have only used it a couple of times, now last night when I tried to use it, it tries to go but nothing. I pushed the go button, it tries to run but the belt won't move. We adjisted the belt but still the same result. we toke the cover off so you can see the motor and ajusted that thing on the side with the magnet and the tried to run it same thing, but we noticed that there is a sensor on it that has a red light that blinks 4 to 5 times after the go button is pushed. Any suggests?

Exercise & Fitness - Proform - 4.5 Trainer Treadmill