Hi All. When I start motor on Treadmill the main Breaker in the house trips. The control Panel is an MC2100E. The led stays steady on till i press the motor start button then the main house breaker trips. I have checked the Motor and and all the surrounding wiring and its ok. The fuse on the the control panel is not blowing.

 

Check the devices mounted to the heat sink, Also test with motor disconnected.