Edit: Cracker modified his original question, but I will let the following response stand:
Originally Posted by Cracker
But, I will assume the "reset" button you reference is a thermal overload switch. Long ago, I ran into a situation where I could not get a motor restarted. Since it had a reset button similar to what you described, I figured the motor had overheated.
Letting the motor cool for a couple of hours, I pushed the button. Nothing happened. [snip boring detail]...I found I was not pushing the button hard enough. Once I finally did, it reset with a distinct "click".
My suggestion is "Push harder".