The power light comes on when the element is on. If temp got up to 100 and you turned it off and back on again, you would need to turn the knob past the current internal temperature of the smoking chamber. When the temperature passes the setting on the knob it takes it up past that current set temp as referred to by us as swings in other posts. Then the element turns off along with the light until it gets a certain temperature below the desired temp. The element then comes back on to raise it to the desired set temp.
Nothing to worry about.
