The bathroom fan/light went out and I replaced it. Apparently I did not hook wires up right.
There is a black encased wire with hot, neutral, and ground. There is a white encased wire with hot neutral, and ground. I hooked black to black on fan, blue to black, white to white and grounds to grounds.
When I turned power back on, the fan runs without light switch up. I swapped black and blue wires and the light stays on without switch on.