does the fan and light still work in it? if it does,,, theres your fan. if the light works (and you dont want it on all the time), you could put a inline toggle switch on it and turn the light on as you need.
i have the same set up as you do, and love it! it works perfect!!!! if your interested,,,, i could make a video of it and post on youtube (in a few days) and leave a link on this thread..
spooky