Thanks Mike, lot of info there!
Michelle, worst come to worst, I can fully overhaul your Fanmaster and send it back with a 12 month warranty for a lot less than a second hand one of dubious history!
However, what's wrong with yours? if it's stopped blowing hot on mains electric? then have you found and pressed the reset switch?
You will find it here; www.arcsystems.biz/Pictures/fanmasterreset.jpg