I have a Hitzer model 608 stoker that came with a coal-trol system. The question I have is when the the convection fan goes to turn on ,its on ,off,on,off,ect... for about a min.or sointill it decides to stay on. Is this a normal function? The coal-trol stat is around the corner, not in direct line of sight of the stove, so the fan is not blowing on the stat. Any suggestions as to whats going on . It gets a little anoying. Thanks for any help!