This is the second season using our Kozy pellet stove. First season and the first month of this season, it worked great, but now we are smelling smoke when we use it. My guess is a loose pipe or connection somewhere in the venting system, but I'm curious as to why it would starting smelling now. If I loosened a pipe while cleaning it this fall, wouldn't I smell smoke the first time I fired it up? Could it be something else? Where do you start when you're trying to find out where it's not sealed well? And if it is in the pipe which is enclosed, how in the world do you get to it to fix it?

Thanks for any advice!

And if it is in the pipe which is enclosed, how in the world do you get to it to fix it?

Take it apart.