Dryer is a little over a year old. Just went out of warranty 3 weeks ago. Go figure. It starts and operates fine except no heat on any settings no matter how long I let it run. Don't hear the igniter lighting like you do with a wall furnace. I believe I've heard it light before, just took a few minutes. Not sure how to troubleshoot considering it's gas. It's also stacked on top of the washer in a closet. Will have to pull both just for access. Any advise on where to start? I'm very handy with mechanical things.