Hey folks, I have a 2001 Coleman taos. The heat had been working fine. at some point last year just before hunting season it started acting up. The fan will kick in and just blow air but the heat will not turn on. There were a few times that It did kick in for a while and then would stop working in the middle of the night. I'm gearing up to get outdoors for a bit again and am wondering if there are any troubleshooting methods that I should try before I go ahead and take my pup to a repair shop? Thank you for any and all info, Jason.