I bought a house with a Carrier Weathermaker 9200. It has a propane conversion kit for my tank in the backyard. I ran out of propane in March and got it refilled, when I turned it back on it did not blow hot air. The fan would stay on but it wouldn't spark the propane. I figured out if I hit the rollout switch (manual reset) on the bottom of the burner assembly it would start inducer motor and begin to work, but when it cuts off it won't come back on until I crawl under the house and do it again. Is there something I can do or do I need to get a professional?