I have a Coleman 7900 wall furnace. The heat doesn't come on. If I turn the blower on it works, so does the air. Does this furnace have a pilot light? If so, where? (we open that little door and there is nothing in there.) Thanks, Ginny

Usually they have a pilot lite for that model. The little door is the access to lite the pilot. They are a real pain to lite. Look around in there and you will see the pilot assembly then follow the directions that are on every unit or gas valve.