I have a whirlpool electric dryer model # LE7000XKN(orW)O. It does blow out air, but not heated air. I noticed to timer ,which has 3 different settings, works on only the timed setting. The other 2, it just runs contiuously. I know it can be 4-5 differnet things that is causing it to not ignite. My vents are completely open, so I know its not them. Please help.