Water Heater Won't Start

Del was correct. If it was a power burner from the factory, the next thing in sequence is the draft proving switch. A little safety and common sense, these are not hard to work on. The logic is similar for most power ( that's with a fan folks, vs the ones without ) burners. 1. call for heat 2 start the draft fan 3. prove the draft fan is working, usually a end switch AND a draft or similar diaphragm switch.