I just went thru the trouble shooting and had spark and good voltage at the gas valve solenoids. Water heater would try to light 3 times. I had ran a brush thru the burner tube and it was clean, no spiders. The one easy thing I failed to check was the actual gas orifice. It appeared clean but I did not run a wire in it to be sure. Replaced the gas valve assembly thinking it was bad. I knew the control board was working due to the voltage at the valve solenoids and the 3 light attempts. New valve and same no light. Decided to take a closer look at the orifice and found it was clogged. Stupid me -- the simplest thing was the cause. Cleaned out good with pipe cleaner and fires right up on 1st attempt with nice strong blue flame. Randu
