I was staying in PA this weekend could not get hot water heater to light.I have a atwood unit automatic lighting from switch inside coach. I cleaned all connections and still nothing. After these trie...
I had the same problem with our new to us Horizon. Then I found out that a water heater filled with hot water won't light when you switch it from 110 to gas. I turned off the 110, drained some hot water into the sink and hit the switch...worked perfectly. I used the gas heated hot water to wash the egg off my face.