Originally Posted by Pepsi
Turn the temp lever to hot before trying anything else. If it has been moved to cold somehow, your pilot light will light, but it will not turn the heater on. On some models this lever is behind the on off knob and can be easy to overlook. I know this sounds over simple. But simple things can be easy to look past because they seem so simple...
For informational purposes only.......there is no pilot on a direct spark ignition(DSI) water heater
. A coil provides a spark thru an electrode that ignites the LP once the igniter board opens the gas valve, and then stops sparking once the board senses the presence of the flame.
As for the problem, there are several places you should look. First, as mentioned above, is a clear gas supply line, especially at the orifice. This is a tiny, precision-drilled opening that meters the exact amount of LP that your specific model requires. You have to remove the supply tube, and you'll find the orifice threaded into the end.
Carefully remove it and blow compressed air thru it AND NOTHING ELSE!!!!
Never put anything, not even a tooth pic thru the orfice or you will damage it.
Once that is clean, blow out the supply tube and the burner itself and try re-ignition. If you have the same problem, you probably have a bad gas valve. This should first be checked wih a manometer for proper adjustment (11" water guage). If it is set at this parameter, then it is usually defective and should be replaced. They can NOT
Hope this helps!