It seems like everything that could go wrong is during this spring startup. Now my 4 year old heater (Jandy Lite 2) is acting up. There's a switch or valve that makes a loud clicking noise. It sounds like its trying to start or ignite the gas. The switch clicks like a few times a second. The odd thing is this happens after the heater is on for a while.
Is there something that keeps the flame going? The ignitor is only used to start things, not maintain them right?
As far as I know the gas source is fine. But if the gas source is bad maybe the gas stops and the ignitor is trying to restart things.
Any other possible issues?