Polaris SOL 1000 controls (which I despise)
Roughly 10yrs old....just bought the house with it in August.
So if I turn on the spa and heater, it ignites and warms to roughly 90-94 degrees then cycles off. I discovered the water temp sensor had gone bad, as I'm in Houston Texas but it said the temp was -34, haha.
I replaced that today and it now is giving me a reading within 3-4 degrees of the floating thermometer, however still the heater won't stay on past 90-95 degrees.
Basically as soon as it starts to feel good, 10min later you notice it's a chilly, then 10min later it starts to feel good again, and so on.
Ideas? My next ideas were he high limit switch or the heater temp sensor, but if would like to have a decent idea before I just start dropping $ on shots in the dark.
Thanks in advance!