My SolarTouch says it's 20*F on my roof even though the air is 86*. I cut and stripped the wires going into the SolarTouch from the water and solar sensors just to make sure that wasn't the problem and it isn't.
I'm assuming the next step is to replace the solar sensor? When Pentair was out to fix my pump they said the water temp sensor was not a Pentair brand and that that could cause a misreading. So it seems like it would be good to replace the solar season with a Pentair brand one anyways.
Just want to be sure before I climb up there since I'm terrified of heights!