As the title suggests, I think I may have a temperature sensor fault. My system is fully automated and has been functioning flawlessly for 3 years. The water temperature sensors were indicating what my SWG sensor was indicating within a few degrees and was always bang on my thermometer in the water. early this season, we had some good Thunderstorms that cut out the power a few times, and I seem to be having a temperature issue since then.
My SWG and water temperature sensor seem to be stuck at 82F. That's not a good thing since my solar heater valve is dependant on that sensor to know when to open the valve (when the water is cold) and when to close the valve (when the water is at 90F).
I didn't think it was a big problem because after I had noticed the problem a few weeks ago, I gave it a few days and went back to check the water temperature sensor in the PL-P-4-CUL unit. It was showing 87F... I thought: problem solved!!!
But for the last few days, it's still stuck at 82F. So I just went out now because it's been hot all day. I looked at my thermometer in the water, and it's showing 88F. What I find really weird is the fact that the SWG AND the water temperature sensor show 82F. They can't both be wrong can they? They must be, as the water is at 88F...
I tried looking through all the menus... no luck. My air sensor and solar sensor (identical temperature sensors) seem to be working fine as they are indicating as they should.
Should I just replace the water temperature sensor and hope for the best? What about the SWG temperature?
Any input would be appreciated.