I've read the posts on other threads about hi-temp sensors and thermistor but wanted advice before I order a part today. Background: I haven't used heater in almost two years. I noticed about 3 weeks ago it said my water temp was 99 or 101 on the HEATER. I have an EasyTouch system which shows correct water temp so I knew it wasn't right. I also read on here about the Trichlor tabs causing problems. While my pool was always salt water... two seasons ago (LIKE AN IDIOT) I tried out the Pentair tab feeder for one season. Hated the upkeep and everything about it. New liner installed last summer and went back to SWG. Based on the info here that Trichlor may have screw up my heater. My question is what the likely first part to replace is?
I fired the heater up but it will only run until the "heater display" said 107 degrees. As it cools back to about 100 it fires again and warms it up until "heater display" say 107 and stops again so I think all the other stuff may be good. My EasyTouch reads water at about 85 degrees while spa is still set to 104. So my EasyTouch says 85d / 104d (which left number is actual and right number is what the setting is on). I did replace the temp probe on the EasyTouch a couple of years ago so I think it is very accurate. Any guidance on how to narrow down which parts to replace first? 1) High-Limit Thermostat - 115F part number 471587,
2) High-Limit Thermostat - 150F part number 471694f or 3) Thermistor Probe part number 471566 ?
I fired the heater up but it will only run until the "heater display" said 107 degrees. As it cools back to about 100 it fires again and warms it up until "heater display" say 107 and stops again so I think all the other stuff may be good. My EasyTouch reads water at about 85 degrees while spa is still set to 104. So my EasyTouch says 85d / 104d (which left number is actual and right number is what the setting is on). I did replace the temp probe on the EasyTouch a couple of years ago so I think it is very accurate. Any guidance on how to narrow down which parts to replace first? 1) High-Limit Thermostat - 115F part number 471587,
2) High-Limit Thermostat - 150F part number 471694f or 3) Thermistor Probe part number 471566 ?