Jandy SWG started throwing error code 174 this morning (water temp >108F). Temp on the control box shows 108 (sometimes 109). Independent pool sensor has pool water at 90 (it's summer in Tucson). Cleaned sensor and cell and reinstalled. No changed - still solid EC 174. I have the troubleshooting manual - it has instructions for calibrating the salinity sensor but nothing on the temp sensor. Can't find anything on the web either. Thought about putting a bag of ice around the sensor to see if it makes a difference. Any suggestions?