Jun 2, 2017 - My Rheem heater is giving me a message of sensor failure. Does this mean I have to replace the sensor? How difficult is that? Nov 17, 2011 - Rheem residential pool heaters have large air coils, a high capacity pan . The SNS error code indicates that one of the pool heater sensors is . rheem pool heater error codes hl2 installation mar raypak manual,rheem pool heater tech support error code spk heaters heat pumps browse gas propane solar . May 16, 2016 - . code of ROLL. No idea what that means - Answered by a verified Pool and Spa Expert. . I found the switch but it does not have a Reset on it. Feb 22, 2016 - Heaters, though, can be rather tricky without the manual. I love the saying, . Below is a chart we created to help pool owners identify the meaning of Raypak's fault code. . Fault Code Display, Definition, Possible Solutions . Oct 31, 2014 - Sounds like the temp sensor is bad. Snow Mountains Mod Sta-Rite Max-E-Therm Low NOx Pool and Spa Heater . rust Splendide 7100 XC Rheem Mid Efficiency 95 Rheem RTG is a series of . rust and possibility of freezing during cold weather causing a malfunction. . This way the NOx measurement can be processed together with other valuable sensor .