I saw this "cold" reading yesterday after having unplugged and re-plugged the SWG. I flipped the switch from OFF to AUTO and then back to OFF and the "cold" reading no longer displays. But I am wondering whether some sensor is not right since the salt reading has just sat at 3100 even after having added 3 40 lb bags of salt after opening the pool. From experience I speculate that the actual level at opening was 2600-2800. The pool store reports 3300 now. The first pool store I went to had told me the level was 500 prior to adding the 3 bags of salt which I know is wrong. Its frustrating having to deal with conflicting data when trying to get the chemistry right!