Are you SURE your temp/humidity is actually reading correctly? I ask because this just happened to me and ended up being a low battery :/ I thought it was at 96 degrees all the sudden and adjusted, then it was 102, then 96 - I was losing my mind and it finally occurred to me to get another hygrometer in there. The original said 96 and the new one read 101! I am having excellent luck with this one http://www.walmart.com/ip/Acu-Rite-Indoor-Outdoor-Thermometer/896347 and just run the probe down into the bator through the vent hole. I find that my humidity in the bator is about 9 to 12 percent less than room humidity. I just randomly check it when I candle etc.I have asked a few times about the dry method but haven't had an answer. I will try here.
I tried and my air cell was 1/3 of the egg by the end of the first week. The humidity was staying between 29% and 35%. Also, when the humidity dropped to 29% the temp would jump to 106'. What am I doing wrong?
I have been keeping the humidity at 40% and the temp is fine unless the humidity drops.