I thought I had seen this mentioned it before, but now I can't find it. And I've misplaced my bator instructions, because I was carrying them around intending to read them when I got a second. Ok, tomorrow, ie. Sunday is lockdown. Yesterday or so I noticed that the temp has gone up. It's been easily staying at 100* all this time, with only minor occasional adjustments. And then suddenly [Thursday or Friday] it seems to have jumped up to 102. I would turn it down and come back and it's still at 102. So I turn it down some more. I came home this afternoon and it was at 103!!!. Wait I just got up and it said 104 [and that's just after opening it to turn all the eggs, slightly adjusting the temp down!] I've now left the lid ajar to let it cool off. Are the growing chicks producing all this extra heat? Why suddenly do I have this trouble? blessings, deborah [It is 60* outside as well , but that's outside. . . . but I think it's been warm before w/o this trouble. In fact, I had the gas fireplace on in the same room when it was snowing outside- just so it wouldn't get a chill. So why would it matter now?] Going back to check on temp . . .