I had 6 of my eggs in the hatcher, all pipped and when I looked this morning around 8:45am, 3 were doing the "zip" and when I got home they all looked the same as when I left. Tonight I checked and the temp was way down cause the heater was not coming on, but the fan was blowing. I read that the fan is always on. Because the fan was on I thought it was working. The Temp when they went in was 99.9 with 62% humidity. The wire was broken on the heater and my brother fixed it (he's an electrician). Now it is holding the temp. I don't know if I somehow caught the wire on something or if the 5 month old kitten pulled on it from the outside of the box and it broke? Sad it cost me 6 chicks