I am just finishing up a hatch with a little giant 10200 (forced air, manual temp adjust) with so so results. I think i have traced the problem to the manual "thermostat" not being a thermostat at all, but merely a timer circuit. Most people remedy this by keeping the room temp stable, therefore the heating rates stable. I stole the temperature control off of my kegerator for the late hatchers, it's the same one as in this link:
http://www.backyardchickenelearning.com/improving-little-giant-still-air-incubator/
Once they are out i will open up the cover and check the circuit for an actual temp sensor to confirm.
http://www.backyardchickenelearning.com/improving-little-giant-still-air-incubator/
Once they are out i will open up the cover and check the circuit for an actual temp sensor to confirm.