I'm hesitant to reply given that I'm only 12 days into my first attempt...but a similar incident occcured here.
For the first 3 days, I trusted the thermometer that came with the LG 9200. On more of a whim than anything else, I decided to place a medical thermometer in the incubator to confirm the LG thermometer's reliability. The medical thermometer registered 105 at the top of the eggs. Mine is a still air incubator which I knew meant that the temps could be lower or higher in other areas of the incubator.
I immediately made the necessary adjustment but was very concerned that the eggs would not develop.
We candled on day 6 and saw movement in 5 of the 18. On day 10, we candled again and saw definite movement in 9 of the 18 with 3 or 4 others that are probably viable too.
All that to say, the temperature was tolerable for our eggs.
Hope that helps!