Incubator temp dropped and I can’t rectify it

[ScottishLad]

Its day 20 and the temp has dropped to 34 degrees c. I can’t get it to go back to 37.5 - can anyone advise?
Thank you

 

[EggSighted4Life]

Chicken eggs? Where is humidity? Any peeping sound yet?

Maybe wrap towels or blankets around the outside of the bator being sure not to block any vent holes.

Are you sure it isn't the thermometer gone awry?

 

[cmfarm]

The last few days the temperature isn't as big a deal. Some people even lower the temp on hatch day to 95 degrees.