I had to move the sensor farther away from the stove, the installer had it coiled up on the back corner near the intake. The current 30 degree days and teens/twenty nights were causing an issue with that location, wasn't heating the house right. I bumped up the temp in Room Temp mode and even 80 degrees wasn't working right, moved it about 3 feet away and seems to work much better now set at 77 or so.