I have a harman p43 stove. When I attempt to run the stove in room temp mode the stove will not regulate the temperature. If I set it for 70 degrees I will wake up in the middle of the night to find it 80 degrees. On initial startup if I turn the temp setting down the status light goes out but if the stove has any heat to it I can turn it down to 50 degrees and it will just keep running. The temperature sensor, control board and esp have all been replaced trying to fix this problem. The temperature sensor is in the middle of the room approximately 5 feet off the ground. The stove is clean. I don't know what more to do. Help me please!