My buttons on bottom. Will not let me change them is there a way to unlock them they r set at 5 -2-1 and its hot in house i have temp set at 1 and blower at 1 its 87 in house and burning bag and half pellets a day .I would like to turn down the low burn to 1 or 2 so I don't have to keep turning stove off and on would appreciate some feed back