Please help again, I am having heating problems, my temperature is 27degress or 80 degress F. I have turned my thermostat heater to minimum which is marked 18 degree the tempeture will not drop. I bought another heater and themostat to double check but the temperature is still sitting high. I want my temperature to be around 24 degress but i can't seem to reduce it. Even when the heater is on minimum, the light comes on the heater. What is going on? The room temperature is around 21-22c