Ok so we just had a new oil boiler heater installed. We have base board heaters through out the house. Two floors. Ok so we set the thermostat to 68 and the thermometer is reading 75 and the heater keeps turning on. So we put the stat to 55 to see if it still kicks on and it does even though the stat is reading 75. It's super hot upstairs and slightly chilly downstairs... Any help/advice would be great!