Thermostat is set on 70 degrees, but the furnace is not kicking on until house reaches 66 degress. Does not matter what temp I set thermostat at, it still doesn't work until it reaches 66 in house.
Used a jumper wire from red to white and furnace kicked on and ran until I undid wire.
Bought new thermostat, hooked it all up, set temp at 72.
Waited... Furnace kicked on at 66!
Anyone know what is wrong?
Thanks,
Kerry