I have a Honeywell round thermostat that looks like a manual mercury type but is in fact electronic. I think its a CT87N.
Anyhow.. when the thermostat is set to heat the house, it turns the heater on at about 2 degrees below set point and off at about 1 deg above the set point.
However, when it is cooling in the summer, I can set it at 76 degrees and it will still bring the house down to 70 or so.
The air conditioner turns on and off during the day as if its being controlled by the thermostat but the thermostat seems to want to cool the house down a good 6 to 8 degrees or more past the set point.
Any ideas? I'm a bit stumped on what it could be.
Anyhow.. when the thermostat is set to heat the house, it turns the heater on at about 2 degrees below set point and off at about 1 deg above the set point.
However, when it is cooling in the summer, I can set it at 76 degrees and it will still bring the house down to 70 or so.
The air conditioner turns on and off during the day as if its being controlled by the thermostat but the thermostat seems to want to cool the house down a good 6 to 8 degrees or more past the set point.
Any ideas? I'm a bit stumped on what it could be.