I have a carrier programmable thermostat that is approx 3 years old. The thermostat works fine, but the clock is not keeping time correctly (losing about 15 minutes a day). There hasn't been any power outages as none of my other clocks are affected.
I thought there might be a battery somewhere, but I took it off the wall and don't see one (I believe it is powered by AC). Does anyone know if there is a battery somewhere or does it probably need to be replaced?
Thanks