A/C Thermostat

[gator67]

Lately, our front A/C is not cutting off like it used to. It cools down fine, but won't cut off unless we turn the temp way up. It's almost like the tolerance is off and it tries to cool down too far before cutting off. Has anyone else had a problem like this?

Also, we have a DuoTherm thermostat and I am considering replacing it. I have the user's guide for it, but not installation instructions. Does the front of the thermostat just pop off? I'm afraid to push too hard for fear of breaking something, but I figure if I can get the cover off maybe I can find an adjustment or figure out how to replace it.

[Ted III]

Jerry, I have the same problem with my rear A/C. Any thoughts would be appreciated. Thanks

[Nick Escamilla]

Jerry
To remove the cover you need to pry on the bottom of the thermostat cover with a small screw driver, not much can be done once removed. It's all electronic with no adjustments. You may want to check out the sensor which connects to the AC unit. Remove the inside cover of the AC unit and see if the sensor wiring is tight to the wires coming from the top end of the unit. Not sure how to check if the sensor is bad. You may want remove the sensor cover and do visual to see if any wires are broken.