I have a Honeywell Chronotherm III thermostat that is the original in the house (1993). I have a question about its operation that I hope someone can shed light on.
It seems that the thermostat will keep the AC running for a long time even after the thermostat says that the desired temperature has been reached.
For example, it is set on 77 right now, and has been on 77 for a couple of hours, and the AC has been running the whole time. I understand that the thermostat shows an average over a period of time, but how long should it be on a set temperature before shutting off the AC?
It does eventually turn off later in the evening and then appears to start a normal "cycle" of off and on.
I read in the manual that this thermostat also senses the wall temperature. Could this be skewing the temp readings and keeping the AC running longer than it should?