First of all, the a/c system is probably 30 yrs old. The outside unit stays running when the inside unit shuts off. After about 30 seconds, the inside unit turns back on again, and will sometimes only run for a few minutes before taking another 30 second break, all while the outside unit continues to run. The inside unit only stays off for an extended period of time once the outside unit is off as well.
I installed a programmable Honeywell thermostat about 1 year ago, and I am wondering if it is going bad. Is there any other explanation for this constant quick cycling?
It seems like it just started doing this last week when we got installation blown in the attic. Maybe just coincidence?