Dear Repair Technician,
The problem is complicated, it is not just (1) thermostat not matching
its own thermometer and not just (2)its thermometer not matching any
of my own thermometer. Main problem is (3) UNDER-SENSITIVITY OF
THERMOSTAT What happens many times (not always but often) is once you
move the thermostat just barely enough to turn A/C on, it STAYS on
until house is too cold...no matter how tiny the amount you change it
to turn it off, if oten stays off until house is too hot, etc.
So never mind (1) and (2) (which while not fun, I can live
with)..the main problem is (3) which is the thermostat itself..which
seems to need replacing. Anyway thank you for fixing this..