Problem
The AC system turns on unexpectedly without adjusting the thermostat.
Possible Causes
Thermostat programming settings
Faulty thermostat
Electrical control issue
Temperature fluctuations
How To Fix It
Check thermostat schedule settings
Replace thermostat batteries
Reset thermostat if possible
Monitor when the system turns on
When To Call A Professional
If the AC continues turning on unexpectedly, the thermostat or control board may need inspection.