• If the screen is blank, replace the batteries (programmable models)
  • Check to ensure that your thermostat is operational (smart models)
  • Check to verify that the cooling mode has been activated.
  • Make certain that the temperature you seek is lower than the present room temperature.

 

  • Coils that are dirty as a result of a lack of yearly maintenance
  • Air filters that are clogged and limit airflow
  • A clogged drain pipe, which may result in moisture accumulation.
  • Leaks of refrigerant cause cooling power to be reduced.