Airflow feels weak or room temperatures remain high despite continuous running.

Vents blow room-temperature or hot air due to failed capacitors or low refrigerant.

The outdoor condenser or indoor blower will not engage when calling for cool.

Condensate pan overflow or clogged drain line spilling around the indoor unit.

Visible ice along the refrigerant line or frozen indoor evaporator coils.

Grinding, squealing, buzzing, or clicking sounds coming from the outdoor unit.

Complete system shutdown with no response from either heating or cooling modes.

Ductwork rattling, motor humming, or booming sounds during equipment startup.

Burners fail to ignite or blow cold air throughout the living spaces.

Tripped limit switch, faulty igniter, or safety sensor preventing ignition.

Blank display, unresponsive touch controls, or inaccurate temperature readings.

Reversing valve failure or auxiliary heat strips locked out in cold weather.