Carrier air conditioners deliver superior comfort with advanced refrigeration technology and energy efficiency.
High pressure switch activated. Check outdoor coil, refrigerant charge, and airflow.
Indoor coil freeze protection activated. Check airflow and refrigerant levels.
Low pressure protection activated. Check for refrigerant leaks and system charge.
Compressor protection activated. Professional compressor diagnosis required.
Outdoor ambient temperature sensor malfunction. Replace outdoor sensor.
Room temperature sensor fault. Check sensor connections and replace if necessary.
Evaporator coil temperature sensor fault. Professional sensor replacement required.
Indoor/outdoor communication failure. Check control cable and connections.
Indoor fan motor malfunction. Check motor operation and electrical supply.
Outdoor fan motor fault. Inspect fan motor and electrical connections.