Carrier Air Conditioner Error Codes & Problems

Flashing Light Carrier Air Conditioner A flashing light on a Carrier AC indicates an error code or a protection mode … E1 Carrier Air Conditioner Carrier AC E1 error means the indoor temperature sensor (thermistor) has failed … E4 Carrier Air Conditioner Carrier AC E4 error means the condensate drain pan is full or the drain is … Not Cooling Carrier Air Conditioner If your Carrier AC is running but not cooling, clean the air filter first — … Not Heating Carrier Air Conditioner If your Carrier AC is set to Heat mode but not warming the room, check that the …