Actron Air Error Codes Search Code or Problem Indoor Unit Error Codes E0 Communication failure Learn More E1 Temperature sensor failure Learn More E5 Fan motor malfunction Learn More E7 Airflow obstruction Learn More E3 Low refrigerant pressure Learn More Outdoor Unit Error Codes E2 High-pressure sensor failure Learn More E4 Low-pressure sensor failure Learn More E6 Compressor failure Learn More E8 Outdoor PCB failure Learn More
