Air Conditioner Error Codes

  York Rooftop Air Conditioning Units Error Codes Alarm Codes Description 01 Compressor system 1 (compressors 1a, 1b) locked out on high pressure control. the circuit opened three times within a 2-hour window. 02 Compressor system 1 (compressors 1a, 1b) locked out on high pressure control. the circuit opened three times within a 2-hour window. 03 Compressor system 2 (compressors 2a, 2b) locked out on high pressure control. the circuit opened three times within a 2-hour window. 04 Compressor system 2 (compressors 2a, 2b) locked out on high pressure control. the circuit opened three times within a 2-hour window. 05 Compressor system 1 (compressors 1a, 1b) locked out on low pressure control. the circuit opened three times within a 1-hour window. 06 Compressor system 1 (compressors 1a, 1b) locked out on low pressure control. the circuit opened three times within a 1-hour window. 07 Compressor system 2 (compressors 2a, 2b) locked out on low pressure control. the circuit opened three tim...

  When the system determines that one of the faults listed below has occurred an error code will be displayed in the LCD. Dometic Thermostat Error Codes Error Codes Solution E1 Loss of communication between the CCC 2 thermostat and all system power module boards. System will shut down. E1 Loss of communication between the CCC 2 thermostat and an individual system power module board. The LED will display error code EI and the zone num- ber that lost communication. Any additional zones that loose communication will blink in addition to the current zone. E2 Open circuit or out-of-range indoor temperature sensor. All heat , cool, and de- humidify operations will be locked out. Manual fan operation will continue. E3 Shorted Indoor Temperature Sensor. All heat, cool, and dehumidify operation will be locked out. Manual fan operation will continue. E4 Open circuit or out of range Outdoor Temperature Sensor (select models). Heat pump and dehumidification operation will be locked out. Air co...