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Actron Error Codes

Every Actron error code we have catalogued, with what it means on site — 44 codes in total. In R-Pro, tap any code to get the meaning, likely causes and inspection steps, even with no signal in the plant room.

44 codes
CodeWhat it means
E1Auxiliary sensor malfunction
E2Coil out sensor malfunction
E3Room sensor fault
E4Indoor coil sensor malfunction
E5Indoor/outdoor communication failure
E6Discharge temp sensor fault
E7Outdoor coil sensor fault
E8Outdoor discharge sensor fault
E93-phase pressure fault
E11Probe 1 config error
E12Temp exceeding normal limits
E13Probe 3 config error
E14Probe 4 config error
E15Discharge temp out of range / comp high pressure
E16OD coil sensor malfunction
E17OD coil sensor malfunction
E18Outdoor coil sensor fault
E19Probe 9 config error
E20Air temp sensor malfunction
E21Multi-Input 1 out of range
E22Multi-Input 2 out of range
E23Outdoor fan 1 issue / motor fault
E24Outdoor fan 2 issue / motor fault
E25Indoor fan not working
E26Return air temp sensor fault
E27Supply air temp sensor malfunction
E28Fan under extreme load
E29Compressor 1 overloading
E30Compressor 2 overloading
E31Low pressure compressor 1
E32Low pressure compressor 2
E33Low pressure compressor 3
E34High pressure compressor 1
E35High pressure compressor 2
E36High pressure compressor 3
E37Compressor 1 low-pressure lockout
E38Compressor 2 low-pressure lockout
E39Compressor 3 low-pressure lockout
E40Compressor 1 high-pressure lockout
E41Compressor 2 high-pressure lockout
E42Compressor 3 high-pressure lockout
E43Discharge sensor 1 malfunction
E44Discharge sensor 2 malfunction
E45Discharge sensor 3 malfunction

Official Actron source / manual ↗

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