Carrier A/C Error Codes

Carrier Error CodeWhat this means
Solid on, one flash, and two flashesNormal operation
Error Code 16System communication failure
Error Codes 31 and 84High-pressure problem
Error Codes 32 and 83Low-pressure problem
Error Code 45Fault with the control board
Error Codes 46, 47, 73, 74, 75, 76, 77, 78, 85, and 87Voltage problems
Error Code 53Fault with the outdoor temperature sensor
Error Code 55Problem with the coil


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