Carrier Mini Split Error Codes

16 codes · manual-verified where marked · draft entries clearly flagged

E-codes

Carrier EC07 error code draft
EC07 means the outdoor unit is not seeing outdoor fan speed the way it expects. The system may stop or limit o…
Carrier EC51 error code draft
EC51 means the outdoor control has an EEPROM parameter error. In plain terms, the outdoor board is not accepti…
Carrier EC52 error code draft
EC52 means the outdoor unit is not getting a valid outdoor coil temperature reading. The system needs that rea…
Carrier EC53 error code draft
EC53 means the outdoor unit is not getting a valid outdoor air temperature reading. That reading affects capac…
Carrier EC54 error code draft
EC54 means the outdoor unit is not getting a valid compressor discharge-temperature reading. Because discharge…
Carrier EC56 error code draft
EC56 as the indoor coil outlet temperature sensor error. Technician boundary Stop here: electrical or inverter…

Carrier H00 error code draft
H00 as indoor EEPROM malfunction. Technician boundary Stop here: electrical or inverter work is technician-onl…
Carrier H03 error code draft
H03 as indoor fan speed out of control. Technician boundary Stop here: electrical or inverter work is technici…
Carrier H60 error code draft
H60 as indoor room temperature sensor T1 error. Technician boundary Stop here: electrical or inverter work is …
Carrier H61 error code draft
H61 as indoor coil temperature sensor T2 error. Technician boundary Stop here: electrical or inverter work is …
Carrier H62 error code draft
H62 means the T2B evaporator coil inlet temperature sensor circuit is open or shorted. The indoor unit cannot …
Carrier H65 error code draft
H65 as evaporator coil inlet temperature sensor T2A open/short fault. Technician boundary Stop here: electrica…
Carrier H66 error code draft
H66 with the evaporator coil inlet temperature sensor T2B open/short fault. Technician boundary Stop here: ele…

Carrier L01 error code draft
L01 as indoor/outdoor communication error. Technician boundary Stop here: electrical or inverter work is techn…
Carrier L09 error code draft
L09 as a new/old platform mismatch. Technician boundary Stop here: electrical or inverter work is technician-o…
Carrier L16 error code draft
L16 as communication between the adapter board and outdoor main board. Technician boundary Stop here: electric…