Samsung air conditioner error codes
Displayed on the indoor unit or remote when a fault is detected. Always isolate power before inspecting a unit — repairs belong to a qualified technician.
| Code | Meaning | Applies to | |
|---|---|---|---|
| E101 | Indoor unit communication error. | All models | Details |
| E102 | Communication error between indoor and outdoor units. | All models | Details |
| E108 | Duplicate device address error on the communication network. | All models | Details |
| E121 | Indoor room temperature sensor fault. | All models | Details |
| E122 | Indoor EVAP IN temperature sensor error (short or open). | All models | Details |
| E123 | Indoor EVAP OUT temperature sensor error (short or open). | All models | Details |
| E154 | Indoor fan motor or fan system error. | All models | Details |
| E163 | EEPROM option data error on the indoor PCB. | All models | Details |
| E554 | Gas leak detected by the outdoor unit protection logic. | All models | Details |
| E556 | Indoor and outdoor unit capacity mismatch error. | All models | Details |