Samsung error code E123
What it means
Indoor EVAP OUT temperature sensor error (short or open).
Possible causes
Evaporator outlet thermistor open or short Sensor wiring damaged Connector not seated on PCB
Suggested fix
Inspect the EVAP OUT sensor wiring and connector and verify resistance against specification; replace the sensor or PCB channel as required after confirming the measurements.
Safety first. Isolate the power supply before inspecting any unit. Refrigerant-circuit
and electrical repairs must be carried out by a qualified, registered technician.
Other Samsung codes
- E101 — Indoor unit communication error.
- E102 — Communication error between indoor and outdoor units.
- E108 — Duplicate device address error on the communication network.
- E121 — Indoor room temperature sensor fault.
- E122 — Indoor EVAP IN temperature sensor error (short or open).
- E154 — Indoor fan motor or fan system error.
- E163 — EEPROM option data error on the indoor PCB.
- E554 — Gas leak detected by the outdoor unit protection logic.
- E556 — Indoor and outdoor unit capacity mismatch error.