Samsung error code E101
What it means
Indoor unit communication error.
Possible causes
Open or shorted indoor communication wiring Miswired indoor PCB communication terminals Defective communication circuit on indoor PCB
Suggested fix
Verify indoor unit supply and communication wiring for continuity and correct polarity; if cabling and terminations are correct, test the indoor PCB communication stage and replace the board if confirmed faulty.
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
- 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).
- E123 — Indoor EVAP OUT 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.