Samsung Air Conditioner Error Code E347

E347 means the outdoor unit's second fan motor (Fan2) wire is detected as not connected. The system monitors the wiring to each outdoor fan motor, and this code appears when it cannot confirm a proper electrical connection to Fan2. The unit will typically restrict or stop operation to protect the compressor from overheating due to inadequate condenser airflow.

Running the unit with E347 active is not advisable. If Fan2 is non-functional, the condenser coil will not receive adequate airflow, causing the compressor to operate under high head pressure and thermal stress. This can lead to compressor damage, which is significantly more expensive to repair than fixing a wiring issue. The system may shut itself down automatically, but you should not attempt to bypass this protection.

Repair costs depend on the root cause. If the fix is simply reseating a disconnected connector, labor costs alone may range from around 75 to 150 dollars for a service call. If wiring needs to be repaired or replaced, costs may rise to 150 to 300 dollars. If the Fan2 motor has failed and requires replacement, the total cost including parts and labor can range from 250 to 600 dollars or more depending on the specific model and part availability.

If you are comfortable working around electrical components, you can visually inspect the outdoor unit for an obviously loose or unplugged connector on the Fan2 motor wiring harness. However, diagnosing a broken wire or failed motor requires continuity testing with a multimeter, and accessing internal components of the outdoor unit involves exposure to capacitors that can retain dangerous charge. A qualified technician is recommended for anything beyond a visual connector check.

A reset may temporarily clear the displayed error code, but E347 will return if the underlying wiring issue has not been corrected. The control board will re-detect the open circuit on the Fan2 motor wire each time the system attempts to operate the fan. A permanent resolution requires physically inspecting and repairing the wiring or replacing the affected component.