Samsung Air Conditioner Error Code E124

E124 indicates an indoor fan motor error, specifically a failure to start or a locked rotor condition. The control board has detected that the indoor fan is not operating correctly and has shut the unit down. The fault can originate from the motor itself, the wiring connecting it to the PCB, or the PCB output circuit.

No. The unit will typically shut itself off when E124 is triggered precisely to prevent damage from the non-functioning fan. Running the system without a working indoor fan risks overheating the PCB, freezing the evaporator coil, and causing additional component failures. Leave the unit off until the fault is diagnosed and repaired.

A power reset may temporarily clear the error code, and the unit might attempt to restart. However, if the underlying fault with the fan motor, wiring, or PCB has not been corrected, the E124 error will return, often immediately on the next start attempt. A reset should only be used as part of the diagnostic process, not as a substitute for identifying and fixing the actual cause.

Some basic checks, such as clearing debris from the fan wheel or reseating loose wiring connectors, can be performed by a careful DIYer with the unit unplugged. However, voltage testing at the PCB output terminal and motor replacement require comfort with electrical diagnostics and disassembly of the indoor unit. If you are not confident working with electrical components, a qualified technician should handle the repair.

Repair costs depend on the root cause. Wiring repairs or connector fixes may cost relatively little in labor, while a replacement indoor fan motor typically adds parts costs in the range of $50 to $200 or more depending on the model. If the PCB is at fault, board replacement can range from $150 to $400 or higher. Diagnostic labor is usually charged separately.