LG Air Conditioner Error Code E515

The E515 code means the control box, which houses the main circuit board and power components, has overheated beyond its safe operating temperature. The unit shuts down automatically to prevent damage to the electronics. The fault must be diagnosed and the heat source corrected before the unit will resume normal operation.

No, you should not attempt to bypass or ignore the E515 fault. The error indicates the control box temperature has reached an unsafe level, and continued operation risks permanent damage to the circuit board or, in severe cases, an electrical failure. Allow the unit to cool down completely and identify the root cause before restarting.

Repair costs vary depending on the root cause. A service call for diagnosis and minor cleaning typically runs in the range of $75 to $150. Fan motor replacement can cost between $150 and $350 including labor. If the main control board requires replacement, costs generally range from $250 to $600 or more depending on the specific unit model and part availability.

Some causes, such as clearing debris from around the unit or removing physical obstructions blocking airflow, can be handled by a homeowner. However, inspecting the fan motor, testing PCB components, and checking internal wiring connections safely requires working near high-voltage components and is best handled by a qualified HVAC technician. If basic cleaning does not resolve the fault, professional service is recommended.

A power reset may temporarily clear the fault code and allow the unit to restart once the control box cools down, but the error will return if the underlying cause is not corrected. Simply resetting the unit without addressing blocked airflow, a faulty fan, or a failing component is not a permanent fix and can lead to repeated shutdowns or component damage over time.