Samsung Air Conditioner Error Code E571

E571 indicates an EEPROM READ/WRITE error on the inverter control board. The inverter board contains a small memory chip that stores operational settings, and when the system cannot read from or write to that chip, it triggers this fault code. The air conditioner will typically stop running the compressor until the issue is resolved.

Basic steps like resetting the unit by cutting power for several minutes are safe for homeowners to try. Beyond that, diagnosing and replacing the inverter control board involves working with high-voltage components inside the outdoor unit and should be handled by a qualified HVAC technician. Improper handling of inverter boards carries a serious risk of electric shock.

Repair costs depend on whether the fault can be cleared with a reset or requires an inverter PCB replacement. Inverter control board replacements typically range from $150 to $450 or more for parts alone, with labor adding additional cost depending on the technician and region. Getting a diagnostic visit from a certified technician before ordering parts is recommended to confirm the inverter board is the actual failed component.

A power reset may temporarily clear the E571 code if the error was caused by a one-time power fluctuation that corrupted the EEPROM during a write cycle. However, if the fault returns after restarting, the inverter board has a deeper hardware issue that will not resolve on its own. Persistent E571 errors after resetting indicate the inverter PCB likely needs replacement.

In most cases the unit will disable compressor operation automatically when E571 is active, so forced continued use is unlikely. Attempting to override or ignore the fault without diagnosis is not recommended, as a failing inverter board can cause further damage to connected components. Have a technician inspect the system promptly.