Samsung Air Conditioner Error Code E484

E484 indicates an Over Temperature Protection fault, meaning the system detected that a critical internal component reached an unsafe temperature and shut down to prevent damage. This is a protective safety response rather than a component failure in itself. The underlying cause of the overheating must be identified and corrected before the unit can resume normal operation.

No, the unit should not be forced to run while this fault is active. The E484 code means the system has already reached a temperature that triggered its built-in safety limit. Bypassing or repeatedly resetting the fault without resolving the cause risks permanent damage to the compressor, inverter board, or other high-cost components.

Clearing the code will allow the unit to restart, but it will not fix the underlying problem that caused the overheating. If the cause is not addressed, such as dirty coils, a failing fan, or low refrigerant, the unit will overheat again and trigger E484 repeatedly. A proper diagnosis of airflow, refrigerant charge, and component condition is required for a lasting repair.

You can attempt a reset by powering the unit off at the breaker for several minutes, allowing components to cool, and then restarting. However, if the root cause of the overheating has not been addressed, the error will return quickly. A reset alone is not a fix, and repeated thermal shutdowns can cause cumulative damage to the compressor and electronics.

Repair costs vary widely depending on the root cause. Cleaning blocked condenser coils is relatively inexpensive, typically in the range of $75 to $200 for a professional service call. Refrigerant recharge can cost $150 to $400 depending on the type and amount of refrigerant needed. Inverter board or fan motor replacement can range from $300 to $800 or more including parts and labor.