Samsung Air Conditioner Error Code E364

E364 indicates an over-current fault on inverter compressor 2. The system detected that the current drawn by the second compressor exceeded safe operating limits and shut down to prevent damage. The fault involves the compressor itself, its inverter drive module, or supporting systems such as refrigerant charge and airflow. A technician will need to diagnose which component is responsible before the unit can be returned to service.

No, the unit should not be operated while this fault is active. The over-current condition indicates the compressor or its drive electronics are under abnormal stress, and continued operation could result in permanent compressor failure or damage to the inverter module. The system has shut down as a protective measure, and that protection should be respected until the root cause is resolved.

A power cycle may temporarily clear the fault and allow the unit to attempt operation again, but if the underlying cause is still present, the error will return quickly. Resetting without addressing the root cause risks additional damage to the compressor or inverter components. A reset can be useful as part of a diagnostic process to observe fault behavior, but it is not a repair solution.

Most causes of E364 require professional diagnosis and repair. Checking for obvious issues like a blocked condenser coil or debris restricting airflow is something a homeowner can do safely, but testing compressor windings, measuring inverter output, and handling refrigerant all require specialized tools and certifications. Attempting repairs on high-voltage inverter components without proper training is dangerous.

Repair costs vary widely depending on the root cause. If the fault is caused by a dirty condenser coil or low refrigerant requiring a recharge, costs may range from a modest service call fee to a few hundred dollars. If the inverter module or compressor 2 requires replacement, costs can range from several hundred to over a thousand dollars depending on the unit size and part pricing. A technician diagnosis is the first step to getting an accurate estimate.