Samsung Air Conditioner Error Code E108

E108 indicates a network address conflict in a Samsung multi-unit air conditioning system. Two or more devices on the same communication network have been assigned the same address, causing repeated setting conflicts. The system cannot properly communicate with individual units until each device is given a unique address and the system is reset.

A reset alone will not permanently clear E108 if the underlying address conflict is still present. The duplicate address must be corrected first, and then the system reset will allow normal operation to resume. Resetting without changing the conflicting address will cause the error to return immediately or shortly after restart.

If the fix only requires reconfiguring address settings, the cost is typically limited to a service call fee, which can range from roughly $75 to $200 depending on your location and technician. If a control board was incorrectly installed and needs to be replaced with the right configuration, parts and labor together can range from $150 to $500 or more. In many cases this is a configuration issue that does not require any new parts.

To fix E108, identify which devices share duplicate addresses and change one of them to an unused address. After correcting the address settings on all conflicting units, perform a full system reset to clear the fault and restore normal network communication. If you are unsure which units are conflicting, power down units one at a time to isolate the source of the duplicate address.

E108 is a communication and configuration fault, not a safety hazard in the traditional sense. It does not indicate a refrigerant leak, electrical fault, or fire risk. However, it can prevent the system from operating correctly or responding to commands, so it should be resolved before relying on the system for comfort or climate control.