Samsung Air Conditioner Error Code E801

E801 indicates an EEPROM communication failure on the main control PCB. Specifically, the EEPROM memory chip and the MICOM microcomputer have lost the ability to communicate with each other. This prevents the system from reading its stored configuration and operating parameters, so the unit shuts down and displays the fault code.

No. When E801 is active, the unit typically stops operating because the MICOM cannot read the configuration data it needs to control the system safely. Attempting to force the unit to run in this condition is not advisable, as the controller lacks the parameters required for safe operation. The system should remain off until the PCB is replaced.

No, a power cycle or factory reset will not clear the E801 error. This fault is caused by a hardware communication failure between the EEPROM and MICOM on the main PCB, not a temporary software issue. The error will return immediately upon restart because the underlying hardware problem is still present. PCB replacement is the required corrective action.

In most cases, no. The E801 error points to a hardware failure on the main PCB involving the EEPROM chip or its communication pathway to the MICOM. These are surface-mounted components integrated onto the board, and the recommended repair is full PCB replacement. There is no software reset or user-accessible adjustment that will resolve this fault.

Repair costs depend on the specific model and labor rates in your area, but you can generally expect to pay for both the replacement main PCB and a service call. PCB assemblies for Samsung air conditioners typically range from $100 to $350 or more for the part alone, with total repair costs including labor often falling between $200 and $550. Getting a quote from a Samsung-authorized service provider is recommended.