Samsung · Home Automation
There is a physical problem with the parts or circuit of the EEPROM (Electrically Erasable Programmable Read-Only Memory) on the Microcontroller (MICOM).
Click steps to track your progress.
Power cycle the unit by turning off its main power for 30 seconds and then turning it back on to attempt a software reset.
Check all power connections to the indoor unit for stability.
If the error persists, professional service is likely required to diagnose or replace the control board.