Samsung · Air Conditioning
This error typically refers to an Over Temperature Protection fault, meaning a component has become too hot and the system has shut down to prevent damage. This might be related to internal firmware or sensor issues.
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Turn off the air conditioner at the main power switch or circuit breaker and wait 30 seconds.
Ensure the outdoor unit is clean and has adequate airflow around it.
Turn the power back on.
If the error persists, contact customer support, as a technician may need to perform internal system checks or updates.