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TheAChub
Code Text Description Cause Check Procedure 4124 Thermal switch (49c) open circuit on Mr Slim on M-Net. Low refrigearnt charge, reduced airflow, faulty 49c switch. Reset and check pressures and airflow, check continuity of 49c. Error Code 4124
1. Error code definition
Electric system not operate due to damper abnormality
2. Error definition and error detection method
When the damper is not located at the designated position.
3. Cause, check method and remedy
When the damper is not located at the designated position.
1) Check there is something that interferes the opening or closing movement of the damper.
2) If damper does not open or close, turn OFF the power supply and measure the resistance of the damper lock motors (ML1,
ML2) and the damper motor (MV2).
The resistance value is normal each. →Replace the indoor electronic control P.C. board.
The resistance value is not normal each. →Replace the motor that indicates the abnormal value
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