Samsung Air Conditioner Error Code E130

Samsung E130 is a fault code indicating that both the evaporator inlet (EVA IN) and evaporator outlet (EVA OUT) thermistor sensors on the indoor unit have been detected as disconnected at the same time. These two sensors monitor refrigerant temperature at the entry and exit points of the indoor heat exchanger coil. The system uses this data to regulate the refrigeration cycle, prevent freezing, and optimize cooling or heating output. When both sensors lose signal simultaneously, the control board cannot safely manage evaporator operation and triggers E130 to shut down or limit the unit.

The defining characteristic of E130 is the simultaneous detachment of both sensors. If only one sensor were missing or failed, a different fault code would typically appear. The concurrent loss of both signals points strongly toward a physical displacement event rather than individual sensor failure. This commonly occurs after filter cleaning, coil maintenance, or any service procedure that requires accessing the indoor unit's evaporator cavity, where the sensor harnesses can be inadvertently pulled free from their clips or connector ports.

Diagnosing this code begins with a physical inspection of the EVA IN and EVA OUT sensor positions on the heat exchanger. Both sensors should be seated in their designated clips along the coil fins and their wiring connectors firmly attached to the control board harness. If the sensors are found displaced, repositioning and reconnecting them and then clearing the fault is typically sufficient to resolve the error. If the sensors are physically in place but the code persists, inspect the wiring harness for damage and test each sensor for proper resistance to rule out sensor failure.