Kenmore Refrigerator Er rt Error — Ambient Temperature Sensor
The Er rt error code relates to the ambient (room temperature) sensor on select Kenmore refrigerator models. Some advanced Kenmore models use a room temperature sensor to adjust cooling performance based on the ambient environment — working harder in a hot kitchen and conserving energy in a cool basement.
Effect on Performance
When the ambient sensor fails, the refrigerator defaults to a fixed cooling algorithm rather than adapting to room temperature. In most cases this causes no dramatic performance change, but in very hot or cold environments, it may result in energy inefficiency or minor temperature variance.
Resolution
The ambient sensor is typically located near the control panel area. Our technicians identify and replace the specific sensor for your model, restoring full adaptive cooling functionality.