A malfunction in the freezer sensor, or thermistor, of a Frigidaire refrigerator can be caused by various factors. These include age-related wear and tear, electrical issues such as short circuits, or exposure to extreme conditions that exceed the sensor’s operating range. This sensor plays a crucial role in monitoring and regulating the freezer’s temperature. If it malfunctions, the refrigerator may incorrectly read the internal temperature, leading to the H1 error code. Regular maintenance and timely repairs are essential for preventing these issues. For a detailed explanation of these malfunctions, visit “Exploring the Causes of Freezer Sensor Malfunctions in Frigidaire Refrigerators.”