Frigidaire Refrigerator Error Code SH in refrigerator temperature display

If your Frigidaire refrigerator displays the error code SH on the refrigerator temperature display, it indicates a potential issue with the refrigerator temperature sensor.

Here’s a step-by-step guide to troubleshoot and resolve this error:

1. Unplug the Refrigerator: Start by disconnecting the refrigerator from the power source to ensure safety during the troubleshooting process.
2. Locate and Disconnect the Temperature Sensor: Identify the refrigerator temperature sensor and disconnect it from its wire harness. This sensor is crucial for accurately detecting and maintaining the internal temperature of the refrigerator.
3. Measure Sensor Resistance: Utilize a multimeter to measure the resistance of the temperature sensor. The expected resistance values vary with temperature:
   • 28,300 ohms at 37 degrees
   • 32,566 ohms at 32 degrees
   • 11,304 ohms at 72 degrees (room temperature)

   If the multimeter records a resistance of less than 10 ohms, it indicates a shorted sensor, and replacement is recommended.

4. Check Sensor Wiring: Reconnect the temperature sensor and measure the resistance through the refrigerator temperature sensor wires that connect to the electronic control board (gray/black wires on the J4A connector). Unplug the J4A connector from the control board and measure resistance through the gray/black wires. The meter should display the same resistance as measured for the temperature sensor.
5. Evaluate Control Board: If correct sensor resistance is observed through the wires, the electronic control board might be malfunctioning. Replace the electronic control board if it fails to accurately detect sensor resistance, as this is crucial for proper temperature regulation.
6. Inspect Sensor Wiring: In the event that the multimeter measures less than 10 ohms of resistance through the sensor wires, there may be a wiring failure. Identify and repair any issues with the sensor wiring to ensure proper functionality.

By following these steps, you can effectively troubleshoot and address the Frigidaire Refrigerator Error Code SH related to the refrigerator temperature sensor. Regular maintenance and timely replacement of faulty components will help keep your refrigerator running smoothly.