How to Fix Whirlpool Refrigerator Error Er rS

Error Code: Refrigerator Difficulty: Moderate

Problem: Refrigerator compartment temperature sensor fault – out of range reading

How to Fix Refrigerator Error

1. Unplug refrigerator and remove all food from fresh food compartment.
2. Locate temperature sensor behind rear wall panel in refrigerator section (typically near top center).
3. Remove shelves and unscrew rear wall panel to access sensor wiring harness.
4. Disconnect sensor connector and measure resistance with multimeter at room temperature (77°F/25°C): should read 5kΩ ±5%.
5. Place sensor in glass of ice water (32°F/0°C) – resistance should increase to approximately 15kΩ.
6. Place sensor in warm water (100°F/38°C) – resistance should decrease to approximately
7. 5kΩ.
8. If resistance readings are infinite, zero, or don’t change with temperature, replace sensor WPW
9. Inspect wiring harness between sensor and control board for damage, rodent chewing, or pinched wires near hinge areas.
10. Verify connector pins aren’t corroded or bent.
11. After replacement, reinstall panel and verify temperature display stabilizes within 1 hour of operation.