Ed
Hisense
Defrost Sensor or Defrost Circuit Error (Alternate Code)
Display shows Ed and the refrigerator may not defrost correctly, with frost buildup on the back wall.
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Safety Warning
This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.
If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.
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Possible Causes
Defective defrost sensor, Open defrost heater, Faulty defrost thermostat, Wiring fault in defrost circuit
How to Fix / Troubleshooting
Safety: Unplug the appliance before accessing the freezer rear panel.
- 1. Inspect for frost: If the freezer back wall is heavily frosted, the defrost system is not working properly.
- 2. Access evaporator and defrost components: Remove drawers and the rear panel to expose the evaporator, heater, thermostat, and sensor.
- 3. Test components: Use a multimeter to check continuity of the defrost heater and thermostat. Test the defrost sensor (thermistor) resistance as described for E3.
- 4. Repair wiring: Fix any burnt or broken wires or connectors in the defrost circuit.
- 5. Replace faulty parts: Install new Hisense defrost heater, thermostat, or sensor as needed. Fully defrost the evaporator before reassembly.
Note: If all components test good, the main PCB defrost control may be defective and should be replaced by a technician.
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Repair Difficulty
Hard
4/5
Required Part
Defrost Thermostat
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