E2
Hisense
Ambient (Room) Temperature Sensor Fault
Display shows E2 and the refrigerator struggles to maintain set temperature or cycles erratically.
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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 ambient thermistor, Loose or corroded connector at display PCB, Damaged wiring between ambient sensor and control board, Failed control board input
How to Fix / Troubleshooting
Safety: Unplug the refrigerator before removing any control panel or display trims.
- 1. Locate the ambient sensor: On many Hisense models, the ambient sensor is near the front display/control panel or behind a small grille on the cabinet front. Consult the user manual or look for a small vented cover.
- 2. Inspect the sensor and wiring: Remove the cover or display trim carefully. Check the small thermistor and its wiring for damage, corrosion, or disconnection. Reseat the connector.
- 3. Test the sensor: With the sensor disconnected and at room temperature, measure resistance. Compare to typical NTC values (often 5–10 kΩ at 25°C). Replace if open, shorted, or far off spec.
- 4. Check the display/control PCB: Inspect for burnt components, corrosion, or water damage. Ensure the ambient sensor connector is firmly seated on the board.
- 5. Replace faulty parts: If the sensor is bad, install a new Hisense ambient thermistor. If the sensor tests good but E2 remains, the display/control PCB may need replacement.
Note: A faulty ambient sensor can cause incorrect temperature regulation and excessive compressor cycling.
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Repair Difficulty
Medium
3/5
Required Part
Ambient Temperature Sensor
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