Lo
Hisense
Temperature Sensor Open Circuit
Display shows Lo or a very low temperature reading, but the compartment is warm.
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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
Cut or broken sensor wires, failed thermistor internally, loose connection at main control board
How to Fix / Troubleshooting
Safety: Disconnect power before working with sensors or the control board.
This usually indicates a temperature sensor has failed in an open-circuit state (infinite resistance), making the board think the fridge is extremely cold.
- 1. Locate the sensor: Identify the sensor for the compartment showing the error.
- 2. Inspect wiring: Look for cut or disconnected wires leading to the sensor.
- 3. Test resistance: Measure the sensor resistance with a multimeter. If it shows open (no continuity) or extremely high resistance compared to the thermistor chart, replace it.
- 4. Replace sensor: Splice in a new OEM Hisense thermistor, ensuring waterproof connections if inside the fridge liner.
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Video Guide
Repair Difficulty
Hard
4/5
Required Part
Thermistor (Compartment Sensor)
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