E1
Hisense
Oven Temperature Sensor Circuit Open
E1 error on display, oven functions disabled or shut down shortly after starting.
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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
Open-circuit oven temperature sensor (NTC probe), Broken sensor wiring harness, Loose sensor connector at main PCB, Failed main control board temperature input
How to Fix / Troubleshooting
Safety: Disconnect power at the breaker before accessing internal components.
- Locate the sensor: Inside the oven cavity, find the thin metal probe (usually at the back wall, upper area). Remove the mounting screws and gently pull the sensor forward.
- Check wiring and connector: Inspect the sensor wires and plug. Ensure the connector is fully seated and wires are not cut or burnt.
- Measure resistance: With a multimeter set to ohms, measure across the sensor terminals. A typical Hisense NTC sensor reads about 1000–1100 Ω at room temperature. If it reads OL (open) or very high resistance, replace the sensor.
- Check harness to PCB: If the sensor tests good, trace the harness back to the main control board. Repair any damaged wiring and reseat the connector on the PCB.
- Replace control board: If wiring and sensor are good but E1 remains, the temperature sensing circuit on the main control board is likely defective and the board should be replaced.
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Repair Difficulty
Medium
3/5
Required Part
Oven Temperature Sensor (NTC Probe)
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