H2
Kenmore
Low temperature or sensor calibration error
H2 error appears and the air fryer will not heat properly.
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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
Out-of-spec NTC temperature sensor,Loose sensor mounting,Faulty main control board temperature circuit,Incorrect sensor type installed
How to Fix / Troubleshooting
Safety first: Unplug the unit and let it cool before accessing internal components.
- Verify actual temperature: Place an oven thermometer in the basket, set the air fryer to 400°F (or highest setting), and compare the reading after 10–15 minutes. If the actual temperature is much lower, a sensor or control issue is likely.
- Check sensor mount: Access the cavity sensor and ensure it is firmly attached to the metal surface. A loose sensor can read incorrectly.
- Inspect wiring: Follow the sensor wires to the main control board and verify the connector is secure and not corroded.
- Replace sensor: If readings are erratic or far off, install a new NTC temperature sensor specified for your Kenmore model.
- Control board replacement: If a new sensor does not resolve H2 and the unit still underheats, replace the main control board.
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Repair Difficulty
Medium
3/5
Required Part
NTC Temperature Sensor
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