H2
GE
Low Temperature or Sensor Out-of-Range Fault
GE ice maker displays H2 and may shut down due to excessively low temperature or sensor error.
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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
Evaporator thermistor out of calibration, Control board misreading sensor, Thermistor shorted, Unit operating in ambient below design temperature
How to Fix / Troubleshooting
Safety first: Disconnect power before accessing sensors or the control board.
- Check installation environment: Ensure the ice maker is not installed in an unheated garage or outdoors where ambient temperature drops below GE's specified range.
- Inspect evaporator thermistor: Verify it is properly attached to the evaporator and not encased in heavy ice.
- Defrost if necessary: If heavy ice buildup is present, allow the unit to fully defrost by turning it off and leaving the door open for several hours. Protect floors from water.
- Replace thermistor: If H2 persists, replace the evaporator thermistor with a GE-approved part.
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Repair Difficulty
Medium
3/5
Required Part
Evaporator Thermistor
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