E3
GE
Tank Temperature Sensor Out of Range
GE electric water heater with digital control shows E3 and temperature readings are erratic.
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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 electronic temperature sensor, sensor not fully inserted into well, corroded sensor connector, control board misreading sensor
How to Fix / Troubleshooting
Safety: Turn off power at the breaker.
Steps to address E3:
- Locate sensor: On GE electronic models, the sensor is often inserted into a dry well in the tank or integrated with the thermostat assembly.
- Check seating: Ensure the sensor probe is fully inserted into the well and secured.
- Inspect connector: Reseat the sensor connector at the control board and look for corrosion or bent pins.
- Test sensor: Measure resistance and compare to GE’s temperature/resistance chart. Replace if out of range.
- Control board: If the sensor is good but E3 persists, the control board may need replacement.
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Repair Difficulty
Medium
3/5
Required Part
Electronic Temperature Sensor
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