E3
GE
Ambient / Room Temperature Sensor Fault
Display shows E3 and the wine cooler runs continuously or not at all, with erratic temperature readings.
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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
Failed ambient thermistor, disconnected ambient sensor harness, damaged wiring near control board, faulty main control board
How to Fix / Troubleshooting
Safety: Unplug the unit before servicing.
- Locate ambient sensor: On many GE wine coolers, the ambient thermistor is mounted near the front grille, control panel, or behind the cabinet near the air intake.
- Visual inspection: Check that the sensor is not broken, and that its wires are intact and not chewed, pinched, or corroded.
- Test sensor: Disconnect the ambient thermistor from the control board harness and measure resistance at room temperature. Compare to GE’s thermistor spec. Replace if open, shorted, or out of range.
- Control board: If the sensor tests good, inspect the control board for damage. Replace the board if the E3 code persists with a known-good sensor.
After replacement, clear the code by disconnecting power for 5 minutes, then restore and verify normal operation.
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Repair Difficulty
Medium
3/5
Required Part
Ambient Thermistor
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