GE Profile Refrigerator Error Code E2: Temperature... | appliancefaults.com

Technical Background:

The E2 error indicates a problem with the temperature sensor circuit, specifically the evaporator thermistor circuit. The main control unit (MCU) monitors the voltage signal from the thermistor. When the MCU detects an open, shorted, or out-of-range voltage, it triggers the E2 error.

Symptoms:

The homeowner reports the refrigerator is not cooling properly, the freezer may be warmer than usual, and the E2 error code is displayed on the control panel.

Possible Causes:

Defective evaporator thermistor
Wiring harness issue (open or short)
Main control board failure
Poor connection at the thermistor or control board connector
Thermistor improperly seated within evaporator fins

Solution:

1

Disconnect power to the refrigerator at the breaker panel.
2

Locate the evaporator thermistor, typically behind the rear panel inside the freezer. This usually requires removing shelves and possibly an ice maker.
3

Inspect the wiring harness connecting the thermistor to the main control board for any signs of damage (cuts, crimps, burns).
4

Use a multimeter to measure the resistance of the thermistor. Refer to the GE service manual for the correct resistance value at the measured temperature. A reading significantly outside the expected range indicates a faulty thermistor.
5

Check the connection at the main control board. Look for corrosion or loose connections. Clean and re-seat the connector.
6

If the wiring and thermistor test good, suspect a faulty main control board. Replacement may be necessary. Refer to the service manual for replacement procedures.
7

Restore power and monitor the refrigerator. If the E2 error persists, the main control board is the likely culprit.

Safety Warning:

Always disconnect power to the refrigerator at the breaker panel before performing any repairs. Lock Out/Tag Out (LOTO) procedures should be followed to prevent accidental re-energizing of the circuit. Some components may carry 120V AC. Use caution when working near electrical components.

Prevention:

Periodically inspect the refrigerator's cooling performance. Keep the condenser coils clean. Ensure proper ventilation around the refrigerator. Avoid overloading the refrigerator with food, which can strain the cooling system.

Expert Tip:

On some GE Profile models, you can access the diagnostic mode by pressing and holding the 'Freezer Temp' and 'Light' buttons simultaneously for 5 seconds. This may provide more detailed error information or allow you to clear the error code after repairs are completed.

Frequently Asked Questions

•Where exactly is the evaporator thermistor located in my GE Profile refrigerator?

The evaporator thermistor is typically located behind the rear panel inside the freezer compartment. You'll need to remove the shelves and potentially the ice maker assembly to access it. It's usually clipped or secured near the evaporator coils.

•What is the correct resistance reading for the evaporator thermistor at room temperature (70°F)?

While the exact resistance varies by model, a typical range for a GE evaporator thermistor at 70°F is between 5,000 and 10,000 ohms. Consult the GE service manual for your specific model for the accurate value.

•If the thermistor and wiring appear to be fine, how can I be sure the main control board is the issue?

If the thermistor tests within specifications and the wiring is intact, the next step is to check the voltage signal coming from the thermistor to the main control board with a multimeter. Compare this reading to what the service manual indicates. If the voltage is incorrect or absent, and the thermistor circuit is confirmed to be working correctly, then the main control board is most likely the cause. As a last resort, try replacing the thermistor and wiring harness before replacing the main board.

GE Profile Refrigerator Error Code E2: Temperature Sensor Failure Troubleshooting

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip:

Frequently Asked Questions

•Where exactly is the evaporator thermistor located in my GE Profile refrigerator?

•What is the correct resistance reading for the evaporator thermistor at room temperature (70°F)?

•If the thermistor and wiring appear to be fine, how can I be sure the main control board is the issue?

Related questions

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip: