Whirlpool WRF767SDHZ Refrigerator Error Code F2 E3:... | appliancefaults.com

Technical Background:

The F2 E3 error code on a Whirlpool WRF767SDHZ refrigerator typically indicates a communication failure between the user interface (UI) board and the main control board. The main control board uses low voltage DC signals (typically 5V DC) to communicate with the UI and interpret user inputs. The MCU (Microcontroller Unit) on the main board expects specific acknowledgements from the UI. If these acknowledgements are missing or corrupted, the F2 E3 error is triggered.

Symptoms:

The homeowner observes an F2 E3 error code displayed on the refrigerator's user interface. The refrigerator may or may not be cooling properly. The UI may be unresponsive or display erratic behavior.

Possible Causes:

Defective UI (User Interface) board.
Loose or damaged wiring harness connecting the UI to the main control board.
Faulty main control board.
Stuck or shorted key on the user interface panel.
Incorrect voltage supply to the refrigerator.

Solution:

1

Unplug the refrigerator from the wall outlet or turn off the breaker at the breaker panel.
2

Inspect the wiring harness connecting the UI board to the main control board for any signs of damage, loose connections, or corrosion. Repair or replace as needed.
3

Using a multimeter, verify the voltage supply to the refrigerator. It should be approximately 120V AC.
4

Access the main control board (usually located at the rear of the refrigerator). Check for any visible damage or burnt components.
5

If the wiring and voltage are good, replace the UI board. If the issue persists, replace the main control board.
6

After replacing either board, plug the refrigerator back in or turn the breaker on. Monitor for the F2 E3 error code.
7

If the error clears, allow the refrigerator 24 hours to stabilize and ensure proper cooling.

Safety Warning:

Always disconnect power to the refrigerator before performing any repairs. High voltage is present inside the appliance. Lockout/Tagout (LOTO) procedures should be followed to prevent accidental power restoration during service.

Prevention:

Regularly inspect the refrigerator's wiring harness for any signs of wear or damage. Ensure the refrigerator is plugged into a dedicated, properly grounded outlet. Avoid overloading the circuit. Clean the UI panel regularly to prevent stuck keys.

Expert Tip:

After replacing the UI or main control board, it may be necessary to perform a forced defrost cycle to ensure proper operation. Access the service mode (consult the service manual) and initiate the defrost cycle.

Frequently Asked Questions

•How do I access the service mode on this refrigerator model?

Accessing the service mode typically involves pressing a specific sequence of buttons on the user interface within a short timeframe. Consult the service manual for the exact sequence for the WRF767SDHZ. The sequence is often unique to the model and sometimes revision.

•What voltage should I expect to see on the communication wires between the UI and main control board?

Typically, these communication wires carry a low voltage DC signal, usually around 5V DC. Use a multimeter to measure the voltage while the refrigerator is powered on. Expect to see voltage fluctuations as data is transmitted.

•Where is the main control board located on the WRF767SDHZ?

The main control board is usually located at the rear of the refrigerator, behind an access panel. You will likely need a 1/4-inch nut driver to remove the panel screws.

Whirlpool WRF767SDHZ Refrigerator Error Code F2 E3: Troubleshooting & Reset Guide

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip:

Frequently Asked Questions

•How do I access the service mode on this refrigerator model?

•What voltage should I expect to see on the communication wires between the UI and main control board?

•Where is the main control board located on the WRF767SDHZ?

Related questions

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip: