Whirlpool French Door Refrigerator Error Code F3 E2:... | appliancefaults.com

Technical Background:

The F3 E2 error code indicates the main control unit (MCU) has detected an open circuit or out-of-range resistance value in the freezer temperature sensor circuit. The MCU relies on the sensor's input voltage, derived from a voltage divider circuit, to regulate the freezer temperature. An open circuit prevents proper voltage feedback to the MCU.

Symptoms:

The refrigerator's freezer section may not be cooling properly, or the temperature display might show an inaccurate reading. You may notice the F3 E2 error code displayed on the control panel.

Possible Causes:

Failed freezer temperature sensor
Wiring harness disconnection at the sensor or the control board
Damaged wiring within the harness
Faulty main control board (MCU)
Ice buildup around the sensor

Solution:

1

Disconnect power to the refrigerator at the breaker panel.
2

Locate the freezer temperature sensor. It's typically near the evaporator coil housing.
3

Using a multimeter, measure the resistance across the sensor terminals. A normal reading should be within a specified range (consult the service manual for your model – usually around 5k to 10k ohms at room temperature).
4

If the resistance is infinite (open circuit), replace the freezer temperature sensor. Use a 1/4-inch nut driver to remove any mounting screws.
5

Inspect the wiring harness and connectors for any signs of damage or corrosion. Repair or replace as necessary.
6

Check the wiring harness connection to the main control board (MCU). Ensure it's securely connected. Refer to the wiring diagram for proper pin locations.
7

After replacing the sensor and verifying wiring, restore power and monitor the refrigerator for proper operation. Clear the error code by entering diagnostic mode or disconnecting power for 5 minutes. Verify freezer temperature reaches setpoint.

Safety Warning:

Always disconnect power to the appliance before performing any repairs. Use proper lockout/tagout (LOTO) procedures to prevent accidental re-energizing of the circuit. Be aware of potential high voltage (120V AC) when working near the control board.

Prevention:

Regularly defrost the freezer to prevent ice buildup around the sensor. Inspect wiring harnesses for damage during routine maintenance.

Expert Tip:

Many Whirlpool refrigerators have a service diagnostic mode. To enter, press and hold the Freezer Temp Down and Refrigerator Temp Up buttons simultaneously for 3 seconds. This will allow you to view live sensor readings and run diagnostic tests.

Frequently Asked Questions

•What is the typical resistance range for a functional freezer temperature sensor at 70 degrees Fahrenheit?

The resistance typically ranges from 5k to 10k ohms at 70 degrees Fahrenheit, but consult the specific service manual for your model for the precise range.

•How do I access the main control board (MCU) in this Whirlpool French Door refrigerator?

The main control board is usually located at the top, rear of the refrigerator, behind a service panel. Remove the panel screws (usually 5/16-inch) to access it.

•If the sensor and wiring are good, what other components could cause the F3 E2 error?

If the sensor and wiring are verified to be functioning correctly, the main control board (MCU) itself is likely faulty and needs replacement.

Whirlpool French Door Refrigerator Error Code F3 E2: Troubleshooting Guide

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip:

Frequently Asked Questions

•What is the typical resistance range for a functional freezer temperature sensor at 70 degrees Fahrenheit?

•How do I access the main control board (MCU) in this Whirlpool French Door refrigerator?

•If the sensor and wiring are good, what other components could cause the F3 E2 error?

Related questions

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip: