Whirlpool Oven Error Code F3 E1: Temperature Sensor... | appliancefaults.com

Technical Background:

The oven control board (MCU) monitors the oven temperature via the resistance temperature detector (RTD) sensor. The RTD's resistance changes with temperature. The MCU provides a small DC voltage (typically 5V DC) to the RTD, and monitors the voltage drop across it. An F3 E1 error indicates the MCU detects a short circuit in the RTD circuit, meaning the resistance is abnormally low or zero, causing a high voltage reading at the MCU's input pin.

Symptoms:

The oven displays an F3 E1 error code. The oven may not heat properly or may overheat. The self-clean function may not work. The temperature displayed may be inaccurate or fluctuating erratically.

Possible Causes:

Faulty oven temperature sensor (RTD).
Shorted wiring to the RTD sensor.
Damaged wire harness connection at the control board.
Defective oven control board (MCU).
Moisture or debris within the RTD sensor housing.

Solution:

1

Disconnect power to the oven at the breaker panel.
2

Locate the oven temperature sensor (RTD) inside the oven cavity, typically at the rear.
3

Disconnect the RTD sensor wires from the oven control board. It is often a two-wire connector.
4

Using a multimeter, measure the resistance of the RTD sensor. At room temperature (75°F), it should read approximately 1080 ohms. A short circuit (0 ohms) indicates a faulty sensor.
5

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

If the wiring and sensor appear good, replace the oven temperature sensor.
7

If the problem persists after replacing the sensor and checking the wiring, the oven control board may be faulty and require replacement.

Safety Warning:

Always disconnect power to the appliance at the breaker panel before performing any repairs. Lockout/Tagout (LOTO) procedures should be followed to prevent accidental re-energization. High voltage is present inside the oven; exercise extreme caution.

Prevention:

Periodically inspect the oven temperature sensor and wiring for any signs of damage. Avoid using excessive moisture when cleaning the oven interior. Consider replacing the sensor every 5-7 years as preventative maintenance.

Expert Tip:

Some Whirlpool ovens have a diagnostic mode. To enter it, press and hold the Cancel button for 3 seconds, then within 5 seconds press Bake, Broil, Bake. This will display error codes and allow component testing. Use a 1/4-inch nut driver to remove the rear panel for easier access to the control board.

Frequently Asked Questions

•What is the correct part number for the RTD sensor for my specific Whirlpool oven model?

You can find the correct part number by locating the model number of your oven (usually inside the oven door or on the side panel) and searching for replacement parts on the Whirlpool website or a reputable appliance parts supplier. Make sure to enter the full model number for accurate results.

•How do I access the oven control board to check the wiring harness?

To access the oven control board, first disconnect the power. Then, typically you will need to remove the rear panel of the oven. Use a 1/4-inch nut driver or a Phillips head screwdriver. The control board will be mounted inside. Be careful when disconnecting any wires from the board, and take pictures beforehand to ensure proper reassembly.

•If the RTD sensor resistance reading is slightly off (e.g., 1050 ohms at 75°F), should I still replace it?

A slight deviation from the specified resistance (1080 ohms at 75°F) might not immediately warrant replacement. However, if you're experiencing temperature inconsistencies or error codes, it's a good indicator that the sensor is starting to fail. Consider replacing it as a preventative measure to avoid future issues. Monitor the oven's performance closely if you choose to wait.

Whirlpool Oven Error Code F3 E1: Temperature Sensor Troubleshooting

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip:

Frequently Asked Questions

•What is the correct part number for the RTD sensor for my specific Whirlpool oven model?

•How do I access the oven control board to check the wiring harness?

•If the RTD sensor resistance reading is slightly off (e.g., 1050 ohms at 75°F), should I still replace it?

Related questions

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip: