Amana Oven Error Code F2: Oven Temperature Too High... | appliancefaults.com

Technical Background:

The Amana oven's MCU (Main Control Unit) monitors the oven temperature via the RTD (Resistance Temperature Detector). The RTD's resistance changes with temperature, providing a voltage signal to the MCU. The MCU compares this signal to the set temperature and controls the bake and broil elements accordingly. If the MCU detects a temperature exceeding a pre-set limit, it displays the F2 error code.

Symptoms:

The oven displays error code F2, and the oven temperature is excessively high, even when set to a lower temperature. The oven may overheat and shut down automatically, or it may continue to heat uncontrollably.

Possible Causes:

Faulty oven temperature sensor (RTD).
Defective oven control board (MCU).
Shorted wiring harness between the sensor and the control board.
Stuck relay on the control board continuously powering the bake or broil element.
Excessive voltage supply to the oven (rare).
Calibration error within the control board's software.

Solution:

1

Disconnect power to the oven at the breaker panel. Verify with a non-contact voltage tester.
2

Locate the oven temperature sensor (RTD) inside the oven cavity, typically at the rear. Disconnect the sensor wires from the control board.
3

Using a multimeter, measure the resistance of the RTD at room temperature (approximately 75°F). Consult the Amana service manual for the correct resistance value. Typically, it will be around 1080 ohms at room temp. If the resistance is significantly off or open, replace the sensor.
4

Inspect the wiring harness between the RTD and the control board for any signs of damage, shorts, or loose connections. Repair or replace as necessary.
5

If the sensor and wiring are good, suspect a faulty oven control board (MCU). Check for 120V AC at the bake and broil element relays on the control board with the oven off. If voltage is present, the relay is likely stuck.
6

Replace the oven control board with a new or known-good board.
7

After replacing the control board, perform an oven calibration if the new board allows. Follow the manufacturer's instructions.

Safety Warning:

Disconnect power to the oven at the breaker panel before attempting any repairs. Lock Out/Tag Out (LOTO) procedures should be followed to prevent accidental energization. Be aware of high voltage present inside the oven control panel.

Prevention:

Periodically inspect the oven temperature sensor and wiring harness for any signs of damage or wear. Avoid using harsh chemicals or abrasive cleaners inside the oven, as they can damage the sensor. Calibrate the oven regularly according to the manufacturer's recommendations.

Expert Tip:

Some Amana ovens have a service mode that allows you to view the raw RTD sensor data and perform calibration. To access service mode, typically you press and hold the 'Bake' and 'Broil' buttons simultaneously for 5 seconds. Consult the service manual for the exact sequence for your model.

Frequently Asked Questions

•What is the typical resistance range for the RTD sensor at different temperatures?

The RTD resistance varies with temperature. At 32°F (0°C), it's around 1000 ohms. At 212°F (100°C), it's approximately 1385 ohms. Refer to the Amana service manual for a detailed temperature/resistance chart.

•How do I calibrate the oven after replacing the control board?

The calibration procedure varies by model. Typically, you enter a service mode by pressing a specific button sequence. Then, you can adjust the offset temperature in degrees Fahrenheit. Consult the service manual for the exact steps and calibration values.

•Where can I find the Amana service manual for my specific model number?

Amana service manuals are often available online through appliance parts retailers or technical document websites. Search using your full model number. Some manufacturers may require professional registration to access these manuals.

Amana Oven Error Code F2: Oven Temperature Too High Troubleshooting

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip:

Frequently Asked Questions

•What is the typical resistance range for the RTD sensor at different temperatures?

•How do I calibrate the oven after replacing the control board?

•Where can I find the Amana service manual for my specific model number?

Related questions

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip: