Amana Range Error Code F3: Troubleshooting Oven... | appliancefaults.com

Technical Background:

The Amana range's electronic oven control (EOC) monitors the oven temperature using an RTD or Thermistor sensor. The sensor's resistance changes with temperature. The EOC supplies a small DC voltage (typically 5V DC) to the sensor circuit and measures the voltage drop across the sensor. An F3 error code indicates that the EOC is not detecting the correct resistance range, signaling an open circuit or a sensor failure.

Symptoms:

The homeowner reports that the oven is not heating, and the display shows an error code F3. The oven may shut down automatically after displaying the error. Baking and broiling functions are non-operational.

Possible Causes:

Faulty oven temperature sensor (RTD/Thermistor)
Wiring harness damage between the sensor and the control board
Loose or corroded connections at the sensor or control board
Defective electronic oven control (EOC) board
Incorrect sensor type installed (if recently replaced)
Open circuit in the sensor itself.

Solution:

1

Disconnect power to the range at the breaker panel.
2

Locate the oven temperature sensor (RTD/Thermistor) inside the oven cavity, usually at the rear.
3

Disconnect the sensor wiring harness.
4

Using a multimeter set to Ohms, measure the resistance of the sensor. A typical RTD sensor should read around 1000-1100 Ohms at room temperature (70-75°F). Consult the service manual for the specific resistance value. If using a Thermistor, readings will vary more widely.
5

Inspect the wiring harness and connections for any signs of damage, corrosion, or loose connections. Repair or replace as needed. Use a wire brush to clean corroded terminals.
6

If the sensor resistance is significantly outside the specified range or reads infinite (open circuit), replace the oven temperature sensor with a new one of the correct type.
7

Reconnect the sensor wiring harness, restore power to the range, and test the oven to ensure the F3 error code is cleared and the oven heats properly. Check the bake and broil functions.

Safety Warning:

Always disconnect power to the appliance 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. High voltage is present within the range, even with the power switch off.

Prevention:

Regularly inspect the oven temperature sensor wiring and connections for any signs of damage or corrosion. Avoid excessive moisture or spills inside the oven, as this can contribute to corrosion. Periodically run a self-clean cycle to prevent buildup and maintain proper temperature regulation.

Expert Tip:

Some Amana ranges have a service mode that allows you to view the raw sensor data and monitor the oven temperature in real-time. Consult the service manual for the specific key sequence to enter service mode. This can help pinpoint intermittent sensor issues.

Frequently Asked Questions

•What is the correct resistance range for the oven temperature sensor on my specific Amana range model?

The correct resistance range can be found in the service manual for your specific Amana range model. You can usually find this information online by searching for the model number and 'service manual'.

•How do I access the wiring harness and connections at the electronic oven control (EOC) board?

Accessing the EOC board usually involves removing the back panel of the range. Disconnect power first. Be careful when handling the board and wires, as they can be fragile. Check the connections carefully for any signs of corrosion or damage.

•If the sensor and wiring are good, is it likely the EOC board is faulty?

Yes, if the sensor tests within the correct range and the wiring is intact, a faulty EOC board is the most likely remaining cause. However, it's still recommended to double-check all connections before replacing the board, as loose or corroded connections can sometimes mimic a faulty board.

Amana Range Error Code F3: Troubleshooting Oven Temperature Sensor Open Circuit

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip:

Frequently Asked Questions

•What is the correct resistance range for the oven temperature sensor on my specific Amana range model?

•How do I access the wiring harness and connections at the electronic oven control (EOC) board?

•If the sensor and wiring are good, is it likely the EOC board is faulty?

Related questions

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip: