Hey there! If your Whirlpool microwave is flashing an E22 error code, don’t sweat it too much. This usually means the microwave’s internal temperature sensor is reporting a really low temperature, potentially signaling a problem with how it’s monitoring your food’s cooking environment.
What Triggers This Error?
- Faulty or damaged wiring leading to the temperature sensor.
- An open circuit condition in the sensor’s electrical pathway, indicating a complete break in the connection.
- The temperature sensor (RTD/NTC) itself has failed and is providing an inaccurate low reading or no reading at all.
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Your Step-by-Step Solution
- Safety First: Always unplug your Whirlpool microwave from the power outlet before attempting any inspection or repair to prevent electrical shock.
- Access the Sensor: Depending on your specific Whirlpool microwave model, you may need to remove the outer casing or a specific access panel to locate the temperature sensor, which is often found within the cooking cavity or vent path.
- Inspect Wiring: Carefully examine all wires connected to the temperature sensor. Look for any visible signs of damage, such as cuts, pinches, frayed insulation, or corrosion. Ensure all connectors are securely seated.
- Check for Open Circuit: Using a multimeter, test the continuity of the wiring leading to the sensor. An “open circuit” reading (typically infinite resistance or no continuity) indicates a break in the wire, which must be repaired or the harness replaced.
- Test the Sensor: If the wiring appears intact and continuous, the issue likely lies with the sensor itself. Use your multimeter to test the resistance of the temperature sensor. Compare your reading to the specifications found in your microwave’s service manual (usually found online or with the appliance documentation); a faulty sensor will often show very high resistance, very low resistance, or an open circuit.
- Replace the Sensor: If your diagnostic tests confirm an open circuit in the wiring that cannot be easily repaired, or if the sensor itself tests faulty, replacing the temperature sensor (RTD/NTC) is the next course of action.
- Reassemble and Test: After replacing the sensor and securing all connections, carefully reassemble your microwave. Plug it back in and perform a test run to ensure the E22 error code has cleared and the microwave functions properly.
Need to replace the Temperature Sensor (RTD/NTC)? Check prices here: [REPAIR_LINK]