Kenmore Microwave Error F1
⚡ Quick Answer: The Kenmore microwave F1 error indicates a malfunction in the control system, commonly linked to a faulty thermistor or temperature sensor. This failu... ✅ DIY Fixable
What Does Error F1 Mean?
The Kenmore microwave F1 error indicates a malfunction in the control system, commonly linked to a faulty thermistor or temperature sensor. This failure may result in unresponsive buttons and prevent the microwave from heating food properly. The error can appear at startup or during cooking, signaling that the microwave requires attention to restore its functionality.
Common Symptoms:
- Microwave displays "F1" on the control panel
- Microwave may not heat food
- Error appears on startup or during attempted cooking
Possible Causes
- Open or failed thermistor / temperature sensor (medium)
How to Fix Error F1
DIY Fix Power cycle and basic reset
- Unplug the microwave from the electrical outlet.
- Wait for 2–5 minutes to allow internal capacitors to discharge.
- Plug the microwave back in and check if the F1 code clears.
Technician Only Inspect and test thermistor / temperature sensor
- Disconnect power to the microwave.
- Access the internal thermistor or temperature sensing component per the service manual.
- Use a multimeter to check resistance of the thermistor; confirm expected resistance at room temperature per model specification.
- Replace thermistor if open or out of specification.
- Reassemble and power test to verify error resolution.
Parts needed: Thermistor / temperature sensor, Multimeter for diagnostics
- If the error persists after basic reset and sensor inspection
- If you are not confident working inside a microwave
- If the thermistor tests within specification but error remains
Next step
Choose the next step for F1
Confirm the diagnosis before ordering. An error code can identify the system involved, but it does not prove that a specific part has failed.
Most relevant component to inspect
Thermistor
Measures precise temperature changes and sends resistance feedback to the control board.
- Typical part-only price
- $15 - $35
- DIY difficulty
- Easy
- Estimated time
- 15-30 mins
Where can I find the model number?
Check the rating label around the door, lid, frame, rear panel, or inside the appliance cabinet. Use the complete model number, including suffixes.
Verify the complete model and part number on the retailer's compatibility page before ordering.
Other parts options
Check related components first; use model search as a fallback.
Temperature Sensor
Monitors the internal temperature to ensure correct operation and prevent overheating.
Model-compatible Microwave parts
Enter the complete model number to browse compatible replacement parts. This is a model-based parts search, not a diagnosis that a specific component failed.
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Technical Specifications
| wattage | 1000W |
|---|---|
| component | Control Board |
| resistance | N/A |
| part_number | WB27X10929 |
| voltage_rating | 120V AC |
Common Questions
What does F1 error mean on kenmore microwave?
The F1 error means there's a malfunction in the control system, often due to a faulty thermistor.
Can I fix kenmore microwave F1 error myself?
Yes, you can attempt a basic reset by unplugging the microwave and waiting a few minutes.
How much does it cost to fix F1 error?
Repair costs for the F1 error are low to medium, as replacement parts for the thermistor are generally inexpensive.
When should I call a technician for F1?
Call a technician if the error persists after a reset or if you're unsure about inspecting internal components.
Sources & References
Data last verified: 2026-07-25
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