White Westinghouse Microwave Error F03

⚡ Quick Answer: The F03 error code on your White Westinghouse Microwave indicates a malfunction, likely in the magnetron, which may cause unusual buzzing sounds or pr... ⚠️ Difficulty Varies

What Does Error F03 Mean?

The F03 error code on your White Westinghouse Microwave indicates a malfunction, likely in the magnetron, which may cause unusual buzzing sounds or prevent the appliance from heating food properly. If the display shows F03, the microwave may not operate as intended, and basic troubleshooting can be attempted before seeking professional help.

Common Symptoms:

  • Display shows F03 and microwave may not operate normally
  • Microwave may stop heating or refuse to start normally

Possible Causes

  • Magnetron

How to Fix Error F03

DIY Fix Basic checks

  1. Unplug the microwave from power
  2. Wait at least 5–10 minutes
  3. Plug back in and power on to see if the error clears

Technician Only Internal diagnostic and repair

  1. Open microwave to access internal components
  2. Check any temperature/thermistor sensors for continuity and proper connection
  3. Inspect wiring harnesses and connectors for damage
  4. Test relevant sensors and control board circuits with a multimeter

Parts needed: temperature sensor/thermistor, wiring harness/connectors, control board (if diagnosed)

🛑 When to Call a Pro:
  • Error persists after simple reset
  • Unusual burning smells, sparking, or smoke
  • Visible internal damage or component failure

Technical Specifications

wattage 1000W
component Magnetron
resistance 0-10 ohms
part_number WB27X10316
voltage_rating 120V AC

Common Questions

What does F03 error mean on White Westinghouse Microwave?

F03 indicates a magnetron malfunction, causing heating issues and unusual sounds.

Can I fix White Westinghouse Microwave F03 error myself?

Yes, try unplugging the microwave for 5–10 minutes to reset it. If the error persists, professional help is recommended.

How much does it cost to fix F03 error?

Repair costs range from $50 to $200+ depending on parts and labor.

When should I call a technician for F03?

Call a technician if the error persists after a reset, or if you notice burning smells, sparking, or visible internal damage.

Data last verified: 2026-04-23

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