Whirlpool Microwave Error Code F3: How to Fix It

Q: What causes Whirlpool microwave error code F3?

Error code F3 is caused by a malfunctioning humidity sensor, which can result from sensor failure, loose connections, excessive moisture buildup, or damage to the sensor's internal components.

Q: Can I still use my microwave with error code F3?

Yes, you can typically still use manual time and power settings, but auto cook features, sensor reheat, and popcorn buttons may not work properly or at all until the humidity sensor is repaired or replaced.

Q: How much does it cost to fix error code F3?

If you replace the humidity sensor yourself, expect to pay $25-50 for the part. Professional repair typically costs $100-200 including parts and labor, depending on your location and service provider.

Q: How do I prevent humidity sensor problems in my Whirlpool microwave?

Keep the interior clean and dry, avoid covering food completely (allow steam to escape), don't slam the door, and ensure proper ventilation around the microwave to prevent excessive moisture buildup.

Q: Is error code F3 covered under Whirlpool warranty?

If your microwave is still under manufacturer warranty (typically 1 year), the humidity sensor replacement should be covered. Check your warranty status and contact Whirlpool customer service for authorized repair options.

Abstract

The F3 error code on your Whirlpool microwave indicates a problem with the humidity sensor, which monitors moisture levels during cooking cycles. This sensor helps the microwave automatically adjust cooking times and power levels, but when it malfunctions, it can cause cooking issues and display this error.