Whirlpool Microwave Error Code F4: How to Fix It

Q: Can I still use my Whirlpool microwave with F4 error code?

Yes, you can still use basic microwave functions like manual time and power settings. However, automatic cooking cycles, sensor reheat, and humidity-based features will not work until the F4 error is resolved.

Q: How much does a Whirlpool microwave humidity sensor cost?

A replacement humidity sensor for Whirlpool microwaves typically costs between $25-60 depending on your specific model. Generic replacement sensors may be less expensive but ensure compatibility with your model number.

Q: What causes F4 error in Whirlpool microwaves?

F4 errors are caused by humidity sensor failure, loose wire connections, moisture damage to the sensor, or age-related component degradation. Steam and grease buildup can also affect sensor operation over time.

Q: How do I reset F4 error on my Whirlpool microwave?

You cannot permanently reset F4 error without fixing the underlying humidity sensor issue. You can temporarily clear the display by unplugging the microwave for 5 minutes, but the error will return when the sensor is needed.

Q: Is F4 error code dangerous on Whirlpool microwaves?

No, F4 error is not dangerous. It's a low-severity error that only affects humidity-sensing features. The microwave remains safe to use for basic heating functions, but automatic cooking programs won't work properly.

Abstract

The F4 error code on your Whirlpool microwave indicates a humidity sensor open circuit problem. This means the humidity sensor is either disconnected, damaged, or has failed completely. While this error won't prevent basic microwave operation, it will disable humidity-based cooking features and automatic cooking cycles.