GE Microwave F4 Error Code

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What it means

The microwave detected an open humidity sensor.

Try this first

Stop the current cooking operation.
Disconnect power for about 30 seconds.
Restore power.
Check whether F4 returns.

Can I keep using it?⚠ Sensor cooking may be affected

Repair usually required?🔴 Service recommended

If the error keeps returning

If F4 returns after the power reset, GE recommends service.

Official source

Troubleshooting information verified against manufacturer support documentation.

View manufacturer support page →

Safety note:ApplianceSignal provides general troubleshooting information. Always follow the appliance manufacturer's safety instructions and disconnect power when required.

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GE Microwave F4: Quick Answer

What it means: The microwave detected an open humidity sensor.

First thing to check

Stop the current cooking operation.

Can I keep using it?

Sensor cooking may be affected

Repair outlook

Service recommended

If the code remains

If F4 returns after the power reset, GE recommends service.

Model note: Error-code meanings and procedures can vary by model and model year. Confirm the code against the documentation for your exact appliance before replacing parts.

Manufacturer reference: products.geappliances.com