Frequently Asked Questions
•What is the typical resistance range for a functioning humidity sensor in my GE microwave model?
The specific resistance range depends on your model. Consult the service manual for your specific GE microwave model. Generally, at room temperature (70-75°F), you should expect a resistance between 5k and 20k ohms. A significantly higher or lower reading indicates a problem.
•How do I access the main control board in my GE microwave?
Typically, you need to unplug the microwave and remove the outer case. This usually involves removing screws from the back and sides. Once the case is removed, the control board is usually located behind the control panel. Be extremely careful when handling the control board, as it contains sensitive electronic components.
•If the humidity sensor checks out okay, what other components could cause an F4 error?
If the humidity sensor and wiring are good, the issue is most likely with the main control board (MCU). Less commonly, a faulty temperature sensor could also contribute to the problem, as the MCU uses both humidity and temperature data to control cooking cycles. Check the service manual for your model for specific troubleshooting steps related to other sensors.