GE Microwave Error Code F1: Food Fire Troubleshooting... | appliancefaults.com

Technical Background:

The F1 error code on a GE microwave usually indicates a problem with the temperature sensor circuit. The MCU (Microcontroller Unit) on the control board monitors the voltage signal from the temperature sensor. If the voltage falls outside the acceptable range, the MCU triggers the F1 fault code, stopping operation to prevent further damage.

Symptoms:

The microwave displays an F1 error code and may stop working. Some users report a burning smell or visible smoke if a food fire occurred previously. The microwave might operate intermittently or not at all.

Possible Causes:

Faulty temperature sensor
Shorted wiring harness
Defective control board
Excessive heat in the cooking cavity
Stuck relay on the control board

Solution:

1

Unplug the microwave from the outlet. Ensure power is disconnected at the breaker panel.
2

Remove the outer case using a 1/4-inch nut driver. Take photos of wiring before disconnecting anything.
3

Locate the temperature sensor, typically near the top of the cooking cavity or near the magnetron.
4

Disconnect the wiring harness from the sensor. Be gentle as connectors can be brittle.
5

Use a multimeter to test the sensor's resistance. It should read approximately 5-10 kOhms at room temperature (70-75°F). Reference the service manual for precise specifications.
6

If the sensor reads open or shorted, replace it with a new, OEM GE temperature sensor.
7

Inspect the wiring harness for any signs of damage or shorts. Repair or replace as needed. Use electrical tape or heat shrink tubing for repairs.

Safety Warning:

Disconnect power to the microwave at the breaker panel before performing any repairs. Microwaves contain high-voltage components that can cause serious injury or death. Capacitor discharge is critical.

Prevention:

Clean the microwave regularly to prevent food buildup and grease accumulation. This helps prevent food fires and overheating. Do not operate the microwave empty for extended periods.

Expert Tip:

After replacing the sensor, enter the service mode (typically by pressing and holding certain buttons simultaneously) to clear the error code from the unit's memory. Consult the service manual for the specific sequence for your model.

Follow-up Questions:

Frequently Asked Questions

•What is the part number for the temperature sensor?

The part number varies by model. Check the model number located inside the microwave door and search for the temperature sensor part number online or through a parts supplier.

•How do I discharge the capacitor?

Use a properly insulated screwdriver with a well-insulated handle to short across the capacitor terminals. Be extremely careful. This can be dangerous.

•Where can I find the service manual for my GE microwave?

Search online using the model number of your microwave followed by 'service manual'. Many manuals are available for free download or purchase.

GE Microwave Error Code F1: Food Fire Troubleshooting Guide

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip:

Frequently Asked Questions

•What is the part number for the temperature sensor?

•How do I discharge the capacitor?

•Where can I find the service manual for my GE microwave?

Related questions

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip: