Ge Microwave Error F1

⚡ Quick Answer: The GE microwave F1 error code signals a malfunction in the temperature sensor circuit, preventing the appliance from accurately monitoring internal t... ✅ DIY Fixable

What Does Error F1 Mean?

The GE microwave F1 error code signals a malfunction in the temperature sensor circuit, preventing the appliance from accurately monitoring internal temperature. This may lead to unresponsive buttons or the microwave failing to start a cook cycle. The error often persists even after power resets, indicating a potential open circuit in the thermal sensor or issues with the main control board.

Common Symptoms:

  • Microwave immediately shows F1 on display and may refuse to start a cook cycle.
  • Code persists after simple power interruptions or resets.

Possible Causes

  • Open circuit in temperature sensor (thermal sensor) (high)
  • Faulty main control board misdetecting sensor status (medium)
  • Wiring issue between thermal sensor and control board (medium)

How to Fix Error F1

DIY Fix Perform basic reset and check display behavior

  1. Unplug microwave from power for at least 60 seconds.
  2. Plug the microwave back in and observe if F1 reappears.

Technician Only Test and replace temperature sensor (thermal sensor)

  1. Unplug microwave and discharge high‑voltage components.
  2. Access internal cavity and locate temperature/thermal sensor.
  3. Test sensor resistance with a multimeter to verify continuity and expected resistance values.
  4. Replace temperature sensor if open or outside specification.
  5. Reassemble and test microwave for error recurrence.

Parts needed: Temperature/Thermal Sensor

Technician Only Inspect wiring harness and control board

  1. With power off and unit safe, inspect wiring harness from thermal sensor to main control board for damage or loose connectors.
  2. Repair or replace damaged wiring as needed.
  3. If wiring and sensor are good but F1 persists, test main control board and replace if confirmed faulty.

Parts needed: Wiring harness, Main control board

🛑 When to Call a Pro:
  • If you are not comfortable safely accessing internal microwave components (due to high voltage risks)
  • If initial checks (reset, wiring inspection) do not resolve F1 and further diagnosis is required

Technical Specifications

wattage 1000W
component Control Board
resistance N/A
part_number WB27X10928
voltage_rating 120V AC

Common Questions

What does F1 error mean on GE microwave?

F1 indicates a temperature sensor malfunction, causing unresponsive controls and preventing cooking.

Can I fix GE microwave F1 error myself?

Yes, you can try resetting the microwave by unplugging it for 60 seconds and observing if the error persists.

How much does it cost to fix F1 error?

Repair costs for the F1 error typically range from $20 to $80 for parts (temperature sensor only).

When should I call a technician for F1?

Call a technician if you can't safely access internal components or if initial troubleshooting doesn't resolve the error.

Sources & References

Data last verified: 2026-01-10

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