Maytag Microwave F8 Error: Temperature probe fault
What Does Maytag Microwave Error Code F8 Mean? F8 on a Maytag microwave indicates a temperature probe fault. This code applies to Maytag combination microwave-oven and convection microwave models that include a food temperature probe for precise cooking — it does not appear on standard microwave-only units. The board monitors the probe circuit continuously during […]
Quick Assessment
Answer to continue safely
Is it safe to keep using?
Yes. The Maytag combination microwave is fully safe and functional for all standard microwave and convection programs. Only temperature probe-based cooking modes are affected by F8.
Can I reset the code?
Yes. F8 clears automatically when the probe is connected correctly or when a non-probe cooking program is selected. A defective jack requires professional repair but does not affect other cooking modes.
When to stop immediately?
Stop if you notice: F8 appears during all cooking modes, not just probe programs, Additional fault codes appear alongside F8.
Symptoms You May Notice
Probe cooking fails to start
Selecting a temperature probe or probe cook program produces no response — the microwave will not begin the cycle.
Probe-based programs cancelled mid-cycle
A probe cooking program that was running stops unexpectedly and displays F8, indicating the probe connection was lost mid-cook — often because the probe jack was nudged while food was being moved.
F8 during a non-probe cycle on combination models
Occasionally F8 appears during a standard microwave cycle when no probe is in use. This points to a shorted probe jack connector rather than the probe itself causing an unexpected input signal.
Standard heating works fine
Time-based microwave and convection programs heat food normally without any issue.
Possible Causes
Temperature probe not connected to jack
The probe jack inside the cavity is empty but a probe cook program has been selected. This is the most common cause and requires no repair — insert the probe or switch to a non-probe cooking mode.
DIY PossibleFailed or damaged temperature probe
The probe itself has failed — typically because it was immersed in liquid, dropped, or its cable has been damaged. The internal thermistor reads out of range and the board flags F8.
DIY PossibleDefective probe jack connector inside the cavity
The probe receptacle mounted inside the Maytag combination microwave cavity has corroded contacts, food contamination, or a broken internal pin. This produces F8 even when no probe is inserted.
Requires ProfessionalSafe Checks You Can Do
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1
Verify probe connection and use non-probe modes
If you intended to use the food probe, ensure it is fully inserted into the probe jack inside the cavity. If F8 appears during a non-probe program, switch to Time Cook or a standard convection program, which do not use the probe jack at all.
On Maytag combination models, the probe jack is usually on the right side wall of the cavity. Inspect the jack contacts for visible food debris and clean gently with a dry cotton swab if contaminated.
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2
Test with a known-good probe
If a replacement probe is available, plug it in and test the probe cook program. If F8 clears with the new probe, the original probe has failed and needs replacement. If F8 persists with a known-good probe, the jack connector is defective.
Maytag food probe part numbers vary between combination oven models — have the full model number ready when ordering a replacement.
When to Call a Professional
Contact a qualified technician if:
- Probe jack replacement restores probe cooking function
- Jack contact resistance is out of spec with a known-good probe fully inserted
- Probe jack shows visible corrosion, carbon deposits, or physical damage
Need Professional Help?
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