Microwave troubleshooting guides
Reviewed microwave troubleshooting for no-power and no-heat symptoms with strict high-voltage safety stopping points.
Start with the exact model number when you can find it. If an error code is displayed, use the code exactly as shown; if there is no code, choose the closest reviewed symptom. Appliance Verdict follows explicit branches from reviewed source material and stops instead of inventing an answer when coverage ends.
Run the interactive diagnostic
Current reviewed coverage
Reviewed codes or display messages include: -SE-, 888, 8888, C-10, C-11, C-12, C-20, C-21, C-22, C-70, C-71, C-72, C-F0, C-F1, C-F2, C-d0, C-d1, C-d2 …
Reviewed symptoms include: Microwave has no power / display is dead, Microwave runs but does not heat, No power / display is off, No power / turns off during use, Runs but does not heat, Microwave runs but food does not heat, Runs but food does not heat properly, Will not turn on / turns off by itself
Microwave error codes
15 reviewed diagnostic families in this appliance category include manufacturer-documented error codes or display messages. Use the code exactly as shown—including letters, numbers, and spacing—because similar-looking codes can mean different things on different brands.
Start with a common problem
These symptom pages compare the reviewed manufacturer paths across supported brands before you choose the exact brand-specific diagnostic.
Amana microwave guides
Bosch microwave guides
Electrolux microwave guides
Frigidaire microwave guides
GE Appliances microwave guides
Haier microwave guides
KitchenAid microwave guides
LG microwave guides
Maytag microwave guides
Samsung microwave guides
Whirlpool microwave guides
Safety boundary
Microwaves can retain dangerous high voltage even after they are unplugged. Appliance Verdict limits guidance to safe external checks and does not direct homeowners to remove the cabinet or test internal high-voltage components.
Manufacturer documentation for the exact model takes priority over general guidance. Appliance Verdict also checks public CPSC recall information when a model number is supplied and treats a potential match as a safety gate that should be reviewed before troubleshooting continues.
How these guides are built
Each guide is generated from the same structured diagnostic family used by the interactive tool. Manufacturer support is the preferred evidence layer, source records carry review dates, and model-specific part compatibility is kept separate from diagnosis so a compatible part is never presented as proof that it failed.