Microwave oven does not start
Power cord is unplugged, door is open, or cooking time has not been set.
Plug in power cord or check for a blown circuit fuse or a tripped main circuit breaker.
Close oven door.
Set cooking time.
Timer function started.
If the display shows a time counting down but the oven is not cooking, check to see if a Timer function has been started instead of a cooking function.
Oven light does not work
Power cord is unplugged.
Plug in power cord.
Arcing or Sparking
Cookware is not microwave safe, or the oven is being operated while it is empty.
Use microwave-safe cookware. When in doubt, test cookware before use.
Do not operate oven while it is empty.
Wire twist-ties have not been removed from paper or plastic bags, or the metal rack was installed improperly.
Remove wire twist-ties from paper or plastic bags.
Place the rack securely in the four plastic supports.
Incorrect Time of Day
Power interruption.
Reset the time. See Setting the Clock section to reset time of day.
Unevenly Cooked Foods
Cookware is not microwave safe, or cook settings were wrong.
Test cookware to make sure it is microwave safe.
Do not cook without the glass tray.
Turn or stir food while cooking.
Defrost food completely before cooking.
Use correct cook time and power level.
Check position of aluminum strips used to prevent overcooking.
Overcooked Foods
Cooking settings and methods are wrong.
Change cook time or power level.
Undercooked Foods
Cookware is not microwave safe, or cook settings were wrong.
Test that cookware is microwave safe.
Defrost food completely before cooking.
Change cook time or power level.
Make sure that ventilation ports are not blocked.
Improper Defrosting
Cookware is not microwave safe, or cook settings were wrong.
Test that cookware is microwave safe.
Change defrost time or weight.
Turn or stir food during defrost cycle.
Moisture collects on oven window or steam comes from oven vent
This happens when cooking foods high in moisture.
This is normal.