Try the solutions suggested here first in order to avoid the cost of an unnecessary service call.
Nothing will operate
Has a household fuse blown, or has a circuit breaker
Replace the fuse or reset the circuit breaker. If the problem
continues, call an electrician.
Is the microwave oven wired properly?
See Installation Instructions provided with your microwave
Microwave oven will not operate
Is the magnetron working properly?
Try to heat 1 cup (250 mL) of cold water for 2 minutes at
100% cooking power. If water does not heat, try the steps
below. If microwave oven still does not operate, call for
service. See "Assistance or Service" section.
Is the door completely closed?
Firmly close door.
Has the microwave oven been inactive and the door
closed for more than 5 minutes?
Open and close the door. See "Start" section.
Is a spacer (on some models) attached to the inside of the
Remove spacer, then firmly close door.
Is the electronic microwave oven control set correctly?
See "Microwave Oven Control" section.
Is the Control Lock set?
See "Control Lock" section.
Is the Learning Mode activated?
See "Learning Mode" section.
Does the display show a message about opening the
The door has been closed for an extended period of time
(about 5 minutes) after placing food and before starting the
microwave oven. Open and close the door, then start the
Microwave oven door looks wavy
This is normal and will not affect performance.
Turntable will not operate
Is the turntable properly in place?
Make sure turntable is correct side up and is sitting securely
on the turntable support.
Is the turntable support operating properly?
Remove turntable. Remove and clean turntable support and
rollers. Replace turntable support. Replace turntable. Place
1 cup (250 mL) of water on turntable, then restart microwave
oven. If it still is not working, call for service. See "Assistance
or Service" section. Do not operate the microwave oven
without turntable and turntable support working properly.
Turntable alternates rotation directions
This is normal and depends on motor rotation at the
beginning of the cycle.
Display shows time countdown, but is not operating
Is the Timer in use?
See "Timer" section.
Is the Learning Mode in use?
See "Learning Mode" section.
Steam is coming from the vent screen
Some steam is normal.
Fan running slower than usual
Has the microwave oven been stored in a cold area?
The fan will run slower until the microwave oven warms up to
normal room temperature.
Fan running during cooktop usage
This is normal. The microwave oven's cooling fan, which is
separate from the vent fan, automatically comes on during
microwave oven operation to cool the microwave oven. Both
the vent fan and the cooling fan may also automatically come
on and cycle on and off to cool the microwave oven's
controls while the cooktop below is being used.
Cooking times seem too long
Is the cooking power set properly?
See "Microwave Cooking Power" section.
Are large amounts of food being heated?
Larger amounts of food need longer cooking times.
Is the incoming voltage less than specified in "Microwave
Hood Combination Safety?"
Have a qualified electrician check the electrical system in the
Radio, TV or cordless phone interference
Is the microwave oven plugged into the same outlet?
Try a different outlet.
Is the radio or TV receiver near the microwave oven?
Move the receiver away from the microwave oven, or adjust
the radio or TV antenna.
Are the microwave oven door and sealing surfaces clean?
Make sure these areas are clean.
Is the cordless phone frequency 2.4 GHz?
Some 2.4 GHz-based cordless phones and home wireless
networks may experience static or noise while the microwave
oven is on. Use a corded phone or a different frequency
cordless phone, or avoid using these items during microwave