Troubleshooting - KitchenAid KBMC140 Use And Care Manual

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 the circuit breaker
tripped?
Replace the fuse or reset the circuit breaker. If the problem
continues, call an electrician.
Is the appliance wired properly?
See Installation Instructions provided with your microwave
oven.
Microwave oven will not operate
Is the door completely closed?
Firmly close door.
Is the electronic oven control set correctly?
See "Microwave Oven Control Panel" section.
Is the Control Lock set?
See "Control Lock" section.
Is the magnetron working properly?
Heat 1 cup (250 mL) of cold water for 2 minutes at 100%
cooking power. If water does not heat, call for service. See
"Assistance or Service" section.
Microwave oven makes humming noise
This is normal and occurs when the power supply in the
magnetron cycles on.
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 the turntable, then restart
microwave oven. If it is still not working, call for service. See
"Assistance or Service" section. Do not operate the
microwave oven without turntable and turntable support
working properly.
Turntable rotates both directions
This is normal and depends on motor rotation at beginning of
cycle.
18

TROUBLESHOOTING

Display shows messages
Is the display showing an "Oven Status" screen, with a
letter/number code and instruction to inform KitchenAid?
The microwave oven has detected an internal problem. It has
run a self-checking program and displayed the error. Call for
service. See "Assistance or Service" section.
Display shows time countdown, but microwave oven is
not operating
Is the Timer in use?
See "Timer" section.
Tones are not sounding
Are tones turned off?
See "Tones" section.
Smoke is coming from oven vent during broiling
Some smoke is normal and occurs just as in conventional
broiling.
Sparks during broiling
Sparking is caused by the burning off of fat from previous
cooking, and will stop once all the fat has been burned off.
Cooking times seem too long
Is the cooking power set properly?
See "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
Oven Safety"?
Have a qualified electrician check the electrical system in the
home.
Radio or TV 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.