Humming noise during operation:
It is normal for the unit to produce a humming noise during operation. The humming noise is the result of the power supply switching the magnetron on and off.
Humming noise from fan:
It is normal for the unit to produce a humming noise while the microwave oven's cooling fan (on some models) is on.
- 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.
- It may also automatically come on and cycle on and off to cool the microwave oven's controls while the cooktop below is being used.
The fan may run for up to 10 minutes to cool the microwave oven.
Is the turntable properly installed and operating properly?
A thumping or rumbling sound may occur in the microwave oven if the turntable is not installed correctly or if the support roller assembly is not operating properly.
The turntable can rotate in either direction to help cook food more evenly. Do not operate the microwave oven without having the turntable in place.
CLICK HERE for more information on installing the microwave turntable
Are you experiencing static on your landline cordless phone?
Some 2.4 GHz-based cordless phones and home wireless networks may experience static or noise while the microwave oven is in use. Use a corded phone, a different frequency cordless phone or avoid using these items during microwave oven operation.
Are you experiencing static or noise on your TV or radio while the microwave oven is in use?
Some TV receivers and radios may experience static or noise while the microwave oven is in use. Move the receiver away from the microwave oven or adjust the radio or TV antenna.
Still need help?
In the event you need service, please call 1-800-JENN-AIR (536-6247) to arrange for an authorized servicer to perform repairs.