Question about Whirlpool GH7145XF Microwave Oven

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Exhaust fan When I turn on my exhaust fan on the microwave it creates a loud motor sound, like the one on an electric fan when its having a hard time rotating. The faster the fan the louder the sound.

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William Miller

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  • 9,179 Answers

It sounds like the bearings may be going bad on the fan motor. It's also possible that there may be sonething stuck in the the grlle or fan area, like a paper label, etc. You can find exploded views and order parts here: http://tinyurl.com/gv383 We have critical safety and disassembly help files at our site, which you can find via our listing here: http://tinyurl.com/yzjozk

Posted on Jan 23, 2007

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What is the loud noise?

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Gh5184xps3 microwave

this cause noise ; God bless you

  • MagnetronIf your microwave is emanating high pitched or growling noises during operation, the magnetron could be going bad. Normally a nearly silent part, the magnetron uses high voltage and induces the frequency required to cook food. Although normally not a safety hazard to operate, this is a sign that the magnetron is failing and will need to be replaced as soon as possible.
  • Exhaust fan motorIf your microwave is making a very loud humming noise during operation, it could possibly be the exhaust fan motor. If defective the part will need to be replaced to silence the appliance once more.
  • Stirrer motorAnother leading cause of a noisy microwave is an expired stirrer motor. With use this part becomes worn and makes a loud grinding noise, which is usually a leading indicator that the part needs to be replaced. The stirrer is a metal blade that is slowly turned by the motor. This action disperses the microwave energy in a random pattern, which heats the food evenly. If the stirrer motor is determined to be nearing expiration, it should be replaced to halt the grinding noise.
  • Turntable motorA very common cause for a noisy microwave is a worn out turntable motor. This is a relatively easy repair and will put an end to the noise once replace

  • Read more: http://www.appliancepartspros.com/repair-help/microwave-repair-help.html#13#ixzz2ZPm395lp
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    1. MagnetronIf your microwave is emanating high pitched or growling noises during operation, the magnetron could be going bad. Normally a nearly silent part, the magnetron uses high voltage and induces the frequency required to cook food. Although normally not a safety hazard to operate, this is a sign that the magnetron is failing and will need to be replaced as soon as possible.
    2. Exhaust fan motorIf your microwave is making a very loud humming noise during operation, it could possibly be the exhaust fan motor. If defective the part will need to be replaced to silence the appliance once more.
    3. Stirrer motorAnother leading cause of a noisy microwave is an expired stirrer motor. With use this part becomes worn and makes a loud grinding noise, which is usually a leading indicator that the part needs to be replaced. The stirrer is a metal blade that is slowly turned by the motor. This action disperses the microwave energy in a random pattern, which heats the food evenly. If the stirrer motor is determined to be nearing expiration, it should be replaced to halt the grinding noise.
    4. Turntable motorA very common cause for a noisy microwave is a worn out turntable motor. This is a relatively easy repair and will put an end to the noise once replaced.

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    Magnetron


    If the microwave is loud or noisy only when cooking, the magnetron tube might be defective. The magnetron uses high voltage, high current DC power to generate the microwave frequency that cooks the food. Under normal circumstances the magnetron is nearly silent. However if it is damaged or nearly burned out it can begin emitting high pitched or growling noises. It's not normally dangerous to use a microwave oven when it makes these noises, but they are an indication that the magnetron is almost dead and will need to be replaced.

    Enter your model number to see parts for your microwave.

    Help me find my model number
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    Exhaust Fan Motor


    If the microwave is loud when running the fan motor might be

    Enter your model number to see parts for your microwave.

    Help me find my model number
    picunavailable175.jpg

    Stirrer Motor


    If the microwave is loud or noisy the stirrer motor might be worn out. The stirrer is a metal blade which slowly turns around, deflecting the microwave energy in a random pattern inside the microwave oven. As the motor nears the end of its useful life it begins to make grinding noises. The microwave will not heat food evenly without this stirrer, the motor should be replaced.

    Enter your model number to see parts for your microwave.

    Help me find my model number
    picunavailable175.jpg

    Turntable Motor


    If the microwave is loud or noisy the turntable motor might be worn out. This is a common problem and relatively easy to replace.
    0f4ca0f2-4838-4552-a2ab-77e770e84fce.gif

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    Magnetron If the microwave is loud or noisy only when cooking, the magnetron tube might be defective. The magnetron uses high voltage, high current DC power to generate the microwave frequency that cooks the food. Under normal circumstances the magnetron is nearly silent. However if it is damaged or nearly burned out it can begin emitting high pitched or growling noises. It's not normally dangerous to use a microwave oven when it makes these noises, but they are an indication that the magnetron is almost dead and will need to be replaced.

    Exhaust Fan Motor If the microwave is loud when running the fan motor might be
    Stirrer Motor If the microwave is loud or noisy the stirrer motor might be worn out. The stirrer is a metal blade which slowly turns around, deflecting the microwave energy in a random pattern inside the microwave oven. As the motor nears the end of its useful life it begins to make grinding noises. The microwave will not heat food evenly without this stirrer, the motor should be replaced.

    Turntable Motor If the microwave is loud or noisy the turntable motor might be worn out. This is a common problem and relatively easy to replace.
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    Magnetron If the microwave is loud or noisy only when cooking, the magnetron tube might be defective. The magnetron uses high voltage, high current DC power to generate the microwave frequency that cooks the food. Under normal circumstances the magnetron is nearly silent. However if it is damaged or nearly burned out it can begin emitting high pitched or growling noises. It's not normally dangerous to use a microwave oven when it makes these noises, but they are an indication that the magnetron is almost dead and will need to be replaced.
    Exhaust Fan Motor If the microwave is loud when running the fan motor might be
    Stirrer Motor If the microwave is loud or noisy the stirrer motor might be worn out. The stirrer is a metal blade which slowly turns around, deflecting the microwave energy in a random pattern inside the microwave oven. As the motor nears the end of its useful life it begins to make grinding noises. The microwave will not heat food evenly without this stirrer, the motor should be replaced.
    Turntable Motor If the microwave is loud or noisy the turntable motor might be worn out. This is a common problem and relatively easy to replace.
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    Thermostat If the microwave exhaust fan is not working the thermostat might be defective. The thermostat senses the air temperature and turns on the fan as needed, if it's defective it won't turn on the fan. Watch our video on testing thermostats.

    Main Control Board If the microwave exhaust fan is not working check the exhaust fan motor and wiring. If they are good the main control board might be defective.


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    Unit makes a lot of noise when cooking.

    The exhaust fan may be loose, {check mounts} also, the turnable motor that rotates the plate often gets noisey before seizing, {remove plate to see if noise goes away} and finally the magnetron gets very loud near end of life.
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    Turntable does not turn and fan won't exhaust

    The second problem is probably defective door switches, or it may be a problem with the control panel, which we repair nationwide for only $32.50. On my Web site, I have info on safety, disassembly, and diagnosing and replacing door switches: http://tinyurl.com/yzjozk Running it empty has damaged the magnetron. It will work for a while, but it will eventually have to be replaced. A good parts source is here: http://tinyurl.com/gv383
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