Question about Microwave Ovens

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Exaust vent/ fan very weak

Seems exaust vent barly works, while cooking on cooktop steam goes up front of microwave leaving door damp

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  • Anonymous Dec 13, 2008

    Its brand new everthing is spotless

  • mystic71
    mystic71 Dec 13, 2008

    just wonder if its just gonna be that week for that model thanks

  • William Miller
    William Miller May 11, 2010

    This is due to poor air flow, either to a blockage or a problem with the internal cooling fan or hood vent exhaust fan.

    Are the grease filters or charcoal filter clogged?

    What is your model number?




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  • Microwave Ovens Master
  • 8,820 Answers

In your duplicate post, you mentioned your model, so here you go:

This is due to poor air flow, either to a blockage or a problem with the internal cooling fan or hood vent exhaust fan.

Are the grease filters or charcoal filter clogged?

You may want to check your owner's manual for info on checking the filters. Grease filters can be cleaned, but charcoal filters must be replaced about every 6-12 months.

The installation manual will tel you if there's some error in the installation setup.

You can download Maytag owner's manuals and installation instructions here.

We're happy to help you with free advice and we'd appreciate your thoughtful rating of our answer.

Posted on Dec 13, 2008

  • William Miller
    William Miller Dec 15, 2008

    Since it's brand new, it would be fully under warranty, so I would contact Maytag to have them fix it free.

    You can find
    your nearest Maytag-authorized servicer
    here.

    We're
    happy to help you with free advice and we'd appreciate your
    thoughtful rating of our answer.


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1 Answer

My microwave shuts off, black no power when ever I cook tv dinners, potatoes etc. after 2.5 or 3 minutes. After 10 minutes or so, power comes back on and it displays PF. lots of steam inside after.


Hi Kerry,
"PF" is power falure if you didn't aready know this. It sounds to me like the coolig fan might be running slow or there is blocked or restricted air flow through the unit. This cooling fan is only for the HV transformer and magnetron. Sometimes you may get air flow around the door but this is incidental. The PF tells me that the power is being interrupted either at the power source (wall outlet or circuit breaker) or the magnetron TCO is cutting out. It also could be a bad magnetron running too hot. As far as the steam goes, I usually just leave the door open on my microwave for 10 or 15 minutes to let the condensation evaporate.

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Fan works when component heat is higher so its normal.

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This moisture can accumulate from certain types of cooking (lots of boiling) in the microwave or in extreme cases, from a blocked grease filter or exhaust vent duct.

Spills or large amounts of accumulated moisture should be wiped off. Minor amounts can dry out by themselves easier if you leave the door open after cooking.

Also, when boiling on the stovetop, you should always use the hood vent exhuast fan to keep steam and grease out of the controls and the door area of the microwave. I always recommend using the vent fan with any cooking on the stovetop.

As long as it is not rusting the metal mesh screen or other parts of the door, it can be allowed to dry out over a period of days with the door open.

If it is a convection microwave, using the convection heat will help it dry.

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1 Answer

Microwave won't work, I was cooking on the stove and the fan came on and then everything went out on the microwave suddenly


There is a thermostat which detects when the temperature from the cooktop is too high, and it makes the hood vent exhaust fan come on to cool it to protect the controller.

That's I always recommend that you use the vent fan whenever you're cooking on the stove top to keep heat, steam, and grease out of the controls and door panels.

Assuming the wall outlet is good, the first thing I would suggest is a hard reset. Unplug the unit for a minute or so. Then plug it back in, set the clock and try again.

If that doesn't work, leave it unplugged for about 5 minutes.

If it's still dead, another thermostat may be blown,or the fuse.

You can find links to helpful exploded view diagrams and order parts here.

I'd recommend that your bookmark this link to your favorites.

At our Web site, we have a video available showing how to remove a typical over the range control panel assembly in under 5 minutes.

Usually the fuse and magnetron thermostat will be accessible for testing behind the controller.

If those are good, then it may be a bad oven cavity thermostat, and checking that will require you to remove the oven from the wall and take off the outer cover.

Behind the controls in many microwaves is a technical sheet, which helps in locating and testing components.

We're happy to help you with free advice and we'd appreciate your thoughtful rating of our answer.

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1 Answer

Steam gets in the door and how can we clean and prevent?


This is usually due to incomplete venting or impaired air flow.

Assuming your hood vent exhaust fan is running properly, be sure your grease filter is clean (or if you use a charcoal type, it must be replaced when dirty) and be sure the exhaust ductwork and outside flapper are all clear.

I recommend that you always run the hood vent exhaust fan whenever you are cooking on the stovetop, too.

You can find links to helpful exploded view diagrams and part ordering help here. You can get new filters there, too.

I recommend that you bookmark that link to your favorites.


We're happy to help you with free advice and we'd appreciate your thoughtful rating of our answer.

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1 Answer

My ge microwave is rusting under the turntable.


This is due to either liquid spills or steam buildup or both.

In rare cases, you may have bad air flow (blocked vent or clogged filter) or a weak internal cooling fan or hood vent exhaust fan.

It's recommended to wipe off any moisture that accumulates inside, and leaving the door open a while after cooking may help, too.

And I always recommend that you use the vent fan whenever you're cooking on the stove top to keep heat, steam, and grease out of the controls and door panels, etc.

You need to clean the area, sand it shiny, then clean it squeaky again.

Then you can get high temperature appliance paint in spray or brush-on form from local appliance part stores or places like Wal-Mart and Lowe's.

I would suggest you let it dry overnight with the door open before using the oven.

You can find helpful exploded view diagrams and order parts (such as charcoal filters, etc.) by entering your full model number from the tag on the oven here.

You shouldn't need to remove the oven from the wall to take care of this problem.

If so, the installation instructions are very handy, and it's best to have two people since the microwave can be heavy and awkward.

You can download GE owner's manuals and installation instructions here.

We're happy to help you with free advice and we'd appreciate your thoughtful rating of our answer.

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1 Answer

Acceptable distance from cook top surface to microwave?


Sorry but your subject line got cut off. I'll assume you're talking about the distance from the cooktop to the top of the microwave (bottom of the cabinet to which it's mounted).

Here's how the installation instructions spec it:
  • "Make sure the bottom edge of the cabinet that will be above the microwave oven is at least 66" from the floor and 30" from the cooking surface."
So it's measured from the cooktop to the top of the microwave, not the bottom edge.

And I always recommend that you use the vent fan whenever you're cooking on the stove top to keep heat, steam, and grease out of the controls and door panels.

You can also download your owner's manual form the link I posted above.

We're happy to help you with free advice and we'd appreciate your thoughtful rating of our answer.

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Direct spraying of cleaners on the keypad and steam from the cooktop can short the keypad.

Luckily, it dried out. Sometimes it doesn't, and the keypad has to be replaced.

I always recommend that you spray non-ammonia cleaner on a soft cloth (not a paper towel which can scratch) and gently wipe the keypad.

And I always recommend that you use the vent fan when cooking on the stove top to keep heat, steam, and grease out of the controls.

We're happy to help you with free advice and we'd appreciate your thoughtful rating of our answer.

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1 Answer

Exaust fan has weak suction on maytage mmv4205baw


This is due to poor air flow, either to a blockage or a problem with the internal cooling fan or hood vent exhaust fan.

Are the grease filters or charcoal filter clogged?

You may want to check your owner's manual for info on checking the filters. Grease filters can be cleaned, but charcoal filters must be replaced about every 6-12 months.

The installation manual will tel you if there's some error in the installation setup.

You can download Maytag owner's manuals and installation instructions here.

We're happy to help you with free advice and we'd appreciate your thoughtful rating of our answer.

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