"re-circulating" fan does not pull air into the bottom of the microwave. it only blows air at the top, so no filtering is occurring. i have had 2 technicians out, both agree it does not pull air in but have been told by customer service and tech support that everything is normal. as is, the recirculation feature is completely useless. 300cfm is more like 0 cfm.
All of these answers may be the problem however here is another and the only fix would mean you probably will have to run the fan every time you run your microwave. I just bought a new whirlpool otr microwave, the fans were set to blow into the kitchen not through exhaust... However I would have to hold a pan inches from the filter to see anything being pulled upward. It's a poor design that has next to no air flow around the inside of the unit and other vent areas where air can me sucked from so your basically drinking a soda with a hole in the straw. You could take it apart adding come curved baffles inside where there are squared edges even find a way to seal off other vents and holes where air is coming through which will overheat it when you cook something for a long time unless you run the fan.
Best suggestion when buying a new one is have them turn it on and see how much air flow it has.
https://youtu.be/GKNz_tKizYk
All of these answers may be the problem however here is another and the only fix would mean you probably will have to run the fan every time you run your microwave. I just bought a new whirlpool otr microwave, the fans were set to blow into the kitchen not through exhaust... However I would have to hold a pan inches from the filter to see anything being pulled upward. It's a poor design that has next to no air flow around the inside of the unit and other vent areas where air can me sucked from so your basically drinking a soda with a hole in the straw. You could take it apart adding come curved baffles inside where there are squared edges even find a way to seal off other vents and holes where air is coming through which will overheat it when you cook something for a long time unless you run the fan.
Best suggestion when buying a new one is have them turn it on and see how much air flow it has.
https://youtu.be/GKNz_tKizYk
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The issue is that the fan on that unit is a reconfigurable fan. If there is a vent, you install the fan one way, if there is no vent pipe to the outside, you install the fan another way. https://www.manualslib.com/manual/294916/Maytag-Mmv4205.html?page=9#manual
Maytag MMV4205 Installation Instructions Manual Step...
Maytag MMV4205 Manual Online Step 2...
SOURCE: exhaust fan
the fan may be clean, may be fan bush struck thats why fan running not properly, check the internally inside the microwave oven , you should carefull inside micro wave oven very high voltage .
SOURCE: 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.
SOURCE: fan just circulates air instead of exhausting the air outside
The exhaust motor was not installed properly - it has to be turned 90 degrees so that the blower openings face up instead of the front. Whoever installed it didn't read the directions:)
Unfortunately, the unit will have to be taken down from the wall to correct the motor.
SOURCE: I have a Whirlpool MH6130XEQ-0 microwave that doesn't heat food
With the symptoms you
have, I would most strongly suspect a shorted high voltage rectifier
diode or a bad magnetron, or a loose and possibly corroded connection on the magnetron's terminal.
The diode is a fairly
cheap fix, and your magnetron is still under the part warranty, but you would have to pay labor.
There
should be a "mini-manual" (tech sheet) hidden inside the unit
behind the
control panel or hidden on the left side behind the grille, which is
very helpful when troubleshooting, testing, and locating components.
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.
Here are some links you
or someone you know can use for test help, but read their safety
warnings first:
http://www.gallawa.com/microtech/diode.html
(if it's not shorted or burned, it's
probably okay)
http://www.gallawa.com/microtech/mag_test.html
If within the magnetron portion of the warranty (5-9 years)
but out of the original full warranty (1 year), the manufacturer will cover the part cost, but not the cost to visit you or
the labor charge to do the work.
If nothing else, you
can save about $50-75 if you remove it from the wall and take it to a Whirlpool-authorized servicer.
You can find
your nearest Whirlpool/Maytag-authorized servicer here.
Accessing some components for testing and possible replacement will require you to remove the oven from the wall.
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 Whirlpool 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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It's mounted to the underside of the cabinets and to the wall by a mounting bracket. It's on the factory setting for recirculation (no outside exhaust or ducting).
my microwave vent does not pull air in the bottom it does blow air out the top. Maytag microwave
"It's on the factory setting for recirculation (no outside exhaust or ducting)."
Please, tell me all you know about the above.
How is the mwave installed/mounted?
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