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Over Stop Microwave Vent Blower doesn't remove steam

Magtag Microwave MMV6178AAW is mount for roof vent exhaust. The blower fan is mount for vent exhaust. Blower unit sounds like it is moving air but no air from exhaust port at bottom of unit. Hold a printer paper to the exhaust vents under MV and the paper shows no exhaust is available at the exhaust. The exhaust run in about 30 feet with one 45 degree elbow and 90 degree roof vent, 6 inch pipe. Reported the problem and was contact by technician and he said the it wasn't working, but he couldn't find any thing wrong. Would appreciate and suggestions. Thank you

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Whirlpool customer service is here and you can also enter your model number on that page to download your owner's manual, installation instructions, etc..

The installation instructions are what you need.

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

Posted on Jul 19, 2008

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1 Answer

How do I change the front exhaust to top exhaust on a Kenmore microwave/hood


Hi,

In order to change the venting on the microhood you need to uninstall the unit and at the top of the microwave is the blower unit. Remove the cover, flip the blower and you should then see the fins on the motor, reinstall the unit under the cabinet and your good to go. I hope this helps, good luck

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Need to know if I can convert it to outside vent


This unit has a three way exhaust capability on it. There is a plate on the back that you remove to set the blower housing to back, top or frontal exhaust. You take the plate off and then just lift the blower assy. up and then reset it back into position for the direction that you want. It may be missing the vent louver for outside exhaust if it wasn't left with the unit when it was installed.

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Microwave VENT fan keeps running


I would say you replaced a good hood thermostat (or "TCO" / thermal cutout) with a new thermostat of the wrong type.
The oven cavity TCO and the magnetron TCO will read zero ohms continuity when tested.
They are "normally closed" devices.
But the hood vent exhaust fan's TCO is a "normally open" TCO or thermostat, so it should read open or "infinity" on a continuity check.
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I had the same problem with the fan not wanting to shut off after the repair. Once I set the clock though I was able to push the button to shut the fan off. So try setting your clock first and see if that helps.

May 07, 2013 | GE Profile Spacemaker Over-the-Range...

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I would like to know whether the factory blower orientation for MMV4205AA had changed since 2000. Was it changed from top vent to circulating (into the room)? If it did, when did this change...


Here are the instructions for re-orentation of the blower.

The unit is shipped in the room vent configuration. The blower is re-orented for a wall vent.

http://www.youserguide.com/wiki/Whirlpool_8101P641-60-011

The page numbers for the manual are changed at the top of the document.

For roof vent configuration:

Here are the instructions for re-orentation of the blower.

http://www.youserguide.com/wiki/Whirlpool_8101P641-60-012

The page numbers for the manual are changed at the top of the document.

Wall plate installation is on page 13

Here are the instructions for the wall plate.

http://www.youserguide.com/wiki/Whirlpool_8101P641-60-013

The page numbers for the manual are changed at the top of the document.

Thanks for choosing FixYa

Kelly

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is your house vent connected properly? no restrictions?

Aug 02, 2010 | GE Spacemaker JVM1640SJ Microwave Oven

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Whirlpool microwave oven mh7155xmb0 not venting


Possibly a bird built a nest (swallows) in or on the roof vent. Make sure the fan turns freely when off. Check the vent tube that goes up to the roof--if flex-tubing, it may have collapsed and pinched off the air flow (it may be too long). Make sure that a one-way valve which should be near the exit of the hood is free to move when air flow pushes on it. This valve is supposed to prevent back-flow of air into the house. Hope this helps!

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1 Answer

Venting from top to back on microwave do you remove metal piece so it can vent out


you need to rotate the blower in the back of the microwave, there shoudl be a screw you take out and you can then rotate the exhaust toward teh top

May 12, 2008 | Microwave Ovens

2 Answers

How does the vent work?


Under cabinet microwaves generally have two configurations for venting.
1) There is a vent cover plate on the top or rear (sometimes both) of the unit that can be removed and connected to a duct that vents up to the roof. If you do not have such a duct installed then that cover plate should be left on the unit so that it vents in configuration 2.
2) With the external venting ports sealed with the cover plate(s) the microwave simple draws air from the bottom (usually through 1 or 2 grease capture screens) and vents it out thought the front/top of the unit. This configuration isn't very useful as it just blows the air back into the kitchen. Many people don't both using the microwaves blower in this configuration.

Feb 16, 2008 | GE Spacemaker JVM1640SJ Microwave Oven

1 Answer

Mircowave works, exhaust door opens, fan stop working


From looking at the owner's manual, it looks like the vent fan is only supposed to come on when the internal temperature of the microwave gets too high OR when you press the VENT FAN pad. Here are a couple of fan-related excerpts from the owner's manual, which can be found here: http://products.geappliances.com/ProdContent/Dispatcher?REQUEST=SKUOBJECTS&DOCUMENT=Use%20and%20Care%20Manual&SKU=JVM1840BD (or the better URL here: http://tinyurl.com/yn7r6g) Automatic Fan An automatic fan feature protects the microwave from too much heat rising from the cooktop below it. It automatically turns on if it senses too much heat. If you have turned the fan on, you may find that you cannot turn it off. The fan will automatically turn off when the internal parts are cool. It may stay on for 30 minutes or more after the cooktop and microwave controls are turned off. - Vent Fan The vent fan removes steam and other vapors from surface cooking. Press VENT FAN once for high fan speed, twice for medium fan speed, a third time for low faw speed, or a fourth time to turn the fan off. Press the VENT FAN BOOST pad for extra fan speed. - Hope this helps.

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