Question about Maytag Microwave Ovens

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Maytag microwave MMV4205BAW interior fan continues to run when door is closed

Microwave is still functional. Cooks as usual. Just can't close the door when finished and food is removed as the interior fan continues to run.

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  • Susan Perroni Apr 16, 2012

    Thank you for your help. Unfortunately the micro switches do not appear to be the problem. After receiving your solution, I checked all three switches and they are functioning as indicated (both door open and closed) on the schematic that I found inside the casing.

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  • Maytag Master
  • 6,771 Answers

One of the micro switches has malfunctioned, and must be replaced for normal operation.

Posted on Apr 03, 2012

Testimonial: "Thanks again! I was afraid of that. Probably a bad relay but you have to purchase the whole board and that looks to be a $200 part. Guess it is time for a new microwave."

  • John Cunningham Apr 16, 2012

    That would leave the keypad control board as the problem.

  • John Cunningham Apr 16, 2012

    Thank you Susan, you are right the whole board would need to be replaced and cost would not justify it.

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6 Suggested Answers

6ya6ya
  • 2 Answers

SOURCE:

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Posted on Jan 02, 2017

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  • 1 Answer

SOURCE: Microwave continues to run when the door is closed

Did you pressed the stop/clear button? or disconnect the micro.. for a couple of hours and try again?

Posted on Apr 04, 2009

localwonder
  • 6784 Answers

SOURCE: After use, fan keeps running and control panel not working

Hi, this is a major chip fault. this chip is located on the control board and, it is responsible for initiating the cooking cycle correctly. you will need to replace the control board asap. it has failed.

Posted on Jun 19, 2009

wiringlunati
  • 576 Answers

SOURCE: Microwave GE Spacemaker JVM1650SH05 - The light

The bulb may have blown. It is often under an access panel on the side or back that is held on with a screw or two.

Posted on Jan 26, 2010

MicrowaveSvc
  • 9174 Answers

SOURCE: POwer switch

This is usually caused by either a bad door switch, a loose door switch mount (which are pretty simple problems to fix - see this file) or occasionally a problem on the control panel.

Even though a door switch clicks, it may still be bad inside.

Door switch or mount trouble is usually caused by slamming the door or by opening the door while it's cooking without hitting the Stop pad first.

There are plastic mounts inside the microwave which hold the door switches and onto which the door latches lock when you close the door.

The screws on these mounts may be loose. If they get too loose, the switches will not be activated properly.

Sometimes it's a broken tab on the switch holder, allowing the switch to rotate just out of position. This tab can be hard to see, since it is under the bottom edge of the switch.

positivelock.jpg

If the switch mount is broken, it's usually more economical and safer to add a dab or two of hot glue to the mount to secure the switch. Let it cool for about 30 minutes before using.

One test that sometimes helps is to gently lift up (and/or push down) on the door or handle as you try to start it. If it works or tries to work, then it's a door switch mount or door alignment issue.

You can find links to helpful exploded view diagrams and part ordering help here.

I recommend that you bookmark that link to your favorites.


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.

dee77f7.jpg

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.

If you don't find yours, or if you want to look at it without disassembling the oven, you can download it here.

If you only need a switch, you can order a universal type here for $5 postpaid.

If you think the problem is on the control panel, we repair these nationwide by mail for $39.95 postpaid in most cases in about a week or so with a one-year guarantee.

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

Posted on Jan 31, 2010

MicrowaveSvc
  • 9174 Answers

SOURCE: Fan continues to run when I open the door.

It may be a door switch problem (see this file) or a stuck fan relay on the control circuit board, which we can repair for $39.95 in most cases.

Feel free to contact me directly (and please remind me of your full model number from the tag on the unit) for more information & help.

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

William E. Miller, AS-EET
[email protected]
http://www.microwavedisplay.com
Microwave Oven Control Panel Repair Nationwide

Posted on May 28, 2010

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Check those 3 micro switches in the door latch assembly. A bad microswitch can blow the main fuse. This usually ruins the microswitch.

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If it went dead almost immediately after pressing the Start pad, that's usually a shorted high-voltage capacitor. See http://www.microtechfactoryservice.com/cap_test.html

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If it goes dead or blows the breaker (or GFI) when you plug it in or open or close the door, then there's a problem with a door switch or door switch mount. See our help file on door switches here.
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see this causes and fix it. God bless you
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see this causes and fix it.
God bless you
f the microwave will not work at all, make sure power is on at the outlet and test the electrical cord. Test the fuse and replace it if it is faulty. Also check the door to make sure it closes properly. Test and, if needed, replace the fan. If the oven doesn't cook or cooks only intermittently but the display is on, check the door interlock switch, the thermal cutout (see the Applaince Controls Fix-It Guide), and the fan, replacing parts that don't pass the test.
If the oven keeps blowing fuses, check for a faulty door interlock or monitor switch.

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Oct 04, 2010 | Maytag MMV4205 Microwave Oven

1 Answer

Fan continues to run when I open the door.


It may be a door switch problem (see this file) or a stuck fan relay on the control circuit board, which we can repair for $39.95 in most cases.

Feel free to contact me directly (and please remind me of your full model number from the tag on the unit) for more information & help.

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

William E. Miller, AS-EET
[email protected]
http://www.microwavedisplay.com
Microwave Oven Control Panel Repair Nationwide

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Hi, I am not sure of the cost concerning the control board, however, it does sound like a control board problem, or a door switch problem, I would need to see the specific unit diagram to know for sure, but many microwaves, not all, but many, have a door switch related to that part of the circuit, usually the fuse would blow at that point, but there again, it depends on the circuit. I would suggest you get the unit checked soon however. Hope that helps somewhat, and thank you.

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Or you can return it for replacement.

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

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