Question about KitchenAid KHMS155LSS 1000 Watts Microwave Oven

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Problem with Kitchenaid over-the-stove microwave

Last year my Kitchenaid model KHMS155LBL-3 stopped working approx. 1 year after install. It did everything but cook. Under warranty, they replaced the magnet, cap & diaode. It worked fine for 11 months and the same thing just happened. Kitchenaid extended the 1 year warranty for another year. But after looking on the web, it appears my chances of finding a good solution is remote. What can you suggest?

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6ya6ya
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Posted on Jan 02, 2017

SOURCE: Kitchenaid Stainless Microwave Handel KHMS155LSS

part number 8184264 should do the trick.

Posted on Oct 09, 2007

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SOURCE: Kitchenaid builtin microwave buzzing

I would recommend changing the diodes as well. This will usually take care of the problem.

Posted on Oct 25, 2008

  • 7 Answers

SOURCE: kitchenaid microwave hood combo KHMS155LSS

First, do not leave this machine plugged in until it is serviced. If this is a KHMS155LSS, there is a very high probability that you have a keypad short. This defect can cause the machine to start on its own at ANYTIME; while you are on vacation or at work or at night while you are sleeping etc. Contact Whirlpool Customer Service and ask for Safety Dept immediately. They will most likely send A&E (Sears) out to fix it. Although they will fix the problem, if the keypad fails again, the underlying logic self start defect is still present. You should be under warranty if it is above model. Please be polite, insistent, but polite. With KitchenAid's pathetic quality in recent years, their customer service reps get more then an earful. Also, please go to the Consumer Product Safety Commision website at www.cpsc.gov and post a Report Unsafe Products report. This will help get this model recalled before someone loses their home or life. I almost had a fire this past Monday, Labor Day, 9/7/09 when my machine self started at 3 AM with a package of bacon left in it to thaw at room temp for the morning. What a smokey mess. Chinese made garbage. Shame on Whirlpool. Long live Hobart!, please buy back KitchenAid and bring back the lost quality.

Posted on Sep 09, 2009

  • 2 Answers

SOURCE: microwave model KHMS155LSS-3 turns self on

I had the same problem with the same model of KitchenAid Microwave. KitchenAid customer service will act like they never heard of the problem, although if you google it, you will find that this is a very common problem. Ask to be transferred to the safety department. After more than 6 months of complaining and several repair attempts (they replaced control panel and switches), KitchenAid finally gave me a full refund. This is a serious safety defect for which they have no fix. The product needs to be recalled, and I am willing to testify that KitchenAid was criminally negligent when this product finally causes a house fire and possibly serious injury or death.

Posted on Dec 04, 2009

MicrowaveSvc
  • 9047 Answers

SOURCE: KitchenAid Microwave Model KCMS1555 does not work

Assuming your inside light, turntable, and internal cooling fan all come on when you try to microwave, 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 the mag will cost more.

If you or someone you know decide to look into it, we have critical safety information and disassembly information at our site, and our link is at our listing here on FixYa.

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.

d:%5cele%5crepair%5cmicrowave%5cge_hotpoint%5cmini_manual_behind_grille_small.jpgAt 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 your mini-manual, or if you want to look at it before removing the controller, you can download it here.

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

http://www.gallawa.com/microtech/xformer.html

http://www.gallawa.com/microtech/cap_test.html

You can find links to helpful exploded view diagrams and part ordering help here. I recommend that you bookmark that link to your favorites.

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 owner's manuals and installation instructions for several brands (including Amana, Jenn-Air, Kitchenaid, Litton, Maytag, Roper, Tappan, Thermador and Whirlpool) here.

If it's within the magnetron portion of the warranty (usually 5-9 years) but out of the original full warranty (usually 1 year), then your manufacturer will cover the part cost, but not the cost to visit you (usually $75 -90) or the labor charge to do the work(usually $75 -90 more) . See the model tag in or on the unit for the date of manufacture.

If nothing else, you can save about $75 by taking it to the shop yourself.

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

Posted on Dec 07, 2009

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JVM231WV001


It sounds like instead of an overheated magnetron thermostat tripping the power, you now have a defective door switch.

Our door switch help file is here.

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.

You can find helpful exploded view diagrams and order parts by entering your full model number here.

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

Nov 27, 2012 | GE Profile Spacemaker Over-the-Range...

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My Kitchen Aid Microwave Model no. KHMS155LBL 0 has a broken rack support hook on one side. There are four hooks which snap into a square hole on each side of the microwave cabinet to allow the...


The part you're looking for is Whirlpool number 8204662. Several sources came up from a Google search. Here's one. I've never done business with this site, but their price was the lowest of several I looked at.

Apr 30, 2011 | KitchenAid KHMS155LSS 1000 Watts Microwave...

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I have Model #JER8750AAB Serial#16776012WK When uising the self cleaning feature, oven stopped and F1 displayed on stove ??


  1. Disconnect power to stove
  2. Gain access to the back of the clock (electronic range control or ERC).
  3. Unplug the touch pad ribbon connector from the ERC. This will be a flat wire approx. 1 1/2" to 2" wide.
  4. Make sure everything is clear and will not short out when power is turned back on.
  5. Turn power back on to stove.
  6. Watch for the F1 and listen for the beep.
  7. If you get the F1 and beep, replace the ERC.
  8. If after approx. 30 minutes you do NOT get the F1 and hear the beep, replace the touch pad.

Dec 19, 2010 | Jenn-Air Microwave Ovens

1 Answer

Works for approx 30 secs then it cuts off with a error Code F7 message.


Assuming yours is a model KHMS2050SSS0, here is what the technical sheet says about the F7 error code:

1. Unplug microwave oven or disconnect power.
2. After 40 seconds, check to see whether this solves the problem.
3. Unplug microwave oven or disconnect power.
4. Check cooling fan operation
5. Check the magnetron.
6. Check P65 connection on the relay control board.
7. Check the P56/P66 connection between relay board and relay control board.
8. Check wiring to the 1200W inverter and control system. See “Checking Inverters.”
9. Check operation of all interlock switches.
10. Replace all parts and panels before operating.
11. Plug in microwave oven or reconnect power.
12. Check voltage at 4903-1 on relay board. If it is 120, unplug microwave oven or disconnect power.
13. Replace inverter.
14. Replace all parts and panels before operating.
15. Plug in microwave oven or reconnect power.
16. If problem persists, unplug microwave oven or disconnect power.
17. Replace relay control board.
18. Replace all parts and panels before operating.
19. Plug in microwave oven or reconnect power.
20. If problem persists, unplug microwave oven or disconnect power.
21. Check for reversed plug connection on controls or loose wiring.
22. Replace all parts and panels before operating.
23. Plug in microwave oven or reconnect power.

(This troubleshooting guide presumes one does not know how to test electronic components. That's why they say to replace and part and check it again.)

You can find helpful exploded view diagrams and order parts by entering your full model number from the tag on the oven here.

If yours is a different model number, please reply back.

May 26, 2009 | KitchenAid KHMS2050SSS Microwave Oven

1 Answer

I have an over the stove kitchenaid microwave w exhaust hood. About 1/2 hour after boiling water on my stove, my microwave comes on. I have unplugged the microwave-----any ideas?


The issue is probably your exhaust fan on your microwave comes on automatically when it detects a certain temperature. Mine does this as well but will turn off automatically after temperature goes down.

Feb 25, 2009 | KitchenAid KHMS155LSS 1000 Watts Microwave...

3 Answers

Will run for about 18 seconds,then gives an F7 error code


>No, the service guy did none of the things you suggested.

Just as I suspected...

The "element" as it is so inaptly misnamed in the case of this warranty document, is actually the "magnetron", which should normally have an extended warranty beyond the normal 1-year (I assume) parts and labor warranty anyway.

The magnetron may be the culprit here, but a thorough check of the points on my previously posted list is in order to determine the actual cause of the problem.

Since your husband is an engineer, I would suggest that he invite a colleague over to help and to provide some backup for any heavy lifting if it should need to be removed from the wall.

Safety first after all!

You can download Kitchenaid Whirlpool owner's manuals and installation instructions here in case it needs to be taken down during troubleshooting.

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.

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

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.

You can find helpful exploded view diagrams and order parts by entering your full model number here.

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

Dec 09, 2008 | KitchenAid Microwave Ovens

1 Answer

Microwave


It sounds like there may be a blown fuse. The back of the mw oven will have to be removed to check. Some ovens only have a thermal fuse and not a traditional glass fuse. If that is the case you should call a technician to repair it unless you know how to use a soldering iron.

Dec 26, 2007 | Microwave Ovens

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