20 Most Recent KitchenAid KHMS155LSS 1000 Watts Microwave Oven - Page 7 Questions & Answers

Do a manual defrost of the unit. Unplug it.. empty the freezer and place a fan b l o w i n g into the freezer for about 2 hours.
After the manual defrost return the unit to normal service.

If the soft build up of ice shows up again take a very hard look at the door seals. Look for tears.. gaps or any place the gasket is no longer attached to door face

This unit should defrost about every 10 hours. If it does not automatically defrost,,,, doing a manual defrost will only keep the unit going if you repeat the manual defrosting drill every 2 - 3 days.

If it just never goes into the automatic defrost cycle at all, the control board could have failed. PN: W10116216
Item 5 this link:
http://www.searspartsdirect.com/partsdirect/part-model/Kitchenaid-Parts/Refrigerator-Parts/Model-KFCS22EVMS3/0593/0161000/W1003150/00003?blt=06&prst=&shdMod=

A failed defrost heating element can also cause this. Item 10 this link:
http://www.searspartsdirect.com/partsdirect/part-number/Kitchenaid-Parts/Refrigerator-Parts/12729129/0046/106/Model-KFCS22EVMS3/0593/0161000?keySuffixId=NA&productTypeId=x&searchModelNumber=KFCS22EVMS3&subCompDesc=Unit%20parts&brandDesc=KITCHENAID&modelDesc=REFRIGERATOR&pathTaken=partSearch&blt=11

A replacement handle can be purchased at any of the following websites:

searspartsdirect.com
pcappliancerepair.com
appliancepartspros.com
repairclinic.com

The part numbers are as follows:

8169737 - White
8169738 - Black
8169739 - Bisquit
8184264 - Stainless

When ordering, make sure you use the appropriate part number to match the color you have. All these sites offer competitive pricing, so shop and compare.

If you need assistance in how to replace the door handle, the following link explains how:

http://www.fixya.com/support/r3696942-microwave_oven_door_handle_replacement

If you have questions, or need additional assistance, please post back and let me know. I hope this helps you.

The constant humming noise you hear when the microwave is plugged-in but not running is caused by the Low Voltage Transformer, which is located inside the back wall of the outer cabinet on the left side. If the microwave is working properly otherwise, there is no hazard, just the annoying noise.

To access the transformer, the microwave must be taken down and the outer cover removed. The transformer is held to the back wall of the cabinet with four screws, and there are two sets of leads with pull-apart connectors. The noise is the result of 60hz vibration being transmitted to the sheet metal from the transformer which may not have been sufficiently "potted" or otherwise mechanically isolated when manufactured. You can either replace the transformer or try wedging some thin rubber or other material between the transformer and the sheet metal to quiet the noise. Just be careful to not damage the windings!

BE CAREFULL!!

The magnetron has either failed or is not being supplied with the extremely high voltage required to run it.
Make sure the !!!!capacitor is discharged!!!!! before attempting any sort of repair.
Check the diode with either an AVO model 8 on high resistance range for short circuit, the feed fuse on the primary of the high voltage transformer and then finally, the magnetron is best checked by substitution.
Hope that helps.

Hi,

If the unit quit working while cooking then your not in a good situation. There are 3 fuses/cut off thermostats inside the unit that if they break when in use--means something else caused them to break and you have another problem.

You will have to pull the unit completely down and then take off the outer case of the unit to look inside. The most common fuse that breaks is located just behind the control panel and it's a 1" long ceramic cylinder fuse. If it has no continuity then get another and see what happens when you start the cycle.

I should warn you that microwaves are the one appliance not recommended for do-it-yourselfers because they store a charge in the capacitor and if not handled correctly and you touch the wrong wire it can actually KILL you.

Let me know,if needed further assistance.

Hope i helped you.

Thanks for using ' Fixya ' and have a nice day!!

My Whirlpool elite does the same thing when i have the exhaust running while cooking hot stuff. The phrase No Mains with a cartoon character jumping up and down on the lcd display. Tech support claims its low voltage. But my voltage is fine. Moving the plug to a different circuit doesn't help. Unplugging it for an hour seems to be a temporary fix because the problem happens again.

Hi,
Here is a tip that will help you to figure out what is wrong with yourMicrowave Oven....

Microwave Oven Basic Troubleshooting Tips

heatman101

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Hi,
Here is a tip that will help you to figure out what is wrong with yourMicrowave Oven....

Microwave Oven Basic Troubleshooting Tips

heatman101
shgsgh

Hi,

Here is a tip that will help you to figure out what is wrong with your Microwave Oven....Microwave Oven Basic Troubleshooting Tipsheatman101

Hi,
Here is a tip that will help you to figure out what is wrong with yourMicrowave Oven....

Microwave Oven Basic Troubleshooting Tips

heatman101

F6 on these models means that the cook relay on the control circuit board is shorted, and it is cooking anytime the door is closed.

We regularly repair such control units for customers nationwide by mail for $39.95 postpaid with a one-year guarantee.

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 prefer, you can buy a new circuit board (part number 8169733 for $150.27) from the Pros here.

They're our favorite supplier.

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

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.

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 (just enter your model number).

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

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

Hi,

Here is a tip that will help you to figure out what is wrong with your Microwave Oven....

Microwave Oven Basic Troubleshooting Tips

heatman101

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.

Quite often these are simple and economical to repair.

Let us know if we can help you further with free do it yourself tips or an estimate.

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

It's most likely a blown magnetron thermostat, but you should also check the fuse and the oven cavity thermostat.

There should be a "mini-manual" hidden inside the unit behind the control panel or hidden on the left side behind the grille, which is very helpful when troubleshooting, & testing.

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

Accessing the thermostats 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 Kitchenaid / 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.

Thanks for your question!

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Hi,
This means that the magnetron has stopped working. How long have you owned this unit? the magnetron may still be under warranty. If not your best bet may be replacement but once I have more information i can assist you further.
Thank you,
Lee

Hi,
Here is a tip that will help you to figure out what is wrong with your Microwave Oven....

Microwave Oven Basic Troubleshooting Tips
http://www.fixya.com/support/r5508031-microwave_oven_basic_troubleshooting

heatman101

good day,
hope this link below will solve your problem.

kitchen