20 Most Recent KitchenAid KHMS155LSS 1000 Watts Microwave Oven - Page 6 Questions & Answers

there are 4 things that you can check if you are able to do some electrical tests the diode the capacitor the hv filter capacitor and the magnetron .This is extremely dangerous to work with this high of an amount of electricty and if you are not familiar with these tests i do suggest you call a techncian click here to find how to discharge the capacitor http://www.gallawa.com/microtech/safety.html#dischg

first thing to check would be to see if the microwave is fitted with a fuse this is one of the most common problems for the ones that do have fuses some models do not come with the fuse so if you dont see one dont worry about it .open the casing of the micro wave and look at the rear right for the hv diode it is located next to the power supply and is identified like in the following link http://www.donberg.ie/pics/s/scl_11z-2.jpg. check the diode for any physical damage like a crack , bulge , burst or burned smell this would be a common issue if this were the problem as well to test set a multimeter to resistance at 10k ohms a normal diode should read 50-200k ohms. Next component to check is the HV Filter Capacitor. This component is a big circular steel tube on the board/mounted near the HV diode MAKE SURE YOU DISCHARGE THE CAPACITOR FIRST. Set your multimeter to the highest available setting when connecting to your test the test should read infinite. The reading should go to almost zero and then go back to infinite.also inspect the capacitor for any bulges leaks or cracks or a strong burnt smell these capacitors are made to fail .If neither the diode the capacitor nor the fuse(if you have the fuse) is faulty then you would have by process of elimination end up at the magnetron you can find the magnetron at www.marcone.com under contact us there is a 1800 number and you can find the diode and the capacitors at any electronics supply if you have any further questions message me back and please remember to rank how this opinion has helped it allows me to help others in the future in similar situations Thanks Rick

The cover has to come off the microwave to access the bulb. There are several screws around the back and sides. Remove these and the cover should lift off, revealing the bulb. For your own safety, make sure that the microwave has been unplugged from the outlet for several hours before attempting this repair.

1 slim hope could be to simply unplug it for 5 minutes then plug it back in.If it still does not heat,It is probably the magnetron has gone bad.The magnetron is what produces the heat.There is the possibility of a blown fuse on the circuit board which is usually behind the control panel.If you attemp to replace the fuse and it blows again,your best bet would be to replace your microwave because it would likely cost a minimum of $100 to repair it.Unplug it before taking anything apart also.If you have any questions or need more help,just comment here and I will get an autolink to your post and reply ASAP.I really encourage responses so I can follow up properly as I know where you stand and asking someone else restarts all the explaining because we cannot see other 'Expert's' responses.Good luck,Greg

Ok.Agreed,latch is not cracked or worn out.But check the grip of latch.Open the door.The hold the latch in your hand and see,if its loose or tight.It should be tight.Press the latch towards down and move it left/right slowly --- slowly.And inspect the latch.It will move,there will be a moment but the position of the latch in the door frame should be tight.If you feel that latch is got very loose,then the door frame needs to be disassembled and latch assembly has to be repositioned and fitted.In most of the cases this latch breaks/cracks and it needs replacement.But in your case,its different,you mentioned that if you keep your oven door pressed then latch remains closed..So if latch is broken/cracked it will not get closed properly.So as per that i think,you will have to check the opposite side of the door frame,where this latch gets into.On that side,there is a interlock type part.Which holds this latch.That part is operated by spring.If in-case that interlock type part or the spring,any of this is got loose then latch will get released after few minutes.--------------- But first as regular troubleshooting,you inspect the latch.Do you feel its loose or getting very easily moved,then open the door frame and check the latch.----------- For that you will required door disassembly diagram:--- Click the link,see part number 3 is door latch.-------- http://www.searspartsdirect.com/partsdirect/partsdirect/showSubComp.pd?imageUrl=http://c.searspartsdirect.com/lis_png/PLDM/W0505176-00002.png -------------- If the latch is properly positioned and intact then ,you will need to disassemble the opposite side cabinet to check the internal part,which hold the latch.For that you will require complete disassembly:---Click this link for complete disassembly:-- http://www.searspartsdirect.com/partsdirect/part-model/Kitchenaid-Parts/Microwave-Parts/Model-KHMS155LSS2/0593/0123370?pathTaken=&prst=0&shdMod=KHMS155LSS2 -------------- The door latch itself or other parts holding the door latch,none of the part is costly then $10.The cost of part is under $10.---------It just require you to figure out,either is cracked /broken part or just loose misaligned part.-------- This will help.Thanks.Helpmech.

Hi,

That is not that hard to fix and you can easily buy the parts yourself online...

Here is a tip that will help you with the online buying...

How to Buy Appliance Parts Online

heatman101

Is there a reset button or something I am not aware of?

The error code "F2" that appears on your KitchenAid microwave refers to a keyboard failure/short on the front button panel or loose keypad connector

Attempt the following to clear error:
Check keypad connector for firm connection.
Press "Cancel" after the error code is noted, if error code returns after 60 seconds, replace keypad ( also called touch pad or membrane switch ).

Best of Luck with the microwave.

Hi,

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

Basic Microwave Oven Troubleshooting Tips

heatman101

It sounds like the magnetron may have either failed or is not being supplied with the extremely high voltage required to run it.

YOUR SAFETY IS PARAMOUNT

This is a job for a professional but if you are safety clued up, here's instruction.
Make sure the !!!!capacitor is discharged!!!!! before attempting any sort of repair.
Check the door interlock switches first then the high voltage diode with either an AVO model 8 or moving coil meter on high resistance range for short circuit, (DVM's won't show the fault!), the capacitor can fail and go 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.

Load test.

A simple safety test.
Place 1/2 litre of water in a glass container. Measure the temperature of the water.
Place in microwave and heat on full power for 1minute.
Measure the temperature after it has stood for 1minute.
If the temperature difference is more than 9 degrees Celcuis the magnetron is working and producing about 700Watts of heat.
If your microwave is labelled with 900 or 1000Watts. That is about right.
If the temperature is less then the magnetron is not working properly and may need replacing.

This a only a rough guide and any doubts you should consult an authorised service agent.

F2 usually means the control panel is faulty.
Replace the control panel should fix your problem.

A couple of months ago my microwave started making crackling, rattling and grinding sounds everytime i used it and i thought it was going to break down. It turned out one of my children must have spillled or overflowed something with a clear liquid because the micro did not look dirty but there was a crunchy substance under the wheels of the turntable. Once i cleaned this up totally the noises all went away.

This sounds like a control board issue.

Dougmcduff have you resolved this problem with you kitchenaid microwave turning on periodically??? I have the exact same problem. Any solutions? I called Kitchaide and no help there.

There are two or three switches operated by the door latches in a microwave oven. When the door is slammed, they can be damaged or knocked out of adjustment. If the control board thinks the door is open, it won't allow the oven to operate. It's best to let a professional check the oven and adjust or replace the affected parts. Microwaves are hazardous devices, with lethal voltages exposed when the cover is off. Also, repairs involving door repairs can cause microwave leakage if they aren't done properly. But once the switches are operating properly your oven should be fine.

F2 on a Kitchenaid / Whirlpool / Maytag microwave means you have a shorted membrane keypad.

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

On some models, the keypad is available separately.

If you (or someone you know) might want to replace it yourself, I have uploaded a handy guide with pictures showing you what's typically involved.

On other models, the keypad is not available as a separate part, so you would have to order the control panel frame assembly which comes with a new keypad.

It all depends on the model number.

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

"F2" means you have a shorting membrane keypad. The "Pan Heat" key is shorting.

On these models, the membrane keypad is not available as a separate part, so you would have to order the control panel frame assembly which comes with a new keypad.

In this case, you simply move your circuit board into the new frame. That is a simple do-it-yourself job.

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

Then you unplug the keypad (as per the photo below) and move the circuit board into your frame.



Some connectors may have a lock:


* The exact part number you need will depend on your exact model number. Models in that series are shown below:

KHMS155LBL0
KHMS155LBL1
KHMS155LBL2
KHMS155LBL3
KHMS155LBT0
KHMS155LBT1
KHMS155LBT2
KHMS155LBT3
KHMS155LSS0
KHMS155LSS1
KHMS155LSS2
KHMS155LSS3
KHMS155LSS4
KHMS155LWH0
KHMS155LWH1
KHMS155LWH2
KHMS155LWH3

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

Normally you have to separate the door panels (as shown in the attached photo) and then you'll see the screws you need to remove.

Or you can watch a YouTube video (not a video I made) here that demonstrates how it's done.

You can find handy exploded views and order parts by model number here.

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

steam between glass doors of microwave