Question about KitchenAid KHHS179LSS Convection / Microwave Oven

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Error Code I just replaced the magnetron and the control board because the unit was heating at what seemed to be 50% and the touch screen buttons would not function. The replacement went well but now I am getting an error code F3H and a Y low Fail 215 0. The touch screen lights up but buttons don't work.

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  • Anonymous Mar 28, 2014

    the touch buttons do not function noI get an
    f 3 h error message



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  • 17 Answers

I would recheck the control board installtion that you made, as well as verify that you got the correct replacement. Also the board may contain static sensitive componets so you might want to make sure you are grounded when handleing the control panel. Good luck

Posted on May 14, 2008


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My microwave oven quit heating . No error message or any other problem. all buttons work fine just no heat

If it has a turntable that does move it usually means one of three things bad:

1. A diode many use for power purposes for the heating.

2. A circuit board called an inverter that powers the heating and controls the Magnetron.

3. A Magnetron which does the actual heating.
12_11_2012_3_08_28_pm.jpgTypical diode which cannot read shorted or open across.

12_11_2012_3_10_09_pm.jpgTypical Magnetron which usually cannot be tested by normal means but has to be replaced to know if good or bad.

Dec 11, 2012 | Kenmore Microwave Ovens

6 Answers


hello sir 

you are right magnetron is fully interrupted....... but tell me  !. do you want to repair machine( 4 sec problem) 2. do you want to buy inverter , magnetron  please tell i am ready to help you sir

I believe that is a microcomputer board failure. You will have to replace this board. Website below.

I have gotten parts from "repairclinic" on line and they worked fine. I saved $600 on the last repair of an oven. Good luck.

or sir you can find and fix each and every type of code error

Oct 18, 2008 | Whirlpool MH6140XK Microwave Oven

7 Answers

Microwave runs but will not heat(unit is approx. 5yrs old)

the problem may be with your thermostat check that ,and repair it

Jul 03, 2008 | Microwave Ovens

1 Answer

My stove is a frigidaire gallery series and my oven won't at all. Error F7 pelase give me a solution

f7 normally is a control issue either the touch pad or the control board inside the unit... turn the breaker off to unit and try to run your hand over the keypad pressing firmly on all the button ..reset the breaker afterwards usually a 50 amp ciruit and see if it still does it.. the ribbon cable on the touch pad has either failed or the control board itself... common problem with these units.
you may luck out as sometimes the keypad will get stuck and by resetting will correct problem...

Jan 13, 2011 | Microwave Ovens

1 Answer

Unit indicates voltage but oven produces no heat

Might have to look for the series fuse to the magnetron, if blown and on replaccement if this blows again the magnetron is faulty and needs a replacement.
If this seems OK , the high voltage capacitor can be weak or open or short. replace and the microwave will work.
Finally check the door switch the temperatrue cut off unit , the main relay and the control board.

Sep 17, 2010 | GE Spacemaker JVM1640SJ Microwave Oven

1 Answer

F-9 Error Code and Note heating

Hello :

F-9 error code indicates a defective control board, inverter module or line voltage too high You can try unplugging or disconnecting the electrical power to the unit for at least 50 seconds to see if this solves the problem, if not then I recommend to replace the inverter module, if this does not solve the problem then the control board will have to be replaced. If that didn't solve the problem , then call for repair .
good luck .
rate please !

Mar 27, 2010 | Kenmore 64683 Microwave Oven

2 Answers

Controlpanel flashes f 3

You have a faulty keypad. You could probably special order this part from a local appliance parts supply store for 50-60$ or purchase a new microwave.

Oct 22, 2009 | GE Spacemaker JVM1640SJ Microwave Oven

1 Answer

Model 72180883400

F-9 error code indicates a defective control board, inverter or line voltage too high. f the microwave runs for about 7 seconds with a ticking sound..then stops and shows "F-9", it is the magnetron that has failed. The fact that the unit starts and runs with the TICKING SOUND means the control board is sending signal to inverter board and the inverter board is sending signal to magnetron. Magnetron is covered by full 5 year warranty, inverter board is only 3 years.

Sep 01, 2008 | Kenmore 62702 Microwave Oven

1 Answer

Heat reduced to maybe 50%

The stirrer may have been causing the squeaking noise, and the low heat is most likely the magnetron.

Generally, the most common causes of a failure to heat are:

- bad door switches or door switch mounts
- loose connection at the magnetron
- problem or loose connection on the control unit circuit board
- bad magnetron or other high voltage part

If you or a friend decide to look into it, we have critical safety information, info on door switch diagnosis and replacement, and disassembly information at our site, and our link is at our listing here on FixYa:

Dec 05, 2007 | Kenmore 63662 / 63664 / 63669 Microwave...

1 Answer

Doesn't heat anything anymore...

check highvoltage section and diodes and finally replace magnetron...

Oct 13, 2007 | Sharp R-1500 Microwave Oven

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