Question about KitchenAid KHHS179L Convection/Microwave Oven

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Replacing a KEMS307DWH4 Microcomputer board

The microwave portion of the dual ovens simply beeps three times when you try to turn it on. all oven functions work fine. Am told I need to replace the processor board. I was quated around $800-1000 to get the repair made. I've looked at it and it seems it simply is turning off the power, removing four (or six) screws and replugging in a number of wires. I've seen the board available online for around $370-400. Is this really this simple and is it something that a somewhat handy lay-person can do?

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  • 9,030 Answers

Is there any fault code shown on the display?

We actually repair control boards for customers nationwide with our guaranteed $39.95 service.

If you do really need a new one, it's not hard to replace yourself.

Be sure to unplug it from the wall first.

Sometimes the trickiest part is unplugging the keypad strip without breaking the locking hood on the connector.

Simply place a thumb and forefinger on each end and gently lift up on the locking hood and then lift the strip out.

You can usually find helpful exploded view diagrams and order parts by entering your full model number here: http://tinyurl.com/gv383

Please reply back with and error code displayed or contact me directly if you might want us to repair it for you.

We're happy to help and we appreciate your thoughtful rating of our answer.

William E. Miller, AS-EET
prototech@usa.net
http://www.microwavedisplay.com

Posted on Jun 29, 2008

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1 Answer

Can you remove the microwave separately without removing the complete oven/microwave unit? KEMS307DWH4 KitchenAid Wall Oven/Microwave combo unit


Hello Richard;

My name is Peter. I am a retired field service technician.

Your microwave is in a separate housing than your oven. You need to remove the border stripping holding the micro wave in the wall, then lift up in the front and pull out.

Go into the following website, put in your model number which is on a label after you open the microwave door.

You did not tell me what the problem is. Please advise so I can help you further.

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Did you mean that the microwave oven won't turn on at all?Did you try replacing the fuse?

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Display is blank


If the display is blank, and the oven works, 9 times out of 10 it is a problem with the circuit board that drives the display.

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Turn off sound


If the owner's manual doesn't offer that as an option, there are three ways:
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I have a whirlpool microwave oven over the range. Model GH 5184xps-4 when I press start, it comes on for one second then it shows a code -F7- and stops


TOUCH PANEL & MICROCOMPUTER BOARD TEST FOR WHIRLPOOL....

The microwave oven may be provided with a self diagnostic routine that can be operated

through the touch pad keyboard. To enter the self-diagnostic routine:

1.While pressing the CANCEL keypad:
a) Open the oven door.
b) Unplug the microwave oven for 2-seconds and plug it back in.
c) Release the CANCEL keypad and close the oven door. You will see the following display.

CHART
NOTE: The humidity sensor test results will appear on the display after 8-seconds.If the tests are successful, "OK " will be displayed. If one or more of the tests fail, "ERR " will be displayed.. 2.When a keypad is pressed, a number according to the test chart will be displayed. When no keypad is pressed, a blank "O" (square) is displayed...

POWER FAILURE & FAILURE CODES
Power Failure: After a power failure, the WELCOME screen will be displayed.

F2 Keyboard Failure: Refer to the Tech Sheet and conduct a touch panel continuity test.

F3 Humidity Sensor Failure: Refer to the Tech Sheet and test the sensor.

F6 Microwave Relay Failure: Check the microwave relay.

F7 Microcomputer Board Failure: Change the microcomputer board.


Hope helps.

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I turned my micowave on it ran for about 5 seconds then stop and showed a display error of f7


Hello :


Microcomputer board failure . You need to change the microcomputer board.

good luck .

please rate !

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It displays F-07 error code and stops working. What is wrong with it?


F-7 is the microcomputer board failure code. The board will need to be replaced.

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Control panel on a whirlpool microwave


SOME ELECTRONIC CONTROLS HAVE A LOCKOUT FEATURE THAT IS ENGAGED AND DISENGEGED BY HOLDING A CERTAIN BUTTON FOR 5 SECONDS. LOOK FOR A LOCK PAD AND HOLD IT FOR 5 SECONDS TILL IT BEEPS.

IF NOT AVAILABLE, THE TOUCH PAD MAY BE UNPLUGGED FROM THE MAIN P.C. BOARD OR MAY BE DEFECTIVE.

ALSO, TRY UNPLUGGING THE MICROWAVE FOR 5 MINUTES
TO RESET THE MICROCOMPUTER, THEN PLUG IT BACK IN AND SEE IF IT WORKS.

AN ELECTRICAL OUTLET NOT WIRED WITH PROPER POLARITY OR NOT GROUNDED CAN AFFECT ELECTRONIC APPLIANCES ALSO.

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