Question about Kenmore Elite Oasis 7808 Gas Dryer

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Model 110.78082701 F40 error code what does it tell is bad?

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F40 is a error that appears between the machine control and the motor control when communication becomes lost. I had this same issue. My dryer would run and heat up but then stop and give me the f40. I measured all thermisters and everything was in range. The tech sheet stated that I needed to buy a new control board and I did. Same problem.
The solution was a loose connection on for p4. I took needle nose pliers and squeezed the connector to make it fit tight on the board and everything is working now.
Bottom line, expensive dryer with cheap connectors.

Posted on May 11, 2010

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How do I fix an F40 code on a kenmore elite rlectric range model #790.46709603


The "F40" fault code indicates a Cooktop Lockout error. There is a "Lockout" control board that locks out the cooktop from operating whenever the "Clean" cycle is used. It's not normal to display "F40" unless there is a "Lockout" or an "EOC" (electronic oven control) failure. It may need one or the other or both boards replaced. If the cooktop will operate after the range has cooled and unlocked then it may need the EOC and not the Lockout board. If you can ignore the beeping and the F40 and the range will heat up again in the clean cycle and complete the clean cycle then it could have a faulty Lockout board. Here a link to a YouTube video with the instructions on how to access and replace the EOC.

Here is the lockout board if you need to order it.
Here is the EOC board if you should need it also.

All parts come with a 365 day, any part, any reason return policy.


Apr 06, 2013 | Kitchen Ranges

1 Answer

Kenmore elite dryer. model 110.6708 or 09. check lint screen light is on. I have cleaned inlet/outlet/screen/front and back. unit will start but will not heat. if in the normal setting the f40 code wi


The F40 error code indicates a communication failure between the main machine control board and the motor control board for the blower motor on the dryer.

This can be caused by a loose wiring connection or a blown fuse.

Nov 22, 2012 | Dryers

1 Answer

I am receiving a f40 code on gas dryer


F40 is a error that appears between the machine control and the motor control when communication becomes lost. Check the connection between the two. The error codes whould be on the tech sheet beneath your console panel along with how to check for this error.

Aug 03, 2011 | Dryers

2 Answers

Dryer wont run gave me f40 code, can you help me?


I found two possibilities for an F40 code.

1) Error Code F40 is that the thermal fuse has blown.

2) The F40 error code is a communication problem between the machine control board and motor control board. A bad connection might or might not cause this.

Dec 23, 2010 | Kenmore Elite Oasis 6808 Electric Dryer

1 Answer

Got F40 error code self-cleaning my 790.9642 Kenmore range


try this, after several calls I finally found out what the code meant. code meant. Power supply issues, not necessarily with your power supply but with the appliance2_bing.gif itself. Of course they want to send a technician for $65.00, which may be worth the headache. All someone told me was to turn off the power braker for 2 hours and try again. Yeah right, after 2 hours of heating your house and paying the electric bill, but when breaker is off there will not be any electric used. code f40,

Apr 18, 2010 | Kenmore Kitchen Ranges

1 Answer

My Kenmore Oasis Dryer will not run and has an F 40 code. What is wrong with it?


Get the model number and go to:

http://www.searspartsdirect.com/partsdirect/modelHelp.pd?pop=flush&modelNumberId=18

The F40 code can mean a thermal interrupt or a loss of connection between the control circuit board and the motor circuit board.

Perito posted this on askmehelpdesk.com:

I found two possibilities for an F40 code.

1) Error Code F40 is that the thermal fuse has blown.
2) The F40 error code is a communication problem between the machine control board and motor control board. A bad connection might or might not cause this.

If you post your model number, or download the owner's manual from the above link, you'll probably find out what it means, at least.

Dec 12, 2009 | Kenmore Dryers

2 Answers

What does the F40 error code mean?


Here's where you can get a manual for your Kenmore dryer: Copy and paste the following to your browser:

http://www.searspartsdirect.com/partsdirect/modelHelp.pd?pop=flush&modelNumberId=18

I found two possibilities for an F40 code.

1) Error Code F40 is that the thermal fuse has blown.
2) The F40 error code is a communication problem between the machine control board and motor control board. A bad connection might or might not cause this.

If you post your model number, or download the owner's manual from the above link, you'll probably find out what it means, at least.

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1 Answer

F40 code on Oasis HE washer


ocindy, F-40 has to do with the automatic temp control. The thermistor is either shorted or opened. Tell the service tech to check the connections at the water valve and at the board. If ok, change the water valve. If that doesn't solve the problem, replace the main board. Catriver...post back.

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