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Getting a f-40 code on a kenmore 110.67062600

F-40 flashes if the communication between the machine control and motor control is lost, have already changed machine control board still getting f-40

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Sounds like a oasis dryer ,, repl main control board,remembe there are 2 boards

Posted on Jan 03, 2009

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Elite Oasis. What does the F-40 code mean?


F-40 is a communication error between the main board and the motor control unit, or it could be a bad inline fuse between the two in the wire harness on the l-1 side.

Oct 23, 2015 | Kenmore Elite Oasis 6808 Electric Dryer

1 Answer

This is a follow up question to my kenmore dryer not starting. Model 11067087600. I took out thermal fuse and it tests ok, so I put it back in. I plug dryer in and check lint screen lite flashes. If I...


The F40 error code is indicating a communication problem between the machine control board and motor control board. A bad or loose connection could cause the F40 error code.Several other conditions can cause the F40. The machine control board supplies the voltage to the motor control board for the blower motor. The current goes through a thermal fuse. If the thermal fuse is blown, you will get the F40 error code.
A failed blower motor, machine control board or motor control board can also cause the F40 fault code.
A service technician will be needed to properly diagnose and repair th

Jan 12, 2012 | Kenmore 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

My kenmore Elite Oasis Dryer, Mod#110.67082200, stops during the drying cycle and F40 flashes.


The F40 error is a communication error which means the main control W10111616 is not communicating with the motor control part number 8544799.

First - go through the machine and check all harneses 7 plugs. This expensive machine uses the cheapest parts possible. Unplug and re-plug all connections you can find.
Particularly the controller (CCU) and motor.


Most likely neither control is the problem but since the main control was replaced we know it's not the problem.

The key to diagnosing this problem is to check voltage to the motor control. There is a black and white wire going to L1 and neutral.
Refer to the wiring diagram for an image of this.
If there is 120 volts to the control and the blower motor is not running then the 8544799 motor control is most likely at fault.

It is more likely you will not read voltage there.
Use extreme caution checking live voltage and only do so if you're comfortable and confident using a volt/ohm meter.

If there is no voltage to the motor control and the main motor doesn't run the thermal fuse can be at fault or the main control which was replaced and didn't help.

From the description you give I believe the main motor is running when you get the F40 code so the thermal fuse and main control are most likely okay.

If there is no voltage to the motor control then the problem can be a fuse link that may be open preventing voltage from getting to the motor control.

This part is not the thermal fuse and is not listed in the parts diagram or even shown on the wiring diagram. The fuse link is most likely the cause of your troubles.
If the inline fuse link is open you will have to replace the entire wire harness. The inline fuse link is not available as a separate part.


Thanks for using FixYa - a 4 THUMBS rating is appreciated for answering your FREE question.

Aug 11, 2010 | Kenmore 67082 Electric Dryer

1 Answer

I have an F40 code on my Kenmore Elite Dryer, model # 110.67092600


Fault code F40 is a communication error between the machine control and the motor control. Disconnect power then remove three screws from the rear of the console assembly and pull console towards the front of the dryer to hinge open and remove console. You'll see three electronic assemblies; the machine control electronics, the motor control electronics, and the user interface electronics.

Visually check the communication harness, the three-wire harness that connects between the machine control electronics and the motor control electronics. Make sure it is fully inserted into both electronic controls and the terminal connections are clean. Reseating the connections several times will help clean off dirt and corrosion build up.

Do the same with the the wire harnesses connected to the motor control electronic assembly. Make sure they are clean and fully inserted into the control. It is a good idea to do the same thing with all other wire harnesses in all of the electronic assemblies.

Aug 09, 2010 | Kenmore Elite Oasis 6809 Electric Dryer

1 Answer

Kenmore elite oasis dryer turns on but doesn't start and flashes f40


The F40 error is a communication error which means the main control W10111616 is not communicating with the motor control part number 8544799.

First - go through the machine and check all harneses 7 plugs. This expensive machine uses the cheapest parts possible. Unplug and re-plug all connections you can find.
Particularly the controller (CCU) and motor.


Most likely neither control is the problem but since the main control was replaced we know it's not the problem.

The key to diagnosing this problem is to check voltage to the motor control. There is a black and white wire going to L1 and neutral.
Refer to the wiring diagram for an image of this.
If there is 120 volts to the control and the blower motor is not running then the 8544799 motor control is most likely at fault.

It is more likely you will not read voltage there.
Use extreme caution checking live voltage and only do so if you're comfortable and confident using a volt/ohm meter.

If there is no voltage to the motor control and the main motor doesn't run the thermal fuse can be at fault or the main control which was replaced and didn't help.

From the description you give I believe the main motor is running when you get the F40 code so the thermal fuse and main control are most likely okay.

If there is no voltage to the motor control then the problem can be a fuse link that may be open preventing voltage from getting to the motor control.

This part is not the thermal fuse and is not listed in the parts diagram or even shown on the wiring diagram. The fuse link is most likely the cause of your troubles.
If the inline fuse link is open you will have to replace the entire wire harness. The inline fuse link is not available as a separate part.


Thanks for using FixYa - a 4 THUMBS rating is appreciated for answering your FREE question.

Jun 23, 2010 | Kenmore 67082 Electric Dryer

2 Answers

Kenmore elite oasis dryer model #110.6708 will not operate. flashes f-40. what does f-40 mean?


F40 = thermal fuse blown.
If the fuse is OK the error points to a communication problem between the machine control board and motor control board (check connectors).

Mar 19, 2010 | Kenmore Elite Oasis 6809 Electric Dryer

1 Answer

I have an 14 month old Kenmore Elite Oasis Steam that is flashing F40. What is that?


The F40 error is a communication error which means the main control W10111616 is not communicating with the motor control part number 8544799.

First - go through the machine and check all harneses 7 plugs. This expensive machine uses the cheapest parts possible. Unplug and re-plug all connections you can find.
Particularly the controller (CCU) and motor.


Most likely neither control is the problem but since the main control was replaced we know it's not the problem.

The key to diagnosing this problem is to check voltage to the motor control. There is a black and white wire going to L1 and neutral.
Refer to the wiring diagram for an image of this.
If there is 120 volts to the control and the blower motor is not running then the 8544799 motor control is most likely at fault.

It is more likely you will not read voltage there.
Use extreme caution checking live voltage and only do so if you're comfortable and confident using a volt/ohm meter.

If there is no voltage to the motor control and the main motor doesn't run the thermal fuse can be at fault or the main control which was replaced and didn't help.

From the description you give I believe the main motor is running when you get the F40 code so the thermal fuse and main control are most likely okay.

If there is no voltage to the motor control then the problem can be a fuse link that may be open preventing voltage from getting to the motor control.

This part is not the thermal fuse and is not listed in the parts diagram or even shown on the wiring diagram. The fuse link is most likely the cause of your troubles.
If the inline fuse link is open you will have to replace the entire wire harness. The inline fuse link is not available as a separate part.


Thanks for using FixYa - a 4 THUMBS rating is appreciated for answering your FREE question.!!!!

Mar 07, 2010 | Kenmore 67082 Electric Dryer

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

1 Answer

Kenmore oasis dryer model 110.6706 flashing F40 code is it the motor control board? I have already had this replaced 18 months ago


Just had one of those calls today......what I found this time was simply that the blue communication wire harness (I think it's a 3 wire, very easy to spot, runs from the side of each control board) had popped loose from the MCU. Inspect each connection for damage, and re-seat the connectors back into the controls. If that doesn't do it, you can measure for voltage (no fun with those tiny connectors) to the MCU. The code F-40 simply means loss of communication between the CCU and MCU. So it actually could be either board. Check it out and re-post if needed.

Nov 10, 2009 | Kenmore 67082 Electric Dryer

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