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Whirlpool frontloader M/N - WFW9400SB00, Code F70, will not power up, followed technical manual instructions and it said to replace the MCC board. Replaced the board and it still will not power up.

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Posted on Jan 02, 2017

  • 2 Answers

SOURCE: flashing code F71 then F70

We've owned a Whirlpool Duet Washer (WFW9200SQ00) for about 3 years. We started getting the F70 error code intermittently about 6 months ago and it seems to progressively be getting worse. Unplugging the unit for a few minutes resets the error, but it comes back about every 2nd or 3rd load causing my wife a lot of frustration and with 4 kids, our laundry was backing up. After reading several Forum's, I found the F70 error code indicates a "heartbeat" communication error between the various electronic boards inside the washer and the consensus seems to be the most likely culprit is the Motor Control Unit (MCU) board. Before spending nearly $250 for a replacement board (http://www.helpfulparts.com/servlet/the-5733/8183196/Detail) with no guarantee that it would fix the problem, I decided to take the board out of the machine and inspect it. What I found is the connector for the communication (the connector with three blue wires) on this board is a very unreliable connector that uses the edge of the printed circuit board on one side of the connection instead of a real connector soldered to the board. In addition, the fit of this connector seems to loose to make a good connection. I noticed a little bit of corrosion on the board contacts which I cleaned with rubbing alcohol and a pencil eraser. After re-installing the cleaned board we've done several loads with (keeping my fingers crossed) no errors. I am still concerned about the reliability of this connection. Because of it's location, this board is subject to a fair amount of vibration and because of the loose fit I'm concerned that this issue will only come back over time. I've already decided that if the error comes back I will solder wires to the contacts on the board to provide a more robust connection. It's a shame that you can spend well over $1,000 on a top of the line washer, and in order to save $.10 Whirlpool decided to use a very poor connector in a critical area. It makes you wonder where else did they skimp to save a few pennies?!! Our next washer will not be a Whirlpool, and next time will not get a high end washer with all the bells and whistles.

Posted on Jan 03, 2010

huuum
  • 750 Answers

SOURCE: error code F70 on Whirlpool frontload washer WFW9600

Welcome spammailmd

You said, you tried to use the delayed wash last night but when we went to it this morning we had error code F70. There is a small possibility that the door was not closed properly, but we forgot to check. We opened the door, closed it and restarted it on a non-delayed wash and it started just fine. The manual for the washer is not very descriptive with the error codes, it simply says to restart and if that doesn't work call the repair man (what is this a microsoft windows machine?).


Whirlpool codes:
“F” codes other than F20, F21 or F22
Select PAUSE/CANCEL twice to cancel the cycle. Select
DRAIN/SPIN if there is excessive water in the washer.
Re-select cycle and press START. If the problem remains,
call for service.


Let me know that it works for you or if you have any questions.
Thank You.
Please remember to leave a rating
Huuum

Posted on Oct 11, 2008

  • 220 Answers

SOURCE: NO POWER JUST BEEPS F70 CODE

Bad main control or ccu here is a link to the repair manual.


http://www.affordableappliance.com/Download%20Folder/Whirlpool%20Duet%20Washer%20Service%20Manual.pdf

Posted on Sep 13, 2009

  • 1 Answer

SOURCE: f70 code, The washer won't start

Check out your latch before changing the computer part. They're easily broken, and cause the machine to think that it's the computer parts.

Posted on Sep 15, 2009

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On Whirlpool duet steam front loading DRYER...What does the error code F70 mean?Do you have to have a certified whirlpool appliance service professional to repair?


F70 code says...
Replace the machine control electronics. You should first unplug the machine and then remove and plug back in all connectors on the front panel model as well as the electronic control module.

If that doesn't take care of the problem then it may be time to consider replacing the rear board. The FSP # 8183259

The control board is part # 14 in the link below.
Sears parts direct /Whirlpool-Parts/Model-WFW9400VE01

Mar 13, 2015 | Whirlpool Washing Machines

1 Answer

F70


Whirlpool F 70 error code indicates communication problem between the component electronics and the control electronics.

Disconnect power to the machine for about 30 minutes, reconnect it, and try again. If it doesnt correct it self change control board.

Oct 08, 2014 | Whirlpool Dryers

1 Answer

What does code F70 on the washer mean?


The "F70" error code is indicating a loss of communication between the Central Control Unit (CCU) and the user's interface board on the right hand side of the console. The main top can be taken off by removing the screws along the back edge of the top. NOTE: Disconnect the power cord from the power source before removing the top.

Possible Causes/Procedure:

  1. Check for continuity of the user interface harness
  2. Check the wire harness connections at the user interface board and the Central Control Unit.
  3. If the unit will run and rotate before the "F70" displays usually indicates the user interface board will need to be replaced.
  4. If the unit will not run and rotate usually indicates the Central Control Unit will need to be replaced.

Jan 22, 2011 | Whirlpool Duet GHW9150P Front Load Washer

1 Answer

Getting code F70 and F71.


Hi.

Please read the tip below, explaining how to fix F70 and F71 problems. The comment applies to Whirlpool Duet washers like the one in question.

F70 and F71 are two logic board error codes that point at a communication error between the main log...

Regards.

Ginko.

Oct 28, 2010 | Whirlpool Duet GHW9150P Front Load Washer

1 Answer

Kenmore ELITE HE 5t 47086 frontload errror code F70


The F70 and F71 error codes on this model of washer indicates a communication problem between the user interface control board and the central control unit (main control board). These error codes can sometimes be caused by a power surge or glitch through the electrical lines. Try unplugging the washer to completely disconnect electrical power. Wait 1 minute and then plug the washer back in to the see if the fault code clears. If it does, then the washer may work normally.

If the code reappears, then you could have a wire harness connection problem, a failed user interface control board or a failed central control unit. I recommend calling a service technician to properly diagnose and repair this type of problem so that the correct component can be replaced.


Be sure your unit is plugged into a 3 prong grounded outlet as well.


F71 is a "heatbeat failure" which means that your front interface control board is shorted and will need to be replaced. it's actually fairly easy to replace and can definitely be done by yourself. To access the part, just pull the unit forward and remove the 3 screws coming in from the back of the top panel. Remove the top panel by pulling it back, up, and off. Then remove all the screws going into the top of the control panel. Remove the dispenser drawer and remove the screws coming in through the dispenser. Remove the screws coming from the inside of the dryer going forward into the control panel, then remove the control panel (it's just clipped in on the bottom. After that you can disconnect the wire harnesses to the front interface control board and replace that part.


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

Feb 26, 2010 | Kenmore Elite 45986 Front Load Washer

2 Answers

Flashing code F71 then F70


We've owned a Whirlpool Duet Washer (WFW9200SQ00) for about 3 years. We started getting the F70 error code intermittently about 6 months ago and it seems to progressively be getting worse. Unplugging the unit for a few minutes resets the error, but it comes back about every 2nd or 3rd load causing my wife a lot of frustration and with 4 kids, our laundry was backing up. After reading several Forum's, I found the F70 error code indicates a "heartbeat" communication error between the various electronic boards inside the washer and the consensus seems to be the most likely culprit is the Motor Control Unit (MCU) board. Before spending nearly $250 for a replacement board (http://www.helpfulparts.com/servlet/the-5733/8183196/Detail) with no guarantee that it would fix the problem, I decided to take the board out of the machine and inspect it. What I found is the connector for the communication (the connector with three blue wires) on this board is a very unreliable connector that uses the edge of the printed circuit board on one side of the connection instead of a real connector soldered to the board. In addition, the fit of this connector seems to loose to make a good connection. I noticed a little bit of corrosion on the board contacts which I cleaned with rubbing alcohol and a pencil eraser. After re-installing the cleaned board we've done several loads with (keeping my fingers crossed) no errors. I am still concerned about the reliability of this connection. Because of it's location, this board is subject to a fair amount of vibration and because of the loose fit I'm concerned that this issue will only come back over time. I've already decided that if the error comes back I will solder wires to the contacts on the board to provide a more robust connection. It's a shame that you can spend well over $1,000 on a top of the line washer, and in order to save $.10 Whirlpool decided to use a very poor connector in a critical area. It makes you wonder where else did they skimp to save a few pennies?!! Our next washer will not be a Whirlpool, and next time will not get a high end washer with all the bells and whistles.

Oct 02, 2009 | Whirlpool Duet 3.8 cu. ft. Front Load...

2 Answers

NO POWER JUST BEEPS F70 CODE


Bad main control or ccu here is a link to the repair manual.


http://www.affordableappliance.com/Download%20Folder/Whirlpool%20Duet%20Washer%20Service%20Manual.pdf

Sep 13, 2009 | Whirlpool Duet GHW9150P Front Load Washer

1 Answer

F70 error code


The F70 and F71 error codes on this model of washer indicates a communication problem between the user interface control board and the central control unit (main control board). These error codes can sometimes be caused by a power surge or glitch through the electrical lines. Try unplugging the washer to completely disconnect electrical power. Wait 1 minute and then plug the washer back in to the see if the fault code clears. If it does, then the washer may work normally.

If the code reappears, then you could have a wire harness connection problem, a failed user interface control board or a failed central control unit. I recommend calling a service technician to properly diagnose and repair this type of problem so that the correct component can be replaced.


Be sure your unit is plugged into a 3 prong grounded outlet as well.


F71 is a "heatbeat failure" which means that your front interface control board is shorted and will need to be replaced. it's actually fairly easy to replace and can definitely be done by yourself. To access the part, just pull the unit forward and remove the 3 screws coming in from the back of the top panel. Remove the top panel by pulling it back, up, and off. Then remove all the screws going into the top of the control panel. Remove the dispenser drawer and remove the screws coming in through the dispenser. Remove the screws coming from the inside of the dryer going forward into the control panel, then remove the control panel (it's just clipped in on the bottom. After that you can disconnect the wire harnesses to the front interface control board and replace that part.


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

Mar 20, 2009 | Whirlpool Duet 7.0 Cu. Ft. Super Capacity...

2 Answers

Technics sadx750 and says f70 and turn power off


Technics sadx750 and says f70 and turn power off

Feb 27, 2008 | Technics SA-DX750 Receiver

2 Answers

Panasonic SA-HE100 5.1 system error code F70


According to the operating instructions, you must take it to a repair facility. There are no troubleshooting suggestions for this problem in the manual.

Dec 15, 2007 | Panasonic SA-HE100 Receiver

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