Question about Whirlpool GHW9400 Duet Washer
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Posted on Jan 02, 2017
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
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?).
“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.
Please remember to leave a rating
Posted on Oct 11, 2008
SOURCE: NO POWER JUST BEEPS F70 CODE
Bad main control or ccu here is a link to the repair manual.
Posted on Sep 13, 2009
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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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.
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