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FIXED WFW5620HW0 Whirlpool Washer F6 E2 Error Code

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AM Appliance

Premium Member
Joined
Jul 26, 2021
Messages
5
Location
Madison, WI
Model Number
WFW5620HW0
Brand
Whirlpool
Age
1-5 years
Hi,

I have a three year old Whirlpool Front Load Washer WFW5620HW0. It initially showed a F6 E2 error code (HMI can't hear ACU). Washer was unplugged overnight and when plugged back in the user interface panel did not respond when buttons were pressed. It will enter service mode and will show the following scrambled LED output for the error code: 8F6, 8, 8E2, 8. Later when I entered Software Version Display it produced a variety of codes but after a minute the F6 E2 code was scrambled into the prior codes to now appear as: UF6, n--, nE2. Later, the error code F6 E1 displayed (ACU can't hear HMI). What is the purpose of Software Version Display? Is this scrambling an indication of the ACU gone bad? There is 120V power in and out of the RFI Filter. I did not see any connectors loose or unplugged.

I was not able to do a complete Test #1: ACU Power Check but the service manual states that if the ACU service LED was blinking 0.5 sec on and 0.5 sec, "ACU is probably ok and the problem is elsewhere." The washer is currently blinking the 0.5 s on and off at the ACU. As for user interface panel, it passed it's test successfully in the service diagnostic mode when it lit up all buttons and properly darkened when the buttons were pressed again. The digital display properly read: 888. I see in another thread (https://www.applianceblog.com/mainf...oad-washer-mvwb865gw0-with-f6-e2-error.79986/) someone else had the F6 E2 error code and user interface panel passed test in service diagnostic mode but it ended up being the user interface panel. My goal is to replace one electronic unit. If both units are recommended to be replaced, a new washer may be best approach. Thanks!
 

Jake

Appliance Tech - Admin
Staff member
Joined
Aug 24, 2004
Messages
125,330
Location
McMullen Valley, Arizona
I located a service bulletin on this problem.

Whirlpool's ongoing field quality monitoring has identified that nearly 100% of the HMI's replaced and returned to Whirlpool for analysis have no issue.
Instead, HMI performance can be impacted by software issues on the ACU, so replacing the ACU is the proper repair when other potential causes are ruled out.

So from what you said it can't be the HMI, because it passed the test, you see what I'm saying?

Here's the ACU part you need for your model:

That other thread is a different model than yours and is not included in that service bulletin.

Let us know how it goes after you replace the ACU.

Jake
 

AM Appliance

Premium Member
Joined
Jul 26, 2021
Messages
5
Location
Madison, WI
Thanks Jake, the service bulletin information is really helpful. I imagine a lot of people are swapping both boards and sending them back to Whirlpool for them to take a look. Glad to hear they have feedback to report on. I will be replacing the ACU early next week so I hope to give you an update after that.
 

Jake

Appliance Tech - Admin
Staff member
Joined
Aug 24, 2004
Messages
125,330
Location
McMullen Valley, Arizona
Ok sounds good, yes let us know how it goes.

Jake
 

Jake

Appliance Tech - Admin
Staff member
Joined
Aug 24, 2004
Messages
125,330
Location
McMullen Valley, Arizona
Excellent @AM Appliance glad to hear the new ACU fixed it.(y)

Thanks for the update!

Jake
 
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