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Author Topic: Duet Washer wfw9150ww01  (Read 203 times)

Offline konakid

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Duet Washer wfw9150ww01
« on: September 09, 2016, 12:24:44 AM »
Someone with experience may be able to save me from throwing more money at this washer.

-It will power up
-Then I press start
-Door locks, add garmet light comes on, and nothing happens - it used to spin sensing load (I guess)
-Door won't unlock
-Pressing Start again turns off some lights, but pressing Power won't turn it off completely
-I cannot unlock door.
-After 5 mins or so I get flashing error code of F6E1 ( I know - it is a "communication error")
-I can then press power and it turns off completely and door unlocks.

I replaced the CCU and get exactly the same results.
Any tips or feedback would be appreciated.


Offline anerepair

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Re: Duet Washer wfw9150ww01
« Reply #1 on: September 09, 2016, 01:24:51 PM »
This is common symptom of a bad mcu or motor controller.  The majority of the time you just have a bad mcu and it will need to be replaced.  Before you replace the board you need to check the ground circuit of unit.  Make sure the outlet is grounded, that is a necessity for this unit.  I can not stress this enough because ground for communication reference, if you are not grounded unit may act erratic, may work fine for years or may not work at all. 
If the ground is good  and if you feel comfortable with a meter you can check supply voltage to the mcu.  The 2 pink wires should see 120 vac right after that door locks, the vac is momentary so have your leads tagged before pressing start.  The 3 blue wires should have 5 vdc at all times when unit is powered on, pins 1 to 3.  I feel confident that the issue is with your mcu but it doesn't hurt to check these things because, as you already know, pcb's can be expensive. 

Offline konakid

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Re: Duet Washer wfw9150ww01
« Reply #2 on: September 09, 2016, 04:09:32 PM »
Thanks a million for that info. I arrived at the same conclusion after more research and already ordered a MCU - since every day the mountain of dirty cloths grows more impressive.

Unfortunately I am a long way from a wiz with a multi tester and checking circuits, etc. I will check the ground at the outlet. Are you suggesting I also double check all the internal grounds and ground safety switch on the bottom front panel as well?

I ask about the safety switch because I have removed the bottom front panel and I get the exact same results when trying to start the machine as when the panel is on. In other words, depressing the switch makes no difference.
« Last Edit: September 09, 2016, 04:10:40 PM by konakid »

Offline anerepair

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Re: Duet Washer wfw9150ww01
« Reply #3 on: September 09, 2016, 04:18:09 PM »
Yes, those switches are actually the ground switches so if the panel is off you want to actuate both switches, front and rear, as if the panel were on.  It is weird because most of these units will run fine with panel off but every so often you come across one that won't run with panel off or runs erratically with panel off.  Inside the machine just follow the ground circuit and visibly inspect the wires and their connections.  I think they run to mcu, motor, tub and grd switches.  You are just checking for corrosion, pinching, hot spots etc.   I hope that mcu fixes you up, I bet it will.

Offline konakid

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Re: Duet Washer wfw9150ww01
« Reply #4 on: September 09, 2016, 05:18:27 PM »
Hmmm - a curious observation when checking the ground circuits. I have continuity across the two terminals on the front panel safety switch when the button is not "in." But when I push the button in (as it would be with the front panel installed), the circuit is broken - no continuity.

I was thinking that this should be the opposite. Am I missing something?

Offline anerepair

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Re: Duet Washer wfw9150ww01
« Reply #5 on: September 09, 2016, 05:25:47 PM »
No that is good, it is a safety feature.  So when the panel is off the circuit is grounded, to protect you from being electrocuted.  When the panel is off the ground circuit is opened to run normally.   

Offline konakid

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Re: Duet Washer wfw9150ww01
« Reply #6 on: September 09, 2016, 05:30:22 PM »
Ah - got it - I feel better when I understand the way things work.

The outlet is grounded, so I guess I'll wait for the new MCU. I'll let you know.

Thanks again

Offline anerepair

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Re: Duet Washer wfw9150ww01
« Reply #7 on: September 09, 2016, 05:31:26 PM »
Please do keep us informed. 

Offline konakid

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Re: Duet Washer wfw9150ww01
« Reply #8 on: September 12, 2016, 11:52:40 PM »
As promised - here is an update.

I replaced the MCU and as I type the cycle has started and everything has been proceeding as it should. So, it looks like it was the MCU.

So, if I don't report anything further, that means the full cycle completed successfully.

 :thanks: for the support.

Offline AJ

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Re: Duet Washer wfw9150ww01
« Reply #9 on: September 13, 2016, 06:25:23 AM »
Can you post the part number of that MCU.
Thanks for the update!

 

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