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Bosch WFMC3200UC dispenser problems


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35 replies to this topic

#1 Larry Altenburg

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Posted 03 March 2012 - 11:25 PM

So, I've got problems with a Bosch WFMC3200UC washer. The fabric softener dispenser will fill and not drain. I have tried replacing the dispenser and completely cleaning out the tubes. I ran the washer after replacing and cleaning everything out and used no detergent or softener, and the fabric softener still fills but doesn't drain. This suggests to me that there is something that should cause suction from the dispenser that does not. The valves that feed the hot and cold water into the dispensers seem to work fine. I don't have any electrical testing equipment though so I can only tell be feel that the hot and cold are going throu the tubes.

Suggestions for what it could be? or what I should do?

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#2 Samurai Appliance Repair Man

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Posted 04 March 2012 - 07:20 AM

I have tried replacing the dispenser


You installed a whole new dispenser assembly? What's the part number of the part you installed?

Did you look inside the dispenser chamber and clean out the little holes the water comes through? Each dispenser section (detergent, bleach, softener) has it's own set of holes. You'll probably find the holes above the softener are plugged with gookus. Easy fix.

#3 Larry Altenburg

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Posted 04 March 2012 - 08:52 AM

I replaced the entire dispenser unit (part 640612), so it is completely clean.

Prior to replacing the unit I did clean out every orifice in the dispensing unit. Again it is not an issue of water getting into the chamber, rather water leaving the chamber.

#4 Samurai Appliance Repair Man

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Posted 04 March 2012 - 06:04 PM

Okay, just to make sure I'm understanding the problem... the liquid that's left in the dispenser-- is it actually fabric softener or is it clear water?

#5 Larry Altenburg

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Posted 05 March 2012 - 08:29 AM

Ok, i'll try to be very clear this time (I'm not sure I was before):

The original problem that developed was that the softener chamber did not completely drain. So I cleaned the dispenser unit. That didn't work. We stopped using softener completely. Then, water would fill the chamber and not drain. So I removed the dispenser unit and replaced it. I also removed all of the tubing, cleaned it all it with brushes and hot water to ensure there was no residue in anything. I put all the tubing back attached to a brand new dispenser unit. I then ran the wash cycle with no detergent or softener (water only) so that there was never anything but water flowing through the new dispenser unit. At the end of the cycle, the dispenser unit was full of water.

So I now have pristine tubing and dispenser, yet still no drainage from the softener chamber.

I ran the fault test and the machine reports no faults. I ran the valve test and also no faults reported.

I am at a loss...

Hope that explains the problem more clearly.
Thanks

#6 Samurai Appliance Repair Man

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Posted 05 March 2012 - 05:10 PM

This is a head scratcher... let's do one more test to rule out a blockage before we start getting into more exotic repair katas. Remove the fabric softer tube from the dispenser housing and blow thru it. I'm not suspecting the tubing itself but I do want to rule out that we don't have a plug gookus in the molded outer drum assembly.

#7 Larry Altenburg

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Posted 05 March 2012 - 07:48 PM

What exactly do you mean by "fabric softener tube"? All of the smaller tubes attached to the dispenser unit are inlet tubes. Of the two you might be referring, one is a "breather tube" connected to the tub and the other is a "flushing tube" connected to the door seal. (See diagram.)

Nonetheless, both are completely clean and clear.

#8 kdog

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Posted 05 March 2012 - 08:23 PM

If you raise the front of the machine a bit will it work ?
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#9 Larry Altenburg

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Posted 05 March 2012 - 08:38 PM

The machine is level; I'm reluctant to take it off level. Plus there is a significant slope in the dispenser chamber, so a slight incline from the front of the machine won't add much of an angle to the dispenser.

#10 Samurai Appliance Repair Man

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Posted 05 March 2012 - 08:41 PM

Posted Image

#11 Larry Altenburg

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Posted 05 March 2012 - 09:07 PM

done - completely clean inside the tube and the nipples. top and bottom.

#12 kdog

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Posted 05 March 2012 - 09:15 PM

It works as a syphoning affair, so theoretically you just need to overfill the chamber to start a syphon and all of the water should get drawn out - anyway you can remove the drawer and fill it manually in the sink and see if it syphons out ?
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#13 Larry Altenburg

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Posted 05 March 2012 - 09:24 PM

remove the drawer and fill it manually in the sink and see if it syphons out ?


done - it drains fine in the sink

What is supposed to start the siphon effect?

Edited by Larry Altenburg, 05 March 2012 - 09:25 PM.


#14 kdog

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Posted 05 March 2012 - 09:39 PM

Chamber overfilling - maybe the water is not being directed into the chamber properly, or is too slow to fill it
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#15 Larry Altenburg

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Posted 05 March 2012 - 09:47 PM

Hmm. Well the chamber does overfill, it just stays filled.

#16 kdog

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Posted 05 March 2012 - 09:48 PM

If you raise the front of the machine a bit will it work ?


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#17 Samurai Appliance Repair Man

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Posted 05 March 2012 - 10:06 PM

How's cold water flow into the washer? Same flow rate as the hot water or a lot slower?

#18 Larry Altenburg

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Posted 05 March 2012 - 10:17 PM

Very strong. No pressure issues.

#19 john63

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Posted 06 March 2012 - 12:16 AM

<<<The machine is level; I'm reluctant to take it off level.>>>

****************

There's a common misconception---that a front washer this isn't "dead level" will shake during the spin cycle.

This is not so.

What is paramount---is that the washer leveling legs be "dead flat" on the floor.

Leveling a washer using a "level tool" is done primarily for cosmetic reasons. (looks even with the dryer etc)

******************

<<<Plus there is a significant slope in the dispenser chamber, so a slight incline from the front of the machine won't add much of an angle to the dispenser.>>>

******************

The angle of the dispenser trough---allows for water/detergent/bleach/fab softener to flow towards the tub assy.

Kdog is 100% correct in suggesting that the front of the washer be raised (anywhere from a 1/4" to 1/2").

This will allow for better siphon-effect in the dispenser assy.

While your symptom is not a common complaint---I encounter it several times a year. Mostly on LG washers.
Raising the front of the washer has resolved nearly all concerns about failure to dispense.
.
To eliminate:

Musty odor

L-O-N-G cycle times

Dingy/yellowing whites

Suds error message

Slow spin speeds

Intermittent water leaks (from rear of washer)

And other annoying symptoms which vary brand-to brand.

Read below:

The *correct* amount of HE (High Efficiency) detergent that should be used in any front load or agitatorless top load washer with tub sizes 3.0 cu ft and larger is as follows:

HE: (2) Tablespoons Per Wash Load

HE 2X: (1) Tablespoon

HE 3X: (1) Teaspoon

Perform a TUB CLEAN CYCLE every (4) months.

Use: "Tide Washing Machine Cleaner"

#20 Larry Altenburg

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Posted 06 March 2012 - 08:41 AM

So I lifted the front of the washer 1/2" and ran the wash cycle through clean. Still no drainage from the softener chamber -- the cycle ended and the softener chamber was full of water. I'll try again maximizing the distance the front feet allow and report back.




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