Samsung front load washer plastic check valve

I bought this front loading washing machine several years ago and 3 months ago a plastic check valve between the steam generator and the water supply valve just above he drum split. i noticed on the inside that it may have suffered some heat damage. I replaced the part only to have it fail once a month ever since. In addition to this the line that comes from the water supply valve disconnects from the check valve even though i use two hose clamps to connect the two. The hose diameter has stretched indicating that there is abnormal pressure and the line seems to be pressurized even when it shouldn't be.

What would cause the check valve to repeatedly fail and the high pressure in the line.

The model number is WF448AAW/XAA

Thanks for the help in advance.

 

Sounds like the steam is staying on. Can you unplug steam generator? Don't have any manuals to help, just googled sansung washer diagnostic and several sites came up. I would try to unplug steam and try, May not work at all or a error code will come up.

 

I tried your suggestion and the machine works without giving me an error code. while i was using it today i was standing next to it and noticed that the check valve and hose leading into it were extremely hot. At that moment the valve developed a leak and steam came from the leak. After i shut it down and it cooled off i replaced the check valve with a new one (I keep spares) and disconnected the steam generator. Is it possible that the steam generator is plugged and not allowing the steam to go into the drum forcing it back towards the supply line.

 

I have never had a problem with the steam, Try blowing through hose if you can. On vacation so will not be able to look at pictures till 1st of April.

 

medavis850, have you found a fix? We have the same problem with are washer.

 

I also have the same problem with the same model Samsung. I hired a Samsung authorized repairman to come to my house and make necessary repairs. He did not know the answer as to why this hose is being push off the nipple with the existing clamp. He called Samsung (they have a help desk not available to the rest of us) and their conclusion was to start replacing parts. I appreciate that the repairman did not want to start this process because of the cost of replacing components and possible not solving problem. It seems to me their can only be one of two answers, either the steam generator is bad or the line to the wash drum is stopped up. The repairman put an industrial clamp on the hose and we have used it several times now and have not had a problem. That said, my wife and I are reluctant to use the steam feature which is one of the reasons for purchasing this unit and since I paid for it I want it to work. I replaced the hose myself with the existing clamp only to have it come off each time. Steam is very powerful and creates a lot of pressure. If it cannot escaped into the washing drum as designed then something else will give. I'm afraid of what other problems will occur if the line to the drum is stopped up and the steam cannot escape. Would appreciate any help.

 

I am not a repairman by any means but it seems to me the issue may be mineral deposits building up from hard water and keeping a valve from closing completly. Even city water can have these hard water minerals in it. Is it possible to backfill regular vinegar into the lines running to the drum and to the steam generator and leave it sit overnight? The vinegar will disolve any mineral deposits. Note: you will want to run the washer through a quick cycle including steam with nothing in it to flush out the vinegar with the disolved minerals the next morning after it has sat all night. You may have to repeat filling the lines with vinegar and letting it sit overnight two or three days in a row. Again, this is a WAG, but I would be interested to know if it works. I have no repair experiance, just know how a shower head gets clogged from hard water mineral deposits and that vinegar works to disolve them. Seems to me that steam would cause these deposits to build up quicker and plug small ports or valves.

 

medavis850, did you ever find a solution to this problem? I have had the exact same issue. I replaced the valve after I had my machine 3 years and the valve lasted 2 years, but this time replacing the valve is not working.

 

I haven't worked on this machine but it sounds like the steam is not being allowed out into the tub. It looks like pictorial part U357 is a nozzle in the front ring that is most likely plugged.

appliance parts pros/tub-drum-assy-parts-for-samsung-wf448aaw-xaa.html

 

Been holding off answering as I have never worked on that part.

 

It's the only thing that makes sense. If the steam can't get out it has to go somewhere and it seems to melt the check valve assembly.

I would think that they made the check valve out of a material that would handle a normal flow of steam. I couldn't find anyplace where Samsung was replacing those valves under extended warranty.

 

PJmax and DRango, you both called it. I have owned this washer since 2009 and had the problem with the melting check valve after approximately a year after noticing an unexplained water leak. Turns out it was the steam leaking at the top and condensing and running down the inside of the washer ending up on the floor. I ordered several more check valve assemblies and replaced the melted one. I ended up deciding to opt out of using the steamer to ensure the leak would not come back. However, my daughter-in-law who was house sitting one week decided to bring her laundry over to my house because of how well she noticed the steam option had cleaned her clothes in the past; she was unaware that I did not want the steam option used. I came back the next week and found the unit leaking....again. Unsure of why, I just monitored the leak and made sure our household knew to avoid using the steam option. I was working on removing the defective door lock assembly (which I found out ended up becoming damaged due to a Samsung approved repairman replacing a broken interior door glass when the washer was still under warranty, but he failed to line up the door catch after reinstalling the door and the catch was too low and ended up damaging the receiver portion of the lock assembly. Very frustrating indeed.) Anyway, found the hose blown almost off of the end of the valve coming from the steam generator and melted again. I decided to google the "melted checkvalve issue" and found this thread. After reading both your posts, I realized that mineral deposits forming and blocking the steam nozzle a very sensible and probable cause. Sure enough, after disconnecting the hose clamp and removing the nozzle, it was COMPLETELY FULL of hard water mineral deposits thereby trapping any steam generated inside the lines, allowing the temperature to rise high enough to start melting the check valve. I blew out what I could and am soaking in vinegar to get the nozzle completely free of deposits. Since I do not have use a water softener, I have to be more diligent in watching for deposits. Additionally, I may decide to remove the steam generator and attempt to find a way to clean it as well. Thanks to you both for your insight into this issue.