Question about Frigidaire 24 in. PLD3465REC Stainless Steel Built-in Dishwasher

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Error code ER then UO any ideas?

It's 30 days old and just started giving me this error code. It fills with water then pops the error code and progress past that part. Error code ER then UO.

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  • howeihe Feb 25, 2008

    same problem, help

  • Anonymous May 17, 2008

    I had this problem when I tried running the dishwasher while I was washing dishes in the sink.

    I tried calling the toll-free number, but it's a dead-end. They give you another number to call, but that number answers only during business hours M-F, and my problem occurred on a Saturday. The Frigidaire web site doesn't have information on error messages. The appliance store where I bought the machine was also useless--the guy at the other end only had the same owner's manual that I do.

    Here's what I figured out: It seems that since the sink and dishwasher drain out through the same
    pipe, the dishwasher sensed something wrong with the drain, and after
    filling with water for a few seconds, it put out the "Er -uo" error
    message. So I drained the sink, opened and closed the dishwasher, and lo and behold, it automatically drained itself. After that, I re-set the program, and it ran normally.

    Mike


  • MikeDur Dec 13, 2008

    This is true the vent on the top right rear does use a small spring assisted sensor (really bad design) over time the tension decreases in the spring therefore the cheesy little peice of plastic which goes into the little cheesy guide gives a false location indication which does try 5 times on fill but fails thus giving you the error. Of course no serviceable parts inside the vent assy. And no mention of the design flaw on the unit itself on Frigidaire.com. (There is NO way they do not know about this design flaw due to today technology) If you goe to their web site there is nothing about error codes and any assistance is out of our pocket. Really - I would love to come back and read a post by the guy - girl that designed this great dishwasher vent assy. But doubt it. Merry Xmas everyone I feal better venting, hoping someone else takes the time.

  • Anonymous Feb 08, 2009

    same problem with getting the Er uo code. I JUST had mine installed, it's never actually even ran!! Not pleased. Any suggestions would be greatly appreciated

  • Anonymous May 05, 2009

    Same problem here; same ER uo code. Discouraging.

  • ontik May 06, 2009

    i have a frigidaire dishwasher when i tried to start it ,all of a sudden the CL, started to flash and sensing & washing small green lights start to blink all together. what can this be

  • Wesley Jan 05, 2013

    Same here. Drain dishwasher and restart cycle. Problem solved.

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So far so good. I fixed mine by removing the vent and even though it says no repairable parts I disassembled it then removed the rubber gasket and cleaned it with a brush under hot water. I then cleaned the plastic ring it seals against. Next I removed the spring and stretched it to make it about a quarter inch longer and then reinstalled the spring then the rubber gasket and then closed up the unit. So far it is working fine. I suspect the real problem is that there is a tiny sensor that needs to be covered when the vent is closed. If this is not covered the uo error code is generated.

Posted on Aug 22, 2009

  • WuhBuh Nov 03, 2010

    Three cheers for Chance_020!!! We pulled out washer out, disassembled the fan box and found our spring loose and partially corroded. I stretched the good piece of spring and reassembled everything. The error is gone!!!

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I had the same Er uo problem. I work at LOWES and asked my Appliance manager for help. He said that it was the control Panel, wich is the same thing the 1-800-944 number said. THIS IS NOT THE CASE. He did give me a hint by suggesting I open the door and take the panel off. I did and low and behold there is a paper with scematic and code definitions cliped inside. After reading that the Er uo code means vent open (and comfirming that from a tip i found on this site. I also read that the vent is located in the upper right hand corner of the top of the unit inside. I twisted the GRAY CAP off and saw the black rubber vent i pulled down and noticed it was glogged with soap. I pulled the dishwasher out and took the vent out and cleaned it and then put everything back together. then ran the dishwasher. it ran with no problems for 30 min. then flashed the same Eruo problem. my thought is that the Vent unit has to be replaced i will post more as i find out.

Posted on Sep 10, 2008

  • Jennifer Nesvig
    Jennifer Nesvig Aug 04, 2016

    After reading everything on this thread, I started investigating. The little black piece that goes up into the sensor that tells the computer if the vent is open or closed is a bit short. We put a piece of black tape on the end to make it longer. Running a test run right now to see if it will finish the cycle. I'm expecting an error when it's time to dry. I'm not too worried if it's drys, just washes!

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Error code "ER" then "uo". Top right of washer is a vent. reached in and ran finger around gasket, removed a small amount of gunk. Pulled down on the plate that holds the gasket a few times which reseated it. Closed washer and now works fine.thanks Chance_ 020! Good advice!

Posted on Nov 08, 2009

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UO error code. Cleaning the rubber seal worked for a week. Then the dishwasher would no longer run. 6 years old this dishwasher has been fixed 3 times. I took the vent apart cleaned it. Still getting the error UO. Even holding the vent open or closed no change. the replacement part is 100.00 to much. I can not recommend any one attempt this but I was able to bypass this vent by connecting the orange and yellow wires. The dishwasher now runs again with out error. I would not use the high heat or sanitize functions anymore. But for a basic wash this will work until I can purchase a new non frigidaire dishwasher.

Posted on Aug 15, 2013

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  • Simon Beaulieu
    Simon Beaulieu Nov 26, 2013

    I tried all the tips in this page and the only one that fix the UO problem is bypass the vent by connecting the yellow and brown wires (picture). I also isolate the wires after with electrical tape.

  • Frank
    Frank Jun 24, 2015

    This worked great. Thank you very much for the information. My wife and I never use the dry heat option anyway. Our dishwasher is 4 years old + so it did not make sense buying a new valve and taking the chance that it might not be the problem. Frank

  • John Balance
    John Balance Oct 28, 2015

    I left them connected and just jumped them. It worked! Know that this will tell the machine that the vent is closed and it's ok to run. If your vent gets stuck open, you are going to get water up there!

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The vent fan on the top right hand side at the back of the dishwasher, has wires coming down the side. The wires were not conected they had to be plugged in. The Er uo code stopped flashing and the dishwasher started working.

Posted on Oct 11, 2008

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I have the er code but not the vo code tryed replacing the control board and messing with the vent but no luck. I turn the power off and then turn it back on it runs for about min. and then goes to the er mode and flashes. there is a s flashing with the er code. what else should i check for?

Posted on Mar 03, 2010

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We had the same problem with our Frigidaire dishwasher. We called them and they said the UO stands for Vent Open (the display can't make a V so it makes a U). The active vent was not closing when it should be closed (the repairman said the gasket was stuck up in the assembly so sometimes it would seal and sometimes it wouldn't) and thus the error. Since our machine was still under warranty, we had the vent replaced at no cost and haven't had the problem since.

Posted on Oct 30, 2007

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To let you know with this error "UO" the heat element stays on. it melted the lower spray arm of my dishwasher while we were out
Chance_20 is right about how to fix it.

Needless to say were going to buy a new one and it wont be Frigidaire.

Posted on Nov 15, 2009

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Trent Williams is right about checking and cleaning the optical sensor. I have gotten the vent open error several times in the past and just opened it and removed the built up soap clogs and everything was fine. This time it wasn't enough. I cleaned around the gasket (what I could reach) and still had the error. Decided to remove the screws and disassemble the valve and clean everything properly. Re-assembled and still have the error. Information said it uses an optical position sensor. It is a small sensor on the very small plain circuit board on the back of the valve where the thin stem from the valve slides through when it is in the up position (mine was black). I removed the valve again and using a small stiff nylon brush and lens cleaner I scrubbed that black sensor piece very hard and thoroughly. Re-assembled the unit again and it is working perfectly now. How long it will last I don't know (only has 3 cycles on it so far), but it may be worth not buying a $100+ part for a while longer.

Posted on Jun 23, 2014

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I had the same issues. I took my dishwasher out, took off the vent and cleaned the gasket. That did not work. I eneded up opening the unit and cleaning the sensor where the vent arm registers its position on the circuit board with a small wire brush, this seemed to do the trick. I am 10 minutes into a cycle so we will see. I found the replacement part online for $60 and I called a repair person and he quoted me $230 to fix it.

Thank you Internet.

Error code ER then UO any ideas? - 3_26_2013_1_39_39_am.jpg

Posted on Mar 26, 2013

  • Lauren Bell
    Lauren Bell Feb 23, 2017

    Where did you find the part for $60?

  • Lauren Bell
    Lauren Bell Feb 23, 2017

    And where is the sensor located? I took it apart last night and cleaned the gunk from the rubber part but did not clean the sensor. Thx

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I had the same issue... cleaned the vent as described in earlier post and everything seems to be working fine now... there was alot of dried soad which obviously was causing the vent to stick. Thanks for the help...

Posted on Mar 17, 2013

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Remove the plastic turn ring on the vent at right rear corner and "slightly' pull down on the rubber part and with a wet hand run your fingers around that part a few times and repeat with a "clean" wet hand...do this a couple times then reinstall the twist lock ring....that fixed mine right up.....it had a lot of white chunks that were easy to clean off with wet fingers....no mour ER UO and away it goes....the "clunk-clunk-clunk" was the tip off that it was stuck.....hobbiehubbcapp

Posted on Mar 03, 2013

  • charles_forg
    charles_forg Mar 03, 2013

    it is working!!!

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  1. I have done all that you have suggested. Thank You by the way....

  2. Dishwasher full of dishes with an error code uo still.

  3. chance 20 has it figured out for washers older than 2 days.

  4. I took the vent appart as suggested.

  5. Prox switch is bad within the vent itself. Even holding the vent in the open possition with the vent assembly closed, produced the error message.

  6. I would suggest that if you have a washer never used with this fault, replace the vent assembly. You will hear a ticking sound in the rear right side. When the unit is in installed possition, it will sound as though it is coming from the main door pannel. The ticking sound is the unit calling for the proximity switch to "make" and the prox not sending the signal that it has "made" thus it retries about 5 times before you get the error message.

  7. I hope this helps someone else, but if you are reading this, you have already made the investment of time....Sorry.
Jamie

Posted on Feb 07, 2010

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The problem is the quick connect that goes to the vent is loose, make sure its nice and tight

Posted on Feb 27, 2008

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I cleaned the vent on the Upper Right top of the inside and it ran. With hard water running through the machine it gets pretty gunked up. The lesson I learned is to clean it more often. I agree though with previous posters that the design is a little chincy for such a machine. Luckily there are sites like these to help, otherwise I would've paid a tech a hundred bucks to come clean some calcium from the little vent.

Posted on Nov 06, 2010

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Tried cleaning the vent, checked the wires,took apart the vent assembly and cleaned the optical sensor with a toothbrush, stretched the spring....Still not working.
Tried Antone's fix.....(jumping the yellow and brown wires from the close sensor)....YES!!! (thx Antone!)
Keep in mind that this "fix" will only trick the machine into thinking that the vent is closed. If the vent ACTUALLY IS OPEN, the dishwasher WILL CONTINUE TO RUN!!!! Water will then be forced up in there, doing all kinds of water damage! This is for diagnostic purposes....or those who like to gamble ;) I wanted to make sure it was the vent and not the control panel as some have said.
My dishwasher ran like a charm! No clicking or stopping. During the dry cycle, the fan runs but the vent stays closed. I DID stretch my spring to make it stiffer tho, so I'm not sure if I had left that alone, the fan may have pushed open the vent?
HTH!!!

Posted on Oct 28, 2015

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Thanks everybody for your help you saved me a service call. Your suggested fixes worked well. ...just had do clean it up and reassemble & Reinstall.

Posted on Apr 06, 2014

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I opened the vent out unit to clean it and noticed a small spring that fell out of the unit. Where does it go back? Anyone knows? thanks.

Posted on Aug 13, 2011

  • Jesse Tribbey
    Jesse Tribbey Oct 18, 2015

    It goes under the arm closest to the solenoid. There is a little plastic plus sign...it sits on that and under the rocker arm.

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I got the same error code, U0. My problem turned out to be the electrical connector where the vent fan assembly plugs into the dishwasher wiring harness. It had gotten wet, and there was green corrosion on the connector pins. The vent was closing, but the corrosion prevented the signal from getting through. Cleaning the corrosion off the pins, and sealing the connector with some dielectric grease (used on auto spark plug boots - available at any auto parts store) solved my problem.

Posted on Dec 13, 2009

  • TwoHandsDown
    TwoHandsDown Apr 06, 2014

    Thanks everybody for your helpfull comments and the pics. You saved me a service call. Your suggested fixes worked well. ...just had do clean it up, reassemble & reinstall.

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Had this "UO" or rather "VO" error code. Found the vent in the inside, upper right. It had some junk on it and in the inside. Scraped it off set the wash program and it took a minute for it to figure things out, then it started. Thanx forum!!!

Posted on Apr 13, 2010

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