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

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Error code brand new just installed it and i get an ER and then flashes uo 4000 series aquasurgefrigidare

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Re: error code

We had the same problem with our Frigidaire dishwasher (different model though). 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 Dec 29, 2007

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Re: error code

Our is brand new as well is this a vent that we fix or do we have to wait for repair man?

Posted on Oct 26, 2008

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Frigidaire dishwasher error code

Hello Teresa Ann - Typically error code UO indicates that while the dishwasher is in wash cycle, the main control board is not receiving signal from the vent assembly and that the vent plunger is in a closed position. A professional will need to check the wiring between both parts and depending from the results either part may need replacing.

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Sep 05, 2009 | Frigidaire 24 in. FDB1050REC Stainless...

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Aug 23, 2009 | Frigidaire 24 in. PLD3465REC Stainless...

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Frigidaire 4000 series dishwasher error code

This is likely an indication of a problem with the circulation pump motor under the dishwasher like maybe a bad circulation pump motor but the only way to know for sure is to do some electrical testing with a volt/ohm meter and the wiring diagram located within the appliance.

Go here for Frigidaire Dishwasher Parts:

Feb 03, 2009 | Frigidaire 24 in. FDB1050REC Stainless...

9 Answers

Dishwasher er error code

I have a similar problem with my Frigidaire FDB4050LHS1. My Owner's Manual says to contact the Customer Care Center if the display shows "Er", "uF", or "CE". When I called them, Maria didn't have a clue what the codes meant - all she could do was give me phone numbers to authorized service centers in my area.

I managed to get ahold of a "SERVICE DATASHEET" P/N: 154718601. The error code "ER/ER" means there is a "switch failure"; "ER/CE" denotes a "Configuration Error"; "ER/uo" means "Vent will not close"; and "ER/UF" means "Fan not running".

The schematic only labels three switches - labeled "USER INTERFACE SWITCH", "DOOR SWITCH", and "FLOAT SWITCH". There is also a switch in the pump motor assembly. If either the door or user interface switch is faulty, then you probably won't be able to do anything other than call a repair service - unless you know how to replace these switches yourself.

If the float switch is causing the error, you might be able to run the "Water/Service Test". From "PF" (denoting a Power Failure) or idle mode (with no lights on whatsoever), press and hold the "DRY/AIRDRY" and "START/CANCEL" buttons at the same time for 3 seconds. This will start an 8-stage test that runs for about 7 and 1/2 minutes. The display will show which step the test is in until it shows an error code. Step 1 tests the water valve, which is where the float switch is located. If that switch is bad, you will likely see "Uo" displayed within the first minute of the test.

Aug 24, 2008 | Frigidaire 24 in. FDB1050REC Stainless...

20 Answers

Error code ER then UO any ideas?

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.

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