Question about Siemens 24 in. SL84A305UC Built-in Dishwasher

2 Answers

Dishwasher won't drain all the way

New Siemens dishwasher, istalled and hoses connected with no kinks or bends in them. Ran the cycle fine but at the end when we opened the machine, the bottom was still full of water. Closed and it drained a bit each time we closed it, but it still never fully drained.

Posted by Lea Hairston on

  • 5 more comments 
  • jameboz Apr 24, 2008

    same prob. 2 year old siemen model...goes through cycle fine, then still has water on the bottom. Cancel/Drain...a little will go down at a time, but because water is still in bottom, it stinks and nothing dries

  • guy241 Jul 30, 2008

    I have a 3 years old dishwasher and washes great. Now for the fisrt time I opened the door and found it full of water. Try to cancell wash and nothing happens. Still washes just fine. Just won't drain. Does the pump run backwards to drain and forward to wash

  • thehills_ca Aug 10, 2008

    Dishwasher does not complete drain and dishes have film, like dirty. How do you drain the unit?

  • Craig Olson
    Craig Olson Nov 05, 2008

    I have the same problem. 3 year old unit, runs all cycles, does not drain. Lines are totally free. Appears we paid a premium for a piece of junk.

  • Anonymous Nov 19, 2008

    water wont drain anymore

  • Anonymous Dec 27, 2008

    Same problem here. Washes fine, but does not drain water out of tub. Drain hose has been checked for clogs, none found. Machine can be drained manually by switching on and pressing the 2 buttons marked "cancel drain" until "clean" light turns out and closing the door. This may need to be repeated a few times for a full drain.
    So it would seem that the impeller works fine and even the drain pump works to some extent, but just not good enough.


  • Anonymous Dec 28, 2008

    Update: opened up machine, checked drain hose, no obstructions except some debris in air gap/water inlet. Applied power straight to pump: pump works. So, issue is not the pump itself. The pump is partially controlled by the water level module, but that seems to work fine.

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After cleaning the air gap thingy my machine works fine again. This thing sits on the left lower back side of the machine (left when you are standing in front of the machine). It is a transparent plastic box with 3 hoses attached (drain hose from pump, drain hose to the outside and water). Inside the box is a black plastic float. If debris gets caught in there the float gets stuck.
Solution is to remove the part by pulling the 2 drain hoses out (there is a small black clip holding them in) and unclamp and remove the water hose. Rinse and shake the housing until the float moves freely again and reassemble.

Posted on Dec 28, 2008

  • 6 more comments 
  • Anonymous Jan 03, 2009

    Update on my last solution: machine ran fine for 3 cycles then did not drain completely again. Although I thought the drain was not blocked (I checked the part from the under sink knock out to the machine) on closer inspection I did find an obstruction. In my case it was an apple stem caught just behind the back flow prevention valve.
    Here is how to check: open machine and remove the round filter and larger flat filter from the bottom. Inside the white plastic tub on the left side is a plastic cover over the entrance to the pump held by a single star (torx) screw, size # T20. Remove screw, pull cover and now you are looking at the light blue pump wheel. Check if it runs freely and remove any debris. Just behind the wheel is a black rubber strip. This is the top of the back flow valve. Pull it out, check its integrity and check for anything preventing the valve from opening all the way. This is where I found my problem; the stem was wedged behind the valve so it could not open all the way. This caused the machine to drain incompletely.
    For good measure you can unhook the drain at the under sink knock out and counter flush it now you have the back flow prevention valve out to make sure there is no other debris blocking the machine. Reassemble in reverse order.
    In retrospect I should have done this first before pulling the machine from underneath the counter and opening it up.


  • Anonymous Jan 03, 2009

    Update: after cleaning as described above the machine worked fine for 3 cycles then again drained incompletely. I thought I had no blockages and checked the hose from its connection to the machine to the under sink knock out.
    What I found later was an apple stem caught behind the back flow prevention valve in the machine. This prevented the valve from opening all the way, causing incomplete draining.

    This is how to check: remove filter (the round and flat part on the bottom of the machine. In the white plastic tub on the left side is a cover held with 1 star (Torx) screw size T20. Remove screw and cover; you are now looking at the light blue pump wheel. Make sure it runs freely. You can also see a small black rubber strip; this is the top of the back flow prevention valve. Pull the valve out, inspect for integrity and check for any blockage behind the valve. This is where I had my problem.
    Once the valve is out you can disconnect the under the sink hook up and reverse flush the drain to check for any other debris; it will wash back into the tub of your dishwasher. Once satisfied that the WHOLE drain is free assemble in reverse order.
    In retrospect I should have done this before pulling the machine from under the counter.


  • Anonymous Jan 03, 2009

    Update: after cleaning as described above the machine worked fine for 3 cycles then again drained incompletely. I thought I had no blockages and checked the hose from its connection to the machine to the under sink knock out.
    What I found later was an apple stem caught behind the back flow prevention valve in the machine. This prevented the valve from opening all the way, causing incomplete draining.

    This is how to check: remove filter (the round and flat part on the bottom of the machine. In the white plastic tub on the left side is a cover held with 1 star (Torx) screw size T20. Remove screw and cover; you are now looking at the light blue pump wheel. Make sure it runs freely. You can also see a small black rubber strip; this is the top of the back flow prevention valve. Pull the valve out, inspect for integrity and check for any blockage behind the valve. This is where I had my problem.
    Once the valve is out you can disconnect the under the sink hook up and reverse flush the drain to check for any other debris; it will wash back into the tub of your dishwasher. Once satisfied that the WHOLE drain is free assemble in reverse order.
    In retrospect I should have done this before pulling the machine from under the counter.


  • Anonymous Jan 03, 2009

    Update: after cleaning as described above the machine worked fine for 3 cycles then again drained incompletely. I thought I had no blockages and checked the hose from its connection to the machine to the under sink knock out.
    What I found later was an apple stem caught behind the back flow prevention valve in the machine. This prevented the valve from opening all the way, causing incomplete draining.

    This is how to check: remove filter (the round and flat part on the bottom of the machine. In the white plastic tub on the left side is a cover held with 1 star (Torx) screw size T20. Remove screw and cover; you are now looking at the light blue pump wheel. Make sure it runs freely. You can also see a small black rubber strip; this is the top of the back flow prevention valve. Pull the valve out, inspect for integrity and check for any blockage behind the valve. This is where I had my problem.
    Once the valve is out you can disconnect the under the sink hook up and reverse flush the drain to check for any other debris; it will wash back into the tub of your dishwasher. Once satisfied that the WHOLE drain is free assemble in reverse order.
    In retrospect I should have done this before pulling the machine from under the counter.


  • Anonymous Jan 03, 2009

    Update: after cleaning as described above the machine worked fine for 3 cycles then again drained incompletely. I thought I had no blockages and checked the hose from its connection to the machine to the under sink knock out.
    What I found later was an apple stem caught behind the back flow prevention valve in the machine. This prevented the valve from opening all the way, causing incomplete draining.

    This is how to check: remove filter (the round and flat part on the bottom of the machine. In the white plastic tub on the left side is a cover held with 1 star (Torx) screw size T20. Remove screw and cover; you are now looking at the light blue pump wheel. Make sure it runs freely. You can also see a small black rubber strip; this is the top of the back flow prevention valve. Pull the valve out, inspect for integrity and check for any blockage behind the valve. This is where I had my problem.
    Once the valve is out you can disconnect the under the sink hook up and reverse flush the drain to check for any other debris; it will wash back into the tub of your dishwasher. Once satisfied that the WHOLE drain is free assemble in reverse order.
    In retrospect I should have done this before pulling the machine from under the counter.

  • Anonymous Jan 03, 2009

    pdate: after cleaning as described above the machine worked fine for 3 cycles then again drained incompletely. I thought I had no blockages and checked the hose from its connection to the machine to the under sink knock out.
    What I found later was an apple stem caught behind the back flow prevention valve in the machine. This prevented the valve from opening all the way, causing incomplete draining.

    This is how to check: remove filter (the round and flat part on the bottom of the machine. In the white plastic tub on the left side is a cover held with 1 star (Torx) screw size T20. Remove screw and cover; you are now looking at the light blue pump wheel. Make sure it runs freely. You can also see a small black rubber strip; this is the top of the back flow prevention valve. Pull the valve out, inspect for integrity and check for any blockage behind the valve. This is where I had my problem.
    Once the valve is out you can disconnect the under the sink hook up and reverse flush the drain to check for any other debris; it will wash back into the tub of your dishwasher. Once satisfied that the WHOLE drain is free assemble in reverse order.
    In retrospect I should have done this before pulling the machine from under the counter.

  • Anonymous Jan 03, 2009

    pdate: after cleaning as described above the machine worked fine for 3 cycles then again drained incompletely. I thought I had no blockages and checked the hose from its connection to the machine to the under sink knock out.
    What I found later was an apple stem caught behind the back flow prevention valve in the machine. This prevented the valve from opening all the way, causing incomplete draining.

    This is how to check: remove filter (the round and flat part on the bottom of the machine. In the white plastic tub on the left side is a cover held with 1 star (Torx) screw size T20. Remove screw and cover; you are now looking at the light blue pump wheel. Make sure it runs freely. You can also see a small black rubber strip; this is the top of the back flow prevention valve. Pull the valve out, inspect for integrity and check for any blockage behind the valve. This is where I had my problem.
    Once the valve is out you can disconnect the under the sink hook up and reverse flush the drain to check for any other debris; it will wash back into the tub of your dishwasher. Once satisfied that the WHOLE drain is free assemble in reverse order.
    In retrospect I should have done this before pulling the machine from under the counter.

  • Anonymous Jan 03, 2009

    pdate: after cleaning as described above the machine worked fine for 3 cycles then again drained incompletely. I thought I had no blockages and checked the hose from its connection to the machine to the under sink knock out.
    What I found later was an apple stem caught behind the back flow prevention valve in the machine. This prevented the valve from opening all the way, causing incomplete draining.

    This is how to check: remove filter (the round and flat part on the bottom of the machine. In the white plastic tub on the left side is a cover held with 1 star (Torx) screw size T20. Remove screw and cover; you are now looking at the light blue pump wheel. Make sure it runs freely. You can also see a small black rubber strip; this is the top of the back flow prevention valve. Pull the valve out, inspect for integrity and check for any blockage behind the valve. This is where I had my problem.
    Once the valve is out you can disconnect the under the sink hook up and reverse flush the drain to check for any other debris; it will wash back into the tub of your dishwasher. Once satisfied that the WHOLE drain is free assemble in reverse order.
    In retrospect I should have done this before pulling the machine from under the counter.

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Anonymous

I have a siemens Model SL34A and it will run the whole wash cycle but at the end it is still full of water and will not drain . Tried drain declogger and checked all the hoses for clogges and dose not appear to be the probblem.

Posted on Feb 13, 2008

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