LG LDF8812 Stainless Steel Built-in Dishwasher Logo
Posted on May 18, 2009
Answered by a Fixya Expert

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Dishwasher has power and water but rinse arms are not working

LG LDF8812ST has power and water but the rinse arms are not turning.

  • vicky66246 May 22, 2009

    there was a small amount of debris...nothing much to speak of, the filter housing has 2 orings that are located on it, one had come off and they seem to be soft and somewhat squished..LG doesn;t list these seperately and one would assume that they are part of the filtermesh housing, there is an oring beneath this by the sump..it appears to be loose fitting(it is a weird shape..not round) would you advise on replacing this at the same time...or should I put it back together for a test run before I order parts...thanks.

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Jeff Meyer

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  • Posted on May 22, 2009
Jeff Meyer
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Vicky,

I understand that your LDF8812 fills with water (and drains?) but is not cleaning and you are not hearing the unit wash. Are the dishes on either rack getting wet at all?
-Are you getting any error codes in the display?

On LG dishwashers, the upper and the lower arms never spin at the same time. Rather the vario check valve routes all water pressure either up or down.

The arms turn because the wash motor turns the pump (impeller) which drives the water to/through the wash arms. If the wash motor was faulty, you almost always get an error code. So the problem is probably caused by a blockage of the "plumbing" in the sump area beneath the lower wash arms. But first check all three wash arms to confirm that the holes are not blocked. (How cool is it that the light inside this model helps you do that?)

Next use a screw driver to remove the filter assembly in the sump area. There are 10 screws to remove, but first you need to firmly lift the lower spray arm directly up and out.

Inspect the entire sump area for debris. Watch out for broken glass! Look closely at the white area near the back for blockages at the check valve.

Please report back what you find and we will take the next step. OK?

  • Jeff Meyer May 23, 2009

    Replacing the O rings would be a good move before going further.

    Also, confirm that the impeller is tightly attached and spins freely.


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