Question about LG LDF6920ST Stainless Steel 24 in. Built-in Dishwasher
Bottom spray arm dose not work. Top works great
The LG LDF6920 dishwasher has an innovative "Vario" motor/check valve. It switches between full power spray on the upper arms and the lower arm. So, if you are looking inside the dishwasher to see which arm is spinning, you just have not opened it when the lower arm is turning.
if the root problem is that your dishes are not getting clean with this water conserving DW, go out and buy a name brand detergent powder - like Electrosol or Cascade. And use less powder then you have been using.
Posted on Apr 07, 2009
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Posted on Jan 02, 2017
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Please check if something is blocked near the top spray arm, also make sure that all holes are oopen. Use a sharp metal pin to clean the holes on the top spray arm. Make sure the water pressure is not low.
under the screen and youl'll need a Torx driver to get to it after you remove the spray arm and screen. Check to see that the path it travels is clear. I have seen these get blocked up by stuff.
Now check if the top arm spins freely and check the bearings for the arm, if they are producing extra friction while the spray arm spins. Hope this helps... Please post back if you need more assistance.
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