LG LDF6920ST Stainless Steel 24 in. Built-in Dishwasher Logo
Russell Mau Posted on Jun 20, 2012

Ldf6920st LG dishwasher. Pump runs continuously.

Runs even with power in the 'OFF' mode. Stops only when power plug is removed from power source.

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  • Posted on Dec 24, 2012
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Continuous run of DW "drain pump" is common problem, with simple solution, and without "pulling" the DW!

Because the problem is likely a "stuck float riser assembly", a mechanical "glitch", from crud build up, I recommend trying one "might get lucky fix" first.

Look up above the door and remove (usually two) screws holding two metal "tabs" to bottom of wood counter. This should allow you to "rock" the unit a little. This might allow the float assembly to operate.

A. You have removed and cleaned the screens to the pump inlet and have manually added hot water which the pump removes but the pump just continues to run, even when you open the door? You should still be able to use controls to shut unit off. If not, you should be able to turn DW off at circuit breaker panel. Find and open the breaker any how, because "I'm sending you in!"

There are two sheet metal "plates" about 4 inches high, 24 inches wide below the door on Bosch (and others) dish washers. Remove both, usually they can just be carefully removed.

Lay with face on floor and use flashlight to look "up and into" the left bottom side of the DW. About a foot into the bottom left side of the unit look for a red or orange (usually) plastic rod about the size of a pencil rising vertically out of a thin plastic "tank". This is a "sump" of some sort (???) and the bottom of the rod is a "float". The top of the "pencil" activates a micro switch. Junk in "tank" or on micro switch stops rise of the rod which keeps pump running.

Carefully, manually lift the orange rod with a long wooden spoon. Several times. You should hear the micro switch click. Don't be sticking screwdrivers or anything metal in there. Even with the power off.

Turn breaker back on. This may solve most common problem in first five years for many brands of dish washers.

Good luck.

"Born 33 RPM - now GHz"

5 Related Answers

Anonymous

  • 2920 Answers
  • Posted on Feb 28, 2009

SOURCE: water will not pump out of bottom of dishwasher(LDF6920st)new

you could have a clog in the pump a sock or something along those lines.

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Jeff Meyer

  • 423 Answers
  • Posted on Apr 18, 2009

SOURCE: LG LDF6920ST Dishwasher won't start

With nothing displaying and only the humming sound, it appears that the main controller card (PCB) has most likely failed.

If it were my dishwasher, I would add a pitcher of water (more than two big glasses full), close the door and start a cycle and listen at the drain. The first thing a dishwasher does is run the pump to empty any standing water before it fills up. If you hear that water drain, (and can see that is has drained from inside the dishwasher) it is not as broken as I think it is.

BUT, this dishwasher should be displaying something from the moment you press the power button.

Please post back with what you find and decide you do. OK?

Anonymous

  • 1865 Answers
  • Posted on May 02, 2009

SOURCE: My LG dishwasher stops running 5 mins in

The LE code means there is a problem with the washer motor. ( Motor error ) Condition : The motor is working abnormally. Possible cause : Wiring connections. The impeller of washing pump is locked. The rotor of washing motor is locked. The blade is locked.

Remedy: Correct wiring connections. Replace the cause of restriction. Replace the washing motor. Replace the PCB.

Anonymous

  • 132 Answers
  • Posted on Oct 17, 2009

SOURCE: have lg dishwasher LDF6920ST. Making lound

If the machine works fine other than the grinding sound, there is a blade that is in the center and grinds up residue, somtimes it gets a object in the
space and wont grind it up. If you are ok at taking things apart and puting back together, disasemble the center sprayer, screen and tube to top sprayer, the blade is under the screen housing. clean out and reasemble and should work fine. not hard to do really, when you reasemble do not tighten screws as you intall them as they allign everything, intall then all loose then tighten snug NOT to tight as they go into plastic.

Anonymous

  • 1543 Answers
  • Posted on Dec 04, 2009

SOURCE: Never installed a dishwasher. Want to give it a

For water supply, use a braided stainless steel flexible dishwasher supply hose with 3/8 compression ends on each side and a 3/8 male NPT x 3/8 compression elbow adapter. There is a tee with 3/8 female compression x 3/8 male compression x 3/8 male compression which can be used between the hot water shut off valve and the supply tube to the kitchen sink faucet to get your hot water with no significant plumbing work. Make sure the drain hose does not run straignt down back to the dishwasher. (put a loop up to make sure no dirty water tries to go back to the dishwasher.) If installing drain to a disposer drain port, make sure the knock out plug has been removed. It's also easiest if the floor under the dishwasher is at the same hight as the rest of the floor in the kitchen. Make sure wire nut connections are tight for electrical.

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