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Dishwasher not cleaning

I have a HELLER DWH3 dishwasher and the top washing arm is not spinning around. The detergent is just staying in the place where it goes. The water pressure is awesome and i have taken the whole tray out to see if there is a blockage there but there isn't. It is a plastic arm. It is quite wobbly but it spins freely by hand and has only just started doing this so my dihes are not cleaning! I am in New Zealand.

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Hello kiwi
check the water level in machine this may be low due to pressure switch not sensing correct level try blowing back through air tube to clear any water from tube then try again
quick way is to start machine and when in wash mode check water and position of arms then add a litre or so of water in mid wash then recheck wash arms if they are now moving then you have water level problem

Posted on Feb 24, 2008

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The soap does dot dissolve


assuming you are using the correct dishwasher detergent type and quantity recommended for the dishwasher, the likely cause for detergent not dissolving is that the water is not circulating well enough through the wash arm. Check the wash arms are clean. Do dishes come out clean? Run the dishwasher with a cup correct side up on the top rack. If it is empty at end of wash then there is no water in the top arm.

Is the detergent dispenser door open during wash cycle?
Also lack of adequate wash water template can cause detergent to remain undesolved. Hope this helps.

Feb 15, 2011 | Asko D1796FI Built-in Dishwasher

4 Answers

Dirty dishes


It could be a motor or a pump issue. The dishwasher has a motor that attached to a pump which forces the water up into the sprayer arms and during the drain cycle, it pushes the water out of the dishwasher.
The motor (and pump) located beneath the dishwasher.
Check if motor spins. In case it spins, the problem is with the pump ,in case it doesn't spin it could be a motor problem or a motor and pump problem.

First of all: filter plate clean? Clean any locked hole.
1) Can you remove the upper spray-arm and verify if holes inside are locked by any residus. Clean the holes , and check if pure water come out when you fill the center hole with some water.
2) Switch on the dishwasher , coldest wash cycle dish-washer empty and without the upper spraying arm. Once you hear water streaming in, open the door and look if a little water fountain comes out from the center hole where the upper spraying arm was fixed. If not, this canalisation is blocked and should be cleaned. Try to continue the wash cycle, often the water pressure will clean itself this canal. Check also lower spray arm: it should be rotating a while and ejecting water thru its holes. If not, verify this canalisation as well.

3) Put the spraying arm again on its place, verify also the sealing else water pressure is going down and spraying will not turn and spray water.

4) Again, continu a wash cycle, open the door and look; upper arm should be rotating and some rays trown out.

Hopefully, this helps .

If not, pump pressure may be low; have a repair verify, can be that only brushes in the motor must be replaced, can be the pump worn out and to be replaced at all.

Aug 12, 2008 | Asko D1776 Built-in Dishwasher

1 Answer

When I put detergent in dishwasher and turn it on, it seems to go through the cycles, but when it stops, the detergent is still in the detergent bin and the dishes are not clean.


Assuming the detergent dispenser door does open, it is likely the water is not reaching the top arms. Put a cup in normal position on the top rack and see if there is any water in it at the end of the cycle.

Likely causes are blocked arms or water distributor or the wash impeller is not working in the pump. The dishwasher uses the same pump motor for wash and drain cycles. You can check this by hearing if the water is getting swashed around when the wash cycle is on.
Check the impeller and water feed as shown in this diagram.

Hope this helps.

Jan 19, 2011 | Tappan 18 in. MDR251RE Built-in Dishwasher

1 Answer

D/w doesn't dissolve deterg. & therefore not washing dishes


Do this test:
-Upgrade to a name brand detergent like Cascade or Electrosol.
-Do not over fill the dispenser cup
-Do not place large items near the door/near the dispenser cup.
-Make certain that both spray arms can spin freely after you load the dishwasher but before you close the door to begin the wash.
Please report back what you find, OK?

May 20, 2010 | LG 24 in. LDS 5811 Built-in Dishwasher

1 Answer

Top Arm does not spin so glasses are not cleaned and detergent is not rinsed out of holder very well.


Make sure the water level is just at or below the heating element. Low water level will cause the pump to "run out of water" before all wash arms and connecting tubing are filled. A pulsing sound during the wash cycle will verify. Low water pressure or a bad water inlet valve are one cause. Water siphoning ou the drain line is another. Look under your sink and verify the drain line goes from the garbage disposal or sink tailpiece all the way up to the bottom side of the coutertop enroute to the dishwasher.

Apr 27, 2009 | Dishwashers

2 Answers

When the cycle is finished the dishes arent washed, in particular the ones on the top rack. Ive removed the arm that carries the water to the top sprinkler to see if its blocked and it seems to be OK.The...


Being from the US, I have not worked with this LG dishwasher, not any down under.
But the first thing to do is use only a name brand dishwasher detergent powder. Don't use gels or tablets, ever. Many cleaning problems are resolved by avoiding the ultra cheap generic detergent.
If problems continue, confirm that the heating element is still working. Dishwashers need heated water to activate the soap.
If problems continue, my next move would be to remove the gear beneath the lower spray arm and clean everything and remove debris that could be blocking the water flow.
Good Luck!

Apr 08, 2009 | Dishwashers

2 Answers

Dishwasher does not clean dishes, soap does not fully go away


Water Inlet Valve

A dishwasher's water inlet valve is its most common part to fail. When your dishes are not being fully cleaned, quite often a faulty water inlet valve is to blame. Test your dishwasher's water inlet valve, and if it is no longer functioning as it should, you will have to replace it.
Heating Element

Water temperature is a key element in achieving clean dishes. A dishwasher's heating element is not designed to heat the water that enters it. Rather, the heating element is designed to maintain the heat of the water that enters the dishwasher. Its a good idea to run the hot water in your sink for a couple of minutes before you run the dishwasher. Just to make sure the water is nice and hot before it enters the dishwasher. If the water is unable to stay hot, it can adversely affect your dishwasher's cleaning ability.
Filter/Drain Grate

There is a filter in your dishwasher. Its function is to keep large particles of food and foreign objects away from the pump. Many of the newly-manufactured dishwashers have self-cleaning filters, and routine cleaning isn't a concern. However, some other dishw ashers need to have the filter removed and cleaned regularly. If the filter or grate is clogged or blocked with debris, it may interfere with the normal functioning of your dishwasher. Consult your owner's manual for specific directions for removing your dishwasher's filter and cleaning it.

  • filter
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  • . Detergent or Detergent Cup

    It could just be that you aren't using enough soap to completely wash your dishes. Your dishwasher may be designed to dispense soap at two different times during the wash cycle. If you don't fill all of the detergent cups, then the diswasher will lose a cleaning cycle. Also, if you use a gel-type detergent, try switching to a powered kind. Powders tend to dissolve better in hot water. And don't buy in bulk. Detergents are most effective in the first two weeks. After that, they decrease in potency.
    Alternatively, your dishwasher's detergent cup could be defective in some way. It is possible that it is gunked up full of built up detergent, and a thorough cleaning may be enough to get it working again. If that doesn't do the trick, you probably need to replace the entire detergent cup assembly. If your cup isn't even opening, My dishwasher detergent cup won't open.

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    Cycle Selector Switch
    Sometimes a dishwasher's cycle selector switch is the reason why dishes are not coming completely clean. Test your selector switch to determine whether or not it has become defective. If it has, replace it.

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    1 Answer

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