18 month old delonghi dishwasher is working but the bottom rack of dishes comes out unclean. ive observed that the top spray arm is spraying but the bottom spray arm is stationary throughout the entire wash cycle.ive inspected the bottom spray arm and its clean and clear,removed base plate hoses are ok,no leaks. what do you think it could be?
Thanks akubra_lands, it worked for me too on model DW28W. I thought I should elaborate on your answer for anyone else who comes across this while researching the same problem. The repair is ridiculously simple (takes about 10min) and the only tools needed are 1 philips/posidrive screwdriver and 1 flat blade screwdriver. Assuming you've unplugged it from mains power:
Tip the dishwasher on its right hand side (looking from the front).
Remove 4 screws from the metal base - 2 front and 2 rear (the rear ones have anti-rattle washers on them).
Pull the base away, taking care of the pair of wires leading to the flood indicator float switch which is still attached to the base.
Remove all 4 screws which fasten the solenoid valve to the pipe which leads from the pump upwards to the center of the tank (which feeds the lower spray arm).
Pull the solenoid/valve body off the pipe and you will see it has a whitish plastic flap with a hinge at the top end.
Use the flat blade screwdriver to gently prize open one side of the flap hinge and twist the flap until it is completely free of the valve body. Put the flap to one side.
Replace the valve body, without the flap, and secure all 4 screws.
Reassemble the dishwasher. Done
Now take a moment to admire the handiwork of the engineer who planned the failure of that innocent little plastic flap around 6 months after the expiry of the warranty. I actually had a repair man come and look at the problem, and yep, right on cue, he told me it needed a new pump motor. $300. When he realised I was on to him he just gave up. So hard for repair people to do an honest day's work these days..
I removed the half wash solenoid on the side of the water pump and notice the plastic flap was ajar and getting forced down with water pressure even though half wash hadnt been selected. i removed the plastic flap, replaced solenoid and bottom spray arm works fine now. we never use the half wash cycle so it was a good result for us.thanks for all your help. regards rob
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If you are observing that the dishes are not clean, then you’ll need to follow certain steps to be sure where exactly the issue. First thing to check for is the detergent cup and spray arms. Check if the dishwasher’s spray arms are working fine and all the holes of the arms are clear. Now try using a different detergent like gel or liquid based detergent to see if it helps.
Dishes are left unclean when the dishwasher is not filling in properly or when the water pressure is low. Check for water pressure and water inlet valve. The water inlet valve if faulty will draw very little or no water. However, if you observe that water pressure is fine and there is no issue with the Fill valve then check whether the dishwasher is draining. If it’s not draining then see if the drain hose is plugged or clogged. If drain hose is fine and the dishwasher is still not draining then there is some issue with the drain pump or drain filter. To check this you’ll need to disassemble the dishwasher and trace back the drain hose to a pump, remove the drain hose from pump and clean the debris from the pump and filter. Make sure you have lots of towels as there would be a lot of water coming out from the pump.
Next thing to check if the dishwasher is draining and filling properly is water temperature. Water temperature should be between 120 and 140 F. If water is not hot enough then heating element has gone bad, to check the element you’ll need a multimeter. Use the multimeter and check if the Rx1 reading on the meter shows reading between 1200 (1.2K) ohms and 1500 (1.5K) ohms, if not the heating element has died.
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The problem is hard water and your softener must not be taken it all out. There is a new product out called the dishwasher filtration system.It filters the water before it enters your dishwasher. It works amazing and has a money back guarantee.You will love the way your dishes look after the first load. It is also very affordable (like 70 bucks). Go to www.dishwasherfilter.com to find out more info.
Position the spray arms in a certain position. Activate the dishwasher for a few seconds and then examine the position of the spray arms. If the upper spray arm has not moved, then either there is no water coming to the spray arm or the spray arm is clogged.
Possible that the motor impeller has good particles in it, causing poor water pressure, which would be most evident on the top rack. You would have to remove the spray arm, then the filter, then the torx screws to get at impeller....unfortunately, that model of dishwasher isn't the greatest in the first place for washing, since it only has the one spray arm.
try using dishwasher majic or a cleaner / ck the holes in wash arms as the must be clear . clean srreen in bottom and make sure the water tempt is hot enough .min 130 to 140 deg . low water tempt cause=s most dw washability problems . + a fresh dergt. podwer is best as liq freeze in winter and are no good. //**** .hope this helped .
In my experience, you probably have a clog in the spray arm/arms for the top rack. Take the arm(s) out and see if the holes in them are clogged. Rice, plastic wrappers, and glass from dishes that broke in there are the most common culprits I've seen.
If you have checked everything that was mentioned (and none of them are the issue) then either the heater inside the unit is not coming on during the wash and rinse cycles and/or the fan motor inside the door is not coming on during the dry cycle. A technician can easily check this out with the correct tools and by putting the unit into test mode.
As for the top rack dishes being dirty and there being soap left in the dispenser, this sounds like wash motor is either weak or the vario motor is not switching between the upper and lower spray nozzles. The sump assembly should be replaced for this issue.
unfortunately, there is no way to run it and see what it is doing. the only way to check if the spray arms are working properly is to put your ear up to the dishwasher while it is running. you should hear the water spraying along the door panel on both the top and bottom ( Note: some dishwashers run the spray arms simultaneously and sometimes they run at seperate times ).
another thing to check is your water temperature. the water must be 120 degrees in the dishwasher in order to clean the dishes properly. also, if your kitchen sink takes a while to get hot water, you will need to run the sink first prior to starting the dishwasher. I have to apply this method at my house because it takes a while for the water to get hot at my sink. if I run it without starting the sink, the water in the dishwasher is 80 degrees or so and will not clean properly. Joe
Our control panel is fine. For now. (The machine is only 3 months old). This is our problem--and I haven't yet seen this complaint at all over the internt: The lower wash arm is getting stuck on the bottom rack and stopping immediately. This seems to be a design flaw. The bottom rack is just built too low. A service man was out once. He tightened the wash arm. Didn't work. The service department at the dealership is now ignoring our subsequent calls!! So I wonder if the "not cleaning" problem you have is because of this.
there is a new product out that filters the water going into your dishwasher. it works great and my dishes look fantastic. they use to look dirty with a white film on them. after the first load when i hooked up the dishwasher filter my dishes looked brand new. it is affordable and works everytime. you can get it at www.dishwasherfilter.com.