Low water pressure, water is coming in but not with enough force to spin the lower or upper spray arms. Water temp at fawcet is well above 120 degrees and water pressure at faucet is normal. Unit drains properly but is not cleaning due to the lack of internal water pressure. Is there a pumping system that augments the normal line pressure that provides enough water pressure to spin the arms that may not be working at 100% or alternatly a water filter on the inbound water line that may be cloged?
Thanks
Joel
SOURCE: Upper arm does not spin
No I don't believe its the pump. I believe the lower spray arm is possibly split open on the side causing a loss of presure and flow to the upper arm and overloading the door seal. As well the loss of flow to the upper arm will resulted in it turning too slow.
SOURCE: Upper rack dishes not coming clean.
You could try running it with the upper arm removed, just so you could be sure that the pressure is not getting to that point - unless you are absolutely sure the upper arm holes/channels are all clear then descale it overnight with some vinegar - just might clear something. if there is obviously only a little flow of water then perhaps you could try getting vinegar into the supply pipe using a basting bulb/syringe or similar - again leave overnight and you may get lucky. The next thing would be to take the machine apart so you could follow this hose through to the pump - undo it from the pump and blow through it or see if you can get a piece of wire in it from the pump end. try vinegar again. check the pump outlet for blockage. Hope this helps :)
SOURCE: I have a Frigidaire Ultra
I may have the answer. I had what sounded to be the same problem. I found the dishes were dirty after they were cleaned, but I found there may have been a big pot lid blocking the upper arm. I decided to run the machine again, and after a bit opened the dishwasher after to make sure it was not a problem with the arm. Sure enough, the arm wasn't moving. However, I found out on the Frigidaire webpage that some models have an alternating spray cycle, where only one arm spins at any given time. After reading this I checked again, and it had moved by that time. I checked a few times more to confirm this. So it ended up it was an arm blockage after all. Hope this helped...good luck.
www.frigidaire.com/support/FAQ-Dishwasher.asp#6
SOURCE: frigidaire fdb949gf dishwasher won't spray water from arms
I found on my first dishwasher the arm holes were plugged. I had to clean out each and every hole with a small wire. They would not even turn until I cleaned them God luck.
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