Apparently no water pressure to upper washing arm.

Hello ddux97 - Here are a few simple troubleshooting tips that may help you resolve this issue:

· Do you have hard water? Hard water is the primary reason to cause soap residue. Water hardness can be determined by the local water supply company, water treatment company or via a water hardness test kit, which can be found at local part distributors or hardware stores. Some kind of water softening is recommended, in areas where the water hardness is 12 grains or higher. For very hard water a home water softening system would be recommended.

· Will the upper spray arm rotate freely? If it does not, then there isn't enough water being pumped to the spray arm or the full flow of water is not making it to the upper spray arm. Remove or replace the spray arm assemblies since it is possibly damaged.

· Confirm that the drain hose is strapped up properly under the sink to prevent the water from siphoning out during the cycle.

· Dishwashers require the water inside the unit tank to be 120F to perform properly. Best way to ensure this happens is to run the sink faucet until the water comes out hot before the dishwasher is turned on. This will ensure that hot, 120F water goes directly into the dishwasher when it starts to fill. When checking dishwashing detergent boxes and with detergent manufacturers, the compounds in the detergent need water temperatures to be between 125F - 140F to dissolve in the dishwasher. The water pressure should be 20-120 psi (pounds per square inch). If it is too low, I recommend reaching out to a plumber to further assist you.

· Rinse aid dispenser should be checked and filled about once a month depending on the number of washes you do in a month since this will cause cloudy dishes and soap residue.

If these basic troubleshooting tips prove ineffective, then at this point, I would recommend having a service technician to diagnose the problem before investing in unnecessary parts.

Both upper and lower washing arms operate on the water pressure and angle of water flowing thru them.
Pressure provided by water pump.

Just about anything that contacts the rotating arm can stop it.
Best thing to do is re-arrange items in dishwasher so that arms can spin freely.
One can always spin washing arms by hand to ensure proper clearance.

Hope this helps...

Hi,

The most likely answer is that your upper rotor spray arm isn't spinning or spraying water. They aren't powered by a motor - they are driven by water pressure. The most common reason for them not spinning is a blockage somewhere. The lower rotor arm is spraying dirt from the plates in the lower rack onto the glassware and there is no spray from the upper rotor arm to rinse it off.

Check the small spray holes on the top of the upper rotor arm. If they are blocked, use a large pin or a cocktail stick to clean them out. If they aren't blocked, check to see whether the upper rotor arm is spinning by following these steps:

1. Note the exact position of the upper spray arm or spin it so that it is running precisely left to right or front to back
2. Close the door
3. Start any wash cycle
4 After it has finished filling with water and starting cycling the water, open the door and note the position of the upper spray arm again.

If the spray arm is in the exact same position as when you closed the door it's almost definite that it's not spinning. In this event, cancel the wash and do the above test one more time just to eliminate the element of pure chance.

Try the above tests and checks and then post back with the results if you need any further assistance. If posting back, please include the full model number of your Frigidaire dishwasher

Regards,
BElectric.

Take it apart and clean it, water pressure should spin it around, there are bits of food/rice plugging it and stoping it from rotating.

replace the upper water arm conduit and wash arm hub as they leak under years of pressure and the o-rings leak water and then it can't hold pressure and supply the upper arm with full pressure water,also replace the center arm conduit if it has one as this will wear out too

Possible causes of spray arm inefficiency:
Loading large or tall items in the lower basket which stops the arm revolving.
Upper spray arm split along seam.
Upper spray arm blocked.
Under dosing of powder causing foam and reducing upper spray arm water pressure.
Blocked strainers reducing water to circulating pump, therefore reducing upper spray arm water pressure.
inefficient wash motor impellor (faulty)

On the LG LDF xxxx dishwasher family, the Vario feature uses a motor/check valve to switch between "full power" cleaning from _either_ the lower or the upper spray arms, never at the same time. So, not seeing the upper arm spin during the lower arm spinning is standard operating procedure.

But back to your problem. Step one would be to remove the filter assembly again and make certain that there is nothing (debris, broken glass) blocking the white areas where the check valve rotates to switch between upper/lower spray arms. A blockage there ~could~ cause impotent spraying/cleaning.

If there is no blockage and the impeller remains in good shape, suspect a failing wash pump motor. Try to isolate the noise to that motor.

Watch for error codes on the display and report back what you find, OK?

Good Luck!

first check the wash arm ... check the holes in the wash arm . make sure that they are not plugged.

next check that the wash arm is moving . spin it to check that it is free.

next check that there is water pressure to move the wash arm... let me know

I had similar problem. the problem was due to having not enough water pressure in the line to the upper srapy arm. Did the following:

1. removed debris from sump assembly;
2. removed wash motor and clean clogged separation screen; and
3. sealed with Teflon tape manifold and probe manifold of the upper sray arm.

If you google for 'whirlpool 8178022' you should be able to get KD-12 repair manual.

Goof luck.

Amjad

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 :)