I have a GE Profile, GSD4930X73WW, dishwasher. The upper wash arm is not spraying well at all. I checked the water line from the pump to the upper arm and it's fine. I cleared the filters and cleaned the float. I also took the inlet valve off and cleaned the screen. Although the washer works better overall, the upper arm still does not work well. Nothing appears to be in the upper arm assy to clog water from spraying out. All seems clear from the turbid sensor (next to the pump) through the spray assy itself. Oh yes, the bottom spray arm works just fine. Any ideas would be appreciated!

There is a plastic filter down inside the pump inlet that clogs up on these. It can be difficult to remove without breaking things.

If you need further help, I’m available over the phone at https://www.6ya.com/expert/jeffrey_634abadf963e31e5

HI,

If the water doesn't drain from your dishwasher, check these:


Drain line/air gap A clog in the drain line or air gap (if there is one) is the usual reason that a dishwasher won't drain. Often the problem is at the point where the drain line attaches to the garbage disposer or household drain line. If you remove this line, you can clear any debris from the hose or hose connection. Be sure to reattach the hose before starting the dishwasher again.

Pump Your dishwasher pump ejects the water. The pump is usually mounted directly to the motor, then attached to the bottom of the dishwasher. You can reach the pump from inside the dishwasher, but first you need to remove the lower rack, the spray arm, and the spray arm support.

Look for an impeller--a round plastic fan blade-type of device that spins around. This is the wash impeller, which forces the water through the spray arm. Beneath the wash impeller is the drain impeller, which is similar in size and shape to the wash impeller. The drain impeller pushes the water toward the drain port. These components make up the pump. If any of the pump components are defective, you need to replace them.

Drain valve and/or solenoid Many dishwashers use a drain valve with an electric solenoid. When electricity flows to the solenoid, the valve opens and diverts the water to the drain. Sometimes the solenoid, or the diverting lever, sticks and prevents the dishwasher from draining or filling properly. Try to free up the solenoid to lubricate the lever. Otherwise, you may have to replace the solenoid or pump assembly. With these systems, the motor always rotates in one direction. When it's energized, the drain valve diverts the water.

Other dishwashers simply reverse the direction of the motor to drain the dishwasher. These units don't have a drain valve. Instead, there's a drain hose connected directly to the pump housing.

Belt One brand of dishwasher uses a belt to drive the pump. If this belt is broken or has fallen off, replace it.

Motor If the motor isn't turning or working, the unit won't drain. First check to be sure you have power to the dishwasher. If not, see the section "It doesn't work at all." If the motor hums but doesn't turn, it may need to be replaced.

Some dishwashers are susceptible to getting stuck if you don't run them regularly. If you haven't run the dishwasher for more than a week, you may need to manually spin the motor to free it up. If the motor is defective, you need to replace it. Dishwasher motors can't be serviced.

Timer Part of what the timer does is control the motor and drain valve. If the timer doesn't work properly, the water may not drain and you need to replace the timer. This problem is uncommon.

If there is no blockage, your pump may need to be rebuilt or replaced. If your machine uses a solenoid valve to control weather the pump is washing or draining. The drain valve may be stuck somewhat open, diverting wash water down the drain. Or the wash valve may be not opening fully. Different machines work in different ways.

Hello there again
I think we got disconnected in the chat room so i will post the solutions here for you to check ok
The water doesn't drain from the machine If the water doesn't drain from your dishwasher, check these: Drain line/air gap A clog in the drain line or air gap (if there is one) is the usual reason that a dishwasher won't drain. Often the problem is at the point where the drain line attaches to the garbage disposer or household drain line. If you remove this line, you can clear any debris from the hose or hose connection. Be sure to reattach the hose before starting the dishwasher again. Pump Your dishwasher pump ejects the water. The pump is usually mounted directly to the motor, then attached to the bottom of the dishwasher. You can reach the pump from inside the dishwasher, but first you need to remove the lower rack, the spray arm, and the spray arm support. Look for an impeller--a round plastic fan blade-type of device that spins around. This is the wash impeller, which forces the water through the spray arm. Beneath the wash impeller is the drain impeller, which is similar in size and shape to the wash impeller. The drain impeller pushes the water toward the drain port. These components make up the pump. If any of the pump components are defective, you need to replace them. Drain valve and/or solenoid Many dishwashers use a drain valve with an electric solenoid. When electricity flows to the solenoid, the valve opens and diverts the water to the drain. Sometimes the solenoid, or the diverting lever, sticks and prevents the dishwasher from draining or filling properly. Try to free up the solenoid to lubricate the lever. Otherwise, you may have to replace the solenoid or pump assembly. With these systems, the motor always rotates in one direction. When it's energized, the drain valve diverts the water. Other dishwashers simply reverse the direction of the motor to drain the dishwasher. These units don't have a drain valve. Instead, there's a drain hose connected directly to the pump housing. Belt If the motor isn't turning or working, the unit won't drain. at all." If the motor hums but doesn't turn, it may need to be replaced.

First,

See this link for a picture of the upper spray arm and manifold assembly.

http://www.apwagner.com/index.php?main_page=model_lookup&model_num=KUDP02IRBL0&model_id=163723&diagram_id=380403

Referring to parts 1, 6, and 9, make sure everything is attached, secure, and lines up when the upper rack is pushed back into place.

It's possible the pump is obstructed and not delivering water to the upper arm, but the more likely cause is a displaced upper arm feeder tube. If no luck, start checking for obstructions in the feeder tube, manifold and the spray arm.

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)

Hi there,

The water doesn't drain from the machine
If the water doesn't drain from your dishwasher, check these:

Drain line/air gap
Pump
Drain valve and/or solenoid
Belt
Motor
Timer

Drain line/air gap
A clog in the drain line or air gap (if there is one) is the usual reason that a dishwasher won't drain. Often the problem is at the point where the drain line attaches to the garbage disposer or household drain line. If you remove this line, you can clear any debris from the hose or hose connection. Be sure to reattach the hose before starting the dishwasher again.


Pump
Your dishwasher pump ejects the water. The pump is usually mounted directly to the motor, then attached to the bottom of the dishwasher. You can reach the pump from inside the dishwasher, but first you need to remove the lower rack, the spray arm, and the spray arm support. 

Look for an impeller--a round plastic fan blade-type of device that spins around. This is the wash impeller, which forces the water through the spray arm. Beneath the wash impeller is the drain impeller, which is similar in size and shape to the wash impeller. The drain impeller pushes the water toward the drain port. These components make up the pump. If any of the pump components are defective, you need to replace them.


Drain valve and/or solenoid
Many dishwashers use a drain valve with an electric solenoid. When electricity flows to the solenoid, the valve opens and diverts the water to the drain. Sometimes the solenoid, or the diverting lever, sticks and prevents the dishwasher from draining or filling properly. Try to free up the solenoid to lubricate the lever. Otherwise, you may have to replace the solenoid or pump assembly. With these systems, the motor always rotates in one direction. When it's energized, the drain valve diverts the water. 

Other dishwashers simply reverse the direction of the motor to drain the dishwasher. These units don't have a drain valve. Instead, there's a drain hose connected directly to the pump housing.


Belt
One brand of dishwasher uses a belt to drive the pump. If this belt is broken or has fallen off, replace it.


Motor
If the motor isn't turning or working, the unit won't drain. First check to be sure you have power to the dishwasher. If not, see the section "It doesn't work at all." If the motor hums but doesn't turn, it may need to be replaced. 

Some dishwashers are susceptible to getting stuck if you don't run them regularly. If you haven't run the dishwasher for more than a week, you may need to manually spin the motor to free it up. If the motor is defective, you need to replace it. Dishwasher motors can't be serviced.


Timer
Part of what the timer does is control the motor and drain valve. If the timer doesn't work properly, the water may not drain and you need to replace the timer. This problem is uncommon.
sorry to say but there is no images now... i'll try to find some for you.
good luck
thanks

Check spray arms again to see if the very end jet is blocked - or if the spray arm has split? the end jet is angled and that's what turns the spray arm. If you can't clear the blockage, you may need new spray arms. Or try putting the spray arms into a known position, and run the machine - see if they have moved.
The pump may be running, but are you sure it's pumping? sometimes bits of broken glass or pot get into the pump chamber and strip the rotor vanes off. Try setting the machine to wash, make sure you can hear the pump run, then quickly open the dishwasher door to check the flow. If you get a face full of hot soapy water then everything is ok!
Remember that a dishwasher isn't a garbage disposal unit - and remove all food scraps from plates before putting them in the machine. That's what often blocks spray arm jets.

It sounds like you have a model that has a pot washer cycle that blocks water flow to those arms. What cycles are on your keypad? Sounds like you have it set or single rack wash

Run the dishwasher and observe the spray arm,if split it will spray water down: Also check water in tub, is it filling up sufficiently to get near the heater? If it has a upper spray arm does it spray water? If not you may have a clogged upper spray arm.