Question about Frigidaire PLDB998A Built-in Dishwasher

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Upper spray arm doesn't move. Replaced inlet

Upper spray arm doesn't move. Replaced inlet valve. Not enough water in machine. Float switch works properly. Manually filled machine with water. Upper arm stays still. Water stops filling prior to float rising.

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  • Frigidaire Master
  • 3,051 Answers

Water-inlet valve Most cleaning problems are caused by the dishwasher not getting enough wash water, so the water-inlet valve is often to blame. This valve is usually at the bottom left or right of the dishwasher, behind the lower access panel. It's the device with the main water line from the house, a rubber tube to the dishwasher, and two wires attached to it. When a water-inlet valve is defective, you may hear the sound that's usually referred to as "water hammer." If the water-inlet valve is defective, you need to completely replace it. Dishwasher Water Inlet Valve Replacement

Be sure to read and understand any instructions that come with the new water inlet valve.

Tools required:

Adjustable wrench

Multi-Screwdriver

Pliers

Step 1. Disconnect the dishwasher from its power source.

Note: Dishwashers are usually wired directly to the home’s electrical system. To disconnect the power, switch off the circuit breaker or remove the fuse for the electrical circuit the dishwasher is attached to. Try to turn the unit on after disconnecting the power to be sure you were successful.

CAUTION: If you’re not sure you’ve shut off the power properly, DO NOT CONTINUE. Call a qualified appliance repair technician to complete the repair.

Step 2. Turn off the water supply to the dishwasher. This is usually underneath the kitchen sink or in the basement or crawlspace near the location of the dishwasher. Pliers may be helpful here.

Note: If there are no shut-off valves, you must shut the water off at the main water supply valve for your home.

Step 3. Remove the lower panel(s) of the dishwasher. These are usually held by 2 to 4 screws at the upper and lower corners of the panel(s).

The inlet valve is usually near the front of the dishwasher. Attached to the valve you’ll see: 2 or 4 wires, the water supply line from the house and the water feed line that goes to the dishwasher.

Step 4. Remove the household water supply line from the valve. The line is usually secured with a brass compression nut. The water supply line is usually copper or braided stainless steel.

CAUTION: Water supply line may be hot.

Step 5. Remove the fitting from the valve the water supply line was attached to. This fitting may be very difficult to remove. It may help to put the valve into a vice in order to remove the fitting. If you cannot remove it, replace it. The fitting is not an appliance part but a plumbing part that is available at most hardware stores.

Step 6. Remove the screws holding the valve to the dishwasher frame.

Step 7. Label the wires to the valve so you’ll be sure to reattach them correctly.

Step 8. Remove the wires from the valve.

Step 9. Remove the clamp on the black rubber water discharge tube and pull the tube off of the valve.

Step 10. Reinstall the old fitting (or a replacement fitting if necessary) onto the new valve the water supply line was attached to. Use Teflon tape or pipe joint compound as a thread sealant. Make this fitting tight to prevent leaks. Make sure that the fitting points in the same direction as the old one so that the water supply line will meet up with it properly.

Step 11. Install the new valve in the reverse order of the removal instructions.

Note: The water supply line is under high pressure. Be sure to tighten the fittings properly.

Step 12. Turn on the water to the machine, and check for and correct any leaks.

Step 13. Reinstall the access panel(s). Restore the power to the dishwasher and test.

Note: You may have to let the dishwasher run a few minutes before it reaches the next water fill cycle.
Internal filters Every dishwasher has some type of filter to keep large food particles and foreign objects away from the pump assembly: Most modern dishwashers have self-cleaning filters that don't need any routine cleaning. Some have filters in the bottom of the dishwasher that you need to periodically clean. You don't need any tools to remove the filter, and cleaning it is easy. Consult your owner's manual to determine which type you have and its maintenance requirements.

Posted on May 17, 2010

  • 1 more comment 
  • Michael Thomas
    Michael Thomas May 18, 2010

    Hello there
    thanks for the info i will send you some more info on this and some picts that may help solve your problem and give you a understaning on how the check valve section works


  • Michael Thomas
    Michael Thomas May 18, 2010

    Also be advised that if the water pump is not providing adequate water pressure to distribute to the upper section that the check valve wil not operate properly

  • Michael Thomas
    Michael Thomas May 18, 2010

    Hello there again
    just wanted to add a few things here
    when you say that the machine does not get enough water and stops before the float raises up to the proper lever would tell me that i would have to check out the cycle timer because the timer alows xxx amount of time to fill before the fill or lever sensor will turn off the fill water and start the cycle so this needs to be checked
    Next
    the circulation pump needs to be thourghly checked meaning all gaskets and any hoses attached to it if any of these are worn out or cracked or broke the pump will not circulate the water or build up proper pressure



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  • Contributor
  • 25 Answers

Does it feel free to turn? It's water powered and works in conjunction with the water pump. Do you hear the water/booster pump come on?

Posted on Oct 04, 2009

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SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

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My Frigidaire dishwasher fills very slowly, by the time the timer starts the wash cycle there is not enough water to operate the spray arm, same thing with rince cycle. I suspect the inlet valve, so I...


Hi Charles.

In fact this model is not too complicate. The only switches in line with power to inlet valve are the door switch and pressure switch. The timer is not a common reason for the problem. When machine is under-filling (this and similar models), the problem is usually either inlet valve or float switch.

If there is no water at all the valve solenoid may be open. Read impedance at valve's contacts. If it reads infinity replace the valve straight away. Valve solenoid testing is not a definitive test. The valve may still be clogged or mechanically faulty.
Before testing anything else make sure that there is no blockage in inlet hose and valve and check pressure from the house.

As said the problem is often the valve, before replacing the inlet valve the following must be tested:

Testing would start at the float switch. The fact that the arm is moving smoothly and clicking does not mean that is working OK. The switch may be opening too early the contact to inlet valve, causing water flow to end beforetime.

The technician must test the float switch by jumping its contacts. With float switch contacts jumped the machine will overfill. The cycle must be stopped manually according to the times in the tech sheet (from 2 to 13 mins depending on the cycle selected). If machine fills completely with floater's contacts jumped replace the float switch.

If the machine under-fills and continues the cycle the door switch is ulikely responsible. The technician is supposed to test the door switch as well, just in case. The door switch can be tested jumping its contacts or reading impedance to make sure that it opens and closes circuit when door is operated.

If the float switch is OK it is usually the valve. The timer can be tested reading voltages at contacts 6B, 10T and 8T of wiring harness lines (see tech sheet).
Because of safety issues involved, testing with live power should only be performed by a qualified technician.

I have uploaded the tech sheet and part manual in the page below (mediafire server). Please click on the link and follow instructions on Mediafire web site to download: Download and unzip the compressed folder to access the PDF files.

http://www.mediafire.com/?62ko816rucx9sxh

Regards.

Ginko

Sep 14, 2011 | Dishwashers

1 Answer

Water only dribbles out of lower spray arm during cycle and spray arm doesn't turn. checked filter, water lines etc. If it's a motor or pump that needs to be replaced, how do I get to it?


Hi

When the Dishwasher won't fill you'll need to check for the water inlet hose, the water inlet valve and the float switch assembly. When the water fills your dishwasher, a float rises along with it. As the float reaches a certain threshold level, it shuts off the flow of water, thereby preventing a leak. Sometimes the float can get stuck in the wrong position in your dishwasher, and it can prevent your dishwasher from filling. Sometimes it can happen due to float valve and on other occasions due to float switch. Inspect the water hose coming to the dishwasher for any blockages. If the hose is not clogged then check the water inlet valve for any clogs, if the water will not even fill for few seconds then certainly the water inlet valve is bad and should be replaced. You can also use a multimeter to check continuity on inlet valve. If you don't get any value on the multimeter then you'll need to replace the water inlet valve assembly. However, if the valve is fine then the float switch assembly should be replaced. Hope this helps... Please post back if you need more information.

Daniel

Sep 03, 2011 | Bosch Dishwashers

1 Answer

When the dishwasher goes into wash mode there doesn,t seem to be enough water in the unit to spray out the arms. when i pour water into unit it works ok until its next cycle?


Hello, If your unit is not getting enough water inside of it one of the first things that you would check would be the water inlet valve. If you follow the water line going to the dishwasher the water line itself connects to the inlet valve. Using a multimeter you can remove the connection going to the solenoid to assure that the valve is getting power if the valve were not to be getting power then you would look at the float switch which is usually found to the right of the inlet water valve. If you do have power going to the valve yet you still do not have water flowing past the valve you will most likely need to replace the inlet water valve in the unit. If you have any further questions or you have a problem locating the inlet water valve message me back your make and model number of your unit and I will try to locate your schematic to show the location of the valve. Also if you do have any questions message me back those as well. Thanks again I await your reply Rick

Aug 31, 2011 | Siemens Dishwashers

2 Answers

I have a Frigidaire dishwasher, PLD4460. Only 4 years old. The dishes on the top rack are not coming clean anymore. Something as simple as left small bits of broccoli do not even get rinsed out of the...


Hi

If the top rack of the dishwasher doesn't get clean, check your appliance to see if you can fix the problem.
First check the spray Arms to make sure the holes in the spray arms are free and clear of debris. Your dishwasher should have several spray arms, including one at the bottom of the tub, one under the top rack, and possibly a third spray arm on the top of the tub. Sometimes food and mineral deposits can block holes in the spray arms, preventing water from spraying effectively. If this occurs, warm some white vinegar and pour it into a spray bottle. Spray the holes with the vinegar and dislodge debris with a toothpick or large safety pin.

Then check to see if your dishwasher has clogged filters. Filters generally cover the drain valve area to catch debris as the water drains from the dishwasher. Many dishwashers have maintenance-free filters, but your dishwasher may have filters that need cleaning. Read your owner's manual before you perform any filter maintenance to avoid damaging your dishwasher.

Check your water temperature to make sure it's hot enough. Water that is under 120 degrees Fahrenheit may not be hot enough to clean dishes effectively. Turn your kitchen hot water tap on and wait until the water warms up completely. Fill a cup and measure the water temperature with a kitchen thermometer. If the water is less than 120 degrees Fahrenheit, turn your water heater up to 120 degrees.

Load the top rack properly. Place cups and bowls upside down in the rack and don't nest dishes because this can prevent water from reaching dishes. Don't overload the top rack. Instead, position each item so the dirty areas of the dishes will receive full contact with water spraying up from the main spray arm located beneath the top rack. Prevent items from hanging below the top rack, which could prevent the spray arm from rotating.

Also check this link for more helpful info:-

http://www.ehow.com/info_7977311_top-dishwasher-not-getting-clean.html

Please get back to us if you have further query else please accept the suggestion.
Thank you for contacting fixya.com


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It could be that your dishwasher is not getting enough water. Let the water fill the dishwasher, set the spray arms in the same direction. Add a large pot of hot water and run the dishwasher. Open the door and check to see if the spray arms have moved. If they have moved, replace the water inlet valve.
Remove the 4 screws holding the lower kick panel. Remove kick panel. Locate the water inlet valve. This is the electrical valve where the water pipe hooks into the dishwasher. Shut off the water to the Dishwasher and electrical to the dishwasher. Disconect the 2 wire plug at the water inlet valve. Disconect the water supply to the dishwasher at the valve and disconect the rubber hose attached to the valve. Install new valve and test machine.
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Take a large pot of hot water and add it to the dishwasher and close the door. Start the dishwasher and observe to see if the spray arm moves.
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