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Re: fine particles of food/grit left at end of cycle
Open the door and check it with a level. If the dishwasher isn't perfectly level, turn its feet (behind cover at floor) until it is level. If the jet bars can be removed, take them off and rinse them out. Make sure they're engaging with the pump outlet properly. There may be a plastic bushing that the main wash arms rotate on. If this is worn, replace it. It will make a world of difference. Finally, make sure you're using enough detergent. I suggest the cheap powdered type. It seems to have the best cleaning ability. Finally, make sure the rinse aid dispenser is set to dispense enough.
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Make your dishwasher more effective with these quick tips:
1. Check the sprayer arm. When I opened the dishwasher door during a wash cycle, I learned that some of my utensils are too tall, and they blocked the sprayer arm from rotating. Problem solved! Also look at the holes on the sprayer arm to make sure they are not clogged. Use a toothpick if you need to dislodge anything.
2. Check the drain. Look inside the bottom of the dishwasher and remove any food or objects from the filter. Run the garbage disposal to clear it out before turning on the dishwasher since they share the same drain.
3. Don't overuse detergent. It's a mistake to assume you should always fill up the detergent cup. Check the manual and your detergent. On mine, filling it to the first line (about a third) is enough. Too much detergent can leave residue and etch your glasses.
4. Check your water temperature. If it takes a long time for the hot water to reach your kitchen sink, that means the dishwasher isn't getting enough hot water at the beginning either, and that makes it harder to wash away the food particles and grease. If you need to, turn on the dishwasher after you've used hot water at the kitchen sink.
5. Clean the inside of your dishwasher. Grease, detergent residue, and calcium deposits build up inside your dishwasher. You can use vinegar to wash them away. On a regular basis (every few months or so), run a wash cycle while your dishwasher is empty. Don't use detergent, but turn on the dishwasher and let it run for a few minutes until water starts to fill up the bottom. Then add one or two cups of white vinegar to the water and let it finish the cycle.
Sometimes using a dishwasher is an experiment in finding the right combination for hard or soft water, the detergent, and a rinse aid.
Best of luck
Is your state one the banned phosphates? If so, try adding a tablespoon of TSP to the detergent. If not, is there galvanized steel in your water supply? The grit in most washing aids removal of food on the dishes but is supposed to be gone by the rinse.
The packets usually have detergent and rinse aid together, built in. If you also have liquid rinse aid in the automatic dispenser, you are getting a double dose, and that is causing the film. Use standard dishwasher detergent until the automatic rinse aid dispenser is empty, or at least turn the pointer indicator (located by the rinse agent filler) to the lowest setting possible to help somewhat.
The U1 code means:-
Dishwasher attempted to fill to correct level but failed. = Water tap not turned on. Turn the water tap on. Too much foam. Rinse aid setting too high or has been spilled. = Turn the rinse aid dial to a lower setting or wipe the spill. Incorrect detergent. Ensure that you use a detergent that is intended for a domestic automatic dishwasher. Egg yolk. Place an extra tablespoon of detergent in the dishwasher door for pre-rinsing. Too much detergent. Use the recommended quantity of detergent
Wash pump faulty. Call your Fisher & Paykel Dealer or Authorised Service Centre. Dishwasher not draining. = Drain hose bent or kinked. Straighten drain hose so water can flow through. Strainer blocked. Empty out the strainer and ensure the filter plate is clear of food particles..
dishwashers have a rinse aid
dispenser. If your dishwasher has this dispenser, fill it up
periodically and it will release the appropriate amount of rinse aid
automatically at the right time during the wash cycle. This will help
your dishes rinse more cleanly.
Rinse aid in solid form
Some older dishwashers or basic models do not have an
automatic rinse aid dispenser. In this case, you can buy rinse aid in
solid form that attaches to your dishwasher rack. Solid rinse aid can be
hard to find in stores because it is not commonly used, but it can be
Vinegar or lemon juice
Appliance repairmen will tell you that one of the common
problems they see with dishwashers is the buildup of excess detergent.
If there is too much detergent in your dishwasher, your dishes will not
rinse cleanly, no matter how good the dishwasher is or how much rinse
aid you use. To clean the excess detergent that has built up inside your
dishwasher, put 3 tablespoons of vinegar or lemon juice (concentrate is
fine) in the empty dishwasher and run the dishwasher through a complete
cycle with no dishes. Do this twice, for two complete cycles of the
empty dishwasher with only vinegar or lemon juice added. The acid in the
vinegar or lemon juice will break up the detergent that has built up in
your dishwasher's interior.
After you have cleaned the detergent
buildup from the inside of your dishwasher, follow the steps below to
keep the buildup from happening again and to help your dishes rinse
cleanly and prevent residue from accumulating on the dishes.
Gel dishwasher detergent
Switch to a liquid or gel dishwasher detergent. Any brand will do.
Fill one compartment half full
Dishwashers will effectively clean dishes with much less
detergent than manufacturers often recommend. The bleach in the
detergent, combined with the extremely hot water used in the dishwasher
wash cycle, will clean and sanitize your dishes completely, even in
small amounts, and using less detergent helps prevent buildup and
residue from accumulating on your clean dishes.
Fill only one
detergent compartment(the one that snaps closed) half full with gel
detergent. Snap the opening closed and run your dishwasher as you
normally would. Your dishes will come out sparkling clean with no
buildup or residue, plus you'll save money by using less detergent!
Load the appliance with dirty dishes, placing soiled pots and pans on the lower rack where they will be subjected to the most vigorous cleaning. Glassware and dishwasher-safe plastics should go on the top rack. It is not necessary to rinse dishes before loading them in the Hotpoint appliance, unless the dishes have been sitting for awhile and the food particles have dried.
Fill the detergent compartment with your preferred brand of dishwashing detergent, and add glass rinse solution to the rinse reservoir on the inside of the door if your model is equipped with one, then close the door to lock in place.
Select the cycle you wish to use and press the button. For pots and pans, use the heavy-duty cycle. Normal wash is fine for dishes and utensils.
Save on your energy bill by running the dishwasher only when it is full and by allowing the dishes to air dry instead of using the heat dry function on the appliance.
OK.... The rinse aid dispenser holds enough rinse aid for a lot of washes and dispenses very little each time. So you may nedd to have the dispenser emptied by a technician. If you take the door liner off you can see the back of the dispenser and maybe you can work out how to empty it. Holding the actuator in manually could allow the rinse aid dispenser to run out. Then wipe the tank dry with a towel. Putting high fat milk in the machine while it is rinsing will neutralise the foam. Just one cup will do. Good Luck.....T.
I did the same thing with my Maytag dishwasher, several times actually, before realizing I was putting blue dish soap in the rinse aid compartment which then wouldn't empty. Then my Maytag started making ominous noises during the rinse cycle (appliance guy said it was "cavitation" noise).
Appliance guy wanted to replace the whole detergent/rinse aid compartment but since he told me the noise was probably caused by the dish soap stuck in the rinse aid compartment, I decided to try to get rid of it first. Here is the method that worked for me; it took most of a day but saved me parts & labor:
1. Get some white vinegar--I used nearly a quart. 2. Fill the rinse aid compartment to brim with the vinegar (overfill) but don't put cap on 3. Raise the dishwasher door slowly until the vinegar drains into the lower part of the chamber (at least this is how my Maytag worked) 4. Agitate the contents as best you can by rapidly shaking the dishwasher door up & down. 5. I also used a small plastic medicine dropper jammed into small openings on each side of the rinse aid compartment to agitate the vinegar by squeezing air into them. 6. Drain the compartment by closing the dishwasher door (move it to full vertical)--vinegar will drain into the bottom of the dishwasher. 7. Repeat above steps a couple times, then fill again w/vinegar, put the cap on and let it stand for awhile. Then drain and repeat the whole routine several times. 8. Blue-colored vinegar will come out which is a good sign (or whatever color your dish soap was). 9. After awhile, I started pouring generous amts of very hot tap water thru the rinse aid compartment, alternating with white vinegar. (No reason you can't use hot vinegar also.) 10. Eventually, all the blue stuff came out & the see-thru levels of the rinse aid compartment were completely clear/empty. 11. Run the dishwasher (I decided to not put any rinse aid in). I got some overfoaming (from the washed out soap) the first time I ran it which I probably could have remedied by adding more vinegar & possibly salt, but the noises were gone! I just ran the cleaned out dishwasher a 2nd time & it was back to its quiet self with no overfoaming.
Takes some patience but hey, beats a big repair bill!!
Very common problem is soap build up in these machines. Try putting it into a wash cycle with no dishes, and no soap. Let it wash for about 5 minutes, and then open the door. If you see alot of soap suds, then soap build up is the problem. Try doing a couple loads with no soap, and no dishes, and throw a cup of vinegar into the machine halfway through the wash. Repeat as necessary. This should solve your problem.