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Kenmore Dishwasher, intermittent weak wash and rinse

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Kenmore Dishwasher, intermittent weak wash and rinse Paul Stivers 04-13-2008
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Posted by Paul Stivers on April 13, 2008, 10:52 pm
I have a Kenmore Ultrawash III dishwasher.
Approx. 15 yrs old.
SN: FD3334919
Model No. 1564990 (I think it's 99. Those numbers are a little worn
on the plate.)
Part No. FD3334919 (From the Sears installation manual. May not be
useful info.)

Sometimes the dishes don't get very clean and there is clearly food
residue left on the dishes. Some "stubborn" food as though the wash
cycle wasn't very effective, and some loose food residue as though
the rinse cycle wasn't very effective. Other times the dishes appear
clean except for a white residue left on the dishes, as though just
the rinse cycle wasn't very effective. Sometimes the dishes come
put fine, but the described problems seem to be getting worse over
time.

I've noticed that sometimes, starting at the beginning of the quick
rinse cycle, I can hear the unit humming but don't hear any water
swishing around. When I open the door and look in immediately, the
water isn't moving. When I close the door again the water starts
swishing. Perhaps the same thing is happening during wash cycle and
I just haven't noticed it.

Any idea what's going on, and what the fix might be?
Pump getting vapor locked?
Solenoid not switching properly?

Advice on fix versus replace? Again, the unit is about 15 yrs old.
We will be selling the house in another couple years.

Thanks for any advice,

Paul

Posted by AZ Nomad on April 14, 2008, 3:55 am
On Sun, 13 Apr 2008 21:52:08 -0500, Paul Stivers
>I have a Kenmore Ultrawash III dishwasher.
>Approx. 15 yrs old.
>SN: FD3334919
>Model No. 1564990 (I think it's 99. Those numbers are a little worn
>on the plate.)
>Part No. FD3334919 (From the Sears installation manual. May not be
>useful info.)

>Sometimes the dishes don't get very clean and there is clearly food
>residue left on the dishes. Some "stubborn" food as though the wash
>cycle wasn't very effective, and some loose food residue as though
>the rinse cycle wasn't very effective. Other times the dishes appear
>clean except for a white residue left on the dishes, as though just
>the rinse cycle wasn't very effective. Sometimes the dishes come
>put fine, but the described problems seem to be getting worse over
>time.

Before starting a wash, do you make sure that no dishes are blocking the
rotating sprayer arm?

Posted by Paul Stivers on April 16, 2008, 12:10 am
AZ Nomad wrote:

> Before starting a wash, do you make sure that no dishes are
> blocking the rotating sprayer arm?

Thanks. We do try to check for that but sometimes could do better
about not cramming stuff in.

The thing is that sometimes the water doesn't circulate at all during
at least the first rinse cycle (just that humming noise I mentioned,)
so I don't think blocking the rotating sprayer is the main problem.

Paul

Posted by Edwin Pawlowski on April 14, 2008, 10:48 pm

>I have a Kenmore Ultrawash III dishwasher.
> Approx. 15 yrs old.

> Any idea what's going on, and what the fix might be?
> Pump getting vapor locked?
> Solenoid not switching properly?
>
> Advice on fix versus replace? Again, the unit is about 15 yrs old.
> We will be selling the house in another couple years.

The problem is 15 years old. Pumps tend to wear and not give the same
pressure, spray arms clog. Rather than be miserable for the next couple of
years, get a new one for $500 and keep yourself happy and the new buyers
happy.



Posted by Paul Stivers on April 16, 2008, 12:14 am
Edwin Pawlowski wrote:

> The problem is 15 years old. Pumps tend to wear and not give the
> same pressure, spray arms clog. Rather than be miserable for the
> next couple of years, get a new one for $500 and keep yourself
> happy and the new buyers happy.

Yes, that would be the altruistic thing to do. But what if it's just a
solenoid valve ;).


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