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sachsab

GE Profile Diswasher (PDW 7300) does not completely drain

23 posts in this topic

Alright, after thoroughly searching the forums for many of my issues over the past few years, I have stopped lurking, registered and coming out of the closet - only after the complete failure of my troubleshooting skills!.

I have a GE profile PDW7300 dishwasher that does not completely drain and leaves the dishes with spots.    

Disposal connection, hoses, flap valve are all good.  No obstructions in the drain at the bottom of the tub and when I connect AC directly to the sump motor - it drains completely (at a rate of about 1 cup per 5-8 seconds - seems normal).  During the cycle, the bottom fills to just under the heating element (as expected) and the washer pumps well into all three spinners (top, middle & bottom) - I can tell because they all spray me when I open it up quickly!  When the unit does drain, it drains well - just not long enough to empty the bottom of the tub.

Heeeelp!   I am a proud (read stubborn) do-it-yourselfer who refuses to be bested by a dishwasher.   Please help me keep my self esteem and beat this dishwasher.

--Andrew

P.S.  I did the Rinse then Reset test and it completely drained after the 2nd 'Rinse & Reset' cycle - the first one still left significant water in the bottom.

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[user=3641]RegUS_PatOff[/user] wrote:

How long does the Drain Pump operate ?

It should run, for maybe 75 seconds

When I did the 'Rinse/Reset' it ran for EXACTLY 75 seconds - no 'maybe' about it.

With little water left, it obviously pumped much less than one cup every 8 seconds.   I should correct my statement above, when there is plenty of water, it pumps 1 cup every 8 - 10 seconds.

--Andrew

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So, ... when the d/w is full, and you stop it in the middle of a cycle, and Rinse/Reset ...

does it drian for 75 seconds, and does that empty it completely ?

corrected:    prior parts pictured were for Main Motor

may need this Drain pump assembly

click on picture

00214751.jpg

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[user=3641]RegUS_PatOff[/user] wrote:

So, ... when the d/w is full, and you stop it in the middle of a cycle, and Rinse/Reset ...

does it drian for 75 seconds, and does that empty it completely ?

may need this Motor shaft seal and impeller kit

click on picture

00166490.jpg

It ran for 75s but did not completely drain (about 1/4" left in bottom).

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I know you checked the Disposal connection. Did this include (if you have one) the air gap on the top of the sink?  Perhaps some gunk stuck at the cap.

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[user=950]GLC[/user] wrote:

I know you checked the Disposal connection. Did this include (if you have one) the air gap on the top of the sink?  Perhaps some gunk stuck at the cap.

Clean as a whistle.   I took the cover off and let it drain into the sink to see how much water was coming out per second.

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Have we ruled out suds lock?

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[user=15157]telefunkenu47[/user] wrote:

Have we ruled out suds lock?
If you mean the pump problems caused by excess suds in the water - I would say yes. 

I have this problem (water does not fully drain) even when there is no detergent and when the discharge is clear (no suds).

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Try running it empty-- no dishes, no detergent. Any change in residual water level?

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[user=3641]RegUS_PatOff[/user] wrote:

So, ... when the d/w is full, and you stop it in the middle of a cycle, and Rinse/Reset ...

does it drian for 75 seconds, and does that empty it completely ?

may need this Motor shaft seal and impeller kit

click on picture

00166490.jpg

As said above - it does not drain completely.  I need 2-3 cycles of rinse/reset to get the water out.

On the motor shaft seal and impeller kit - since mine has a separate sump, would I just replace that assembly?

Thanks!

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[user=1]Samurai Appliance Repair Man[/user] wrote:

Try running it empty-- no dishes, no detergent. Any change in residual water level?

No, running a full cycle leads to about 1/2" of water in the bottom - w or w/o dishes or detergent.  2-3 "rinse/reset" cycles will get rid of it.

It turns out that I am only pumping a cup every 10 seconds when it goes to the sink - 5-8 seconds when going to a bucket on the floor (hmmmm.... not such a good test afterall!)

Could this just be a sump that is not 'sumping' so well and not able to drain the tub in time?  If the total usage is 4-6 gallons (maybe 1.5 gallons per cycle) and I am pumping a cup out every 8-10 seconds, I will only get out 6 cups in 60 seconds or 9 cups in 90 seconds.  Seems too slow to drain the tub during a normal cycle.

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[user=44884]sachsab[/user] wrote:

...As said above - it does not drain completely.  I need 2-3 cycles of rinse/reset to get the water out.

On the motor shaft seal and impeller kit - since mine has a separate sump, would I just replace that assembly?

Thanks!

 

corrected:  prior parts pictured were for Main Motor

may need this Drain pump assembly

click on picture

00214751.jpg

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[user=3641]RegUS_PatOff[/user] wrote:

[user=44884]sachsab[/user] wrote:
...As said above - it does not drain completely.  I need 2-3 cycles of rinse/reset to get the water out.

On the motor shaft seal and impeller kit - since mine has a separate sump, would I just replace that assembly?

Thanks!

 

corrected:  prior parts pictured were for Main Motor

may need this Drain pump assembly

click on picture

00214751.jpg

Sold!  (and ordered..)

If this works, I'll share some of my son's homemade rootbeer with you (and have something to wash the bottles with!)  No kidding, he is a bit of a rootbeer aficianado and this stuff is amazing.

http://www.amazon.com/Mr-Root-Beer-Home-Kit/dp/B0006V8LG8/ref=pd_bxgy_b_img_b

Cheers!

post-44884-12904510656_thumb.jpg

post-44884-129045106881_thumb.jpg

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Piston valve at back of d/w , under the cover  -  is it clean and looks proper.?

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[user=32234]grey shrek[/user] wrote:

Piston valve at back of d/w , under the cover  -  is it clean and looks proper.?

Does a PDW7300 have a piston valve?  As said above, I did check the flapper valve and that looked good.

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Oops   -  I was just going with the "profile" . I'll just sit here and be quiet now..

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Ah yes. The dreaded chamber of horrors.

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[user=44884]sachsab[/user] wrote:

[user=3641]RegUS_PatOff[/user] wrote:
[user=44884]sachsab[/user] wrote:
...As said above - it does not drain completely.  I need 2-3 cycles of rinse/reset to get the water out.

On the motor shaft seal and impeller kit - since mine has a separate sump, would I just replace that assembly?

Thanks!

 

corrected:  prior parts pictured were for Main Motor

may need this Drain pump assembly

click on picture

00214751.jpg

Sold!  (and ordered..)

If this works, I'll share some of my son's homemade rootbeer with you (and have something to wash the bottles with!)  No kidding, he is a bit of a rootbeer aficianado and this stuff is amazing.

http://www.amazon.com/Mr-Root-Beer-Home-Kit/dp/B0006V8LG8/ref=pd_bxgy_b_img_b

Cheers!

SUCCESS!!!! Clean dishes with a dry bottom (... sounds like my kids...)

Just installed the pump and water comes out many time faster than before.

I guess the lesson here is to measure how fast the pump empties into the sink (not into a bucket) and make sure it is plenty fast enough to empty the dishwasher. 

 

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sachsab wrote:

...

SUCCESS!!!! Clean dishes with a dry bottom (... sounds like my kids...)

Just installed the pump and water comes out many time faster than before..

attachment.php?id=2776

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:party:

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i would also suggest you check into a vacuum breaker as from what i have read , what caused the problem was not asked

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[user=1635]jahjahbinks[/user] wrote:

i would also suggest you check into a vacuum breaker as from what i have read , what caused the problem was not asked

The pump blades had been mashed so it worked, just not so effectively.  My guess is a nail or something had migrated in there. 

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