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Scottthewolf

GE Dishwasher won't drain at the end of the cycle.

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GE Dishwasher Model # PDWT580R30SS.  The customer's complaint was that the unit was leaking water out of the door.  I ran a few cycles and noticed that the machine would change the cycle selection on the touchpad by itself.  For instance, I selected a rinse and hold cycle and it would change itself to a normal wash cycle on it's own.   To cover all the problems I replaced the main control board, the touchpad and the water inlet valve.  After running a test cycle after I replaced all 3 of those parts, I noticed the machine failed to drain the water after the cycle was completed.  Which is weird, because this unit has a separate drain pump and the drain pump was working normally and draining the water out just fine during the cycle.  This machine uses a separate drain pump, it does not have a drain solenoid or a piston and nut assembly like on the lower line models.   This unit also drains directly into a drain, not into a garbage disposer.  It does have a high loop in the drain hose, but this drain does have an air gap.   I'm thinking the problem here might be the air gap. Any ideas?

 

I also notice the wash (circulation) pump has a wax motor attached to it.

 

http://www.repairclinic.com/PartDetail/Actuator-wax-asm/WD21X10235/1168301

 

Does anybody know what function this wax motor does here?

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Need appliance parts? Call 877-803-7957 now!

Really?  101 views and nobody can help me??

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My question is,why would you change all these parts for a leaky door?

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 It does have a high loop in the drain hose, but this drain does have an air gap.   I'm thinking the problem here might be the air gap. Any ideas?

 

 

Did you mean to say that it does NOT have an air gap?  If so, I would expect that to cause siphoning, not a no-drain condition.  

 

Do you have the minimanual for this unit?  Use it to go into service mode and run the drain pump.  

 

Other things to check:

 

- check the cover inlet in the basin for gookus

- remove the cover inlet and check the sump and drain outlet for gookus.

- make sure the drain pump check valve and the drain line check valve pass water in one direction only, from the pump to the drain hose; one of these could be gooked up, too.  

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It DOES have an air gap.

 

To answer jumptrout's question.  I replaced all those parts because I could not get the unit to leak at all like the customer said.  I also replaced the control board and the touchpad because the cycle selection kept changing on it's own.  I would select rinse and hold and it would start a "normal" cycle on it's own. GE also sent all 3 parts to the customer free of charge because the unit is just a couple months out of the first year warranty.

 

Nobody knows what fuction the wax motor does in the wash pump???

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In the manual Reg posted above, it explains the wax motor operation as a "single rack' setting

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thanks kdog.

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