We bought this house in 1984.
Around ten (eleven?) years later, we paid to have everything removed from kitchen / den
great room and all new appliances installed (gas stove top, upper microwave, electric convection oven,
The trouble is, over a period of a long time the drain from the automatic dishwasher to the (higher) disposal
backs down into the pan / tub at the base of the automatic dishwasher.
This is a quiet "European" model - Bosch as I recall.
Any plumbers in "MyRetirement" with advice.
Somehow I doubt that the contractor followed "Code" properly, otherwise
how could this "backflow" be happening (again and again)?
Backflow preventor for automatic dishwashersUS 3929149 A
Back flow valve on the discharge of the dishwasher water pump may be bad, but this is a new dishwasher. Prior to calling the dishwasher repair man make sure the discharge water line to the disposal rises above the disposal prior to entering the disposal. Line should be long enough to do that. Sometimes "plumbers" forget to install that loop when installing the dishwasher or even changing out the disposal. The loop forms a trap so waste doesn't go back into the washer. Water at the bottom of the dishwasher, (there always is some) should be relatively clean. If it has food particles in it, that's probably your problem.
I'm not a plumber but had the same problem recently. Put 2+2 together and problem started when I had a new disposal installed. Curious how you are getting the water out of the pan.
Thank you thank you
this alone is worth "the price of admission."
This "new" work was done around 1994 1995.
The (discharge) water "line" is (not a "solid" pipe) sort of like an accordion
although much smaller in diameter, sort of like the clothes dryer lint 4" or so line that leads through
our garage wall out into the outdoors.
I checked. That "line" is plenty long.
The "plumber" could have put in some kind of hanger to hold it up to make the high loop.
My understanding is that this - makes an "air block" a section of air which prevents
syphoninng. All I did was cut to length about 26 inches a piece of 1" x 2" (3/4 x 1 1/2) to prop up
the line and give it a generously high loop.
I think the disposal is what pushes the drain / dirty water down that line.
As far as getting the water out, just running the dishwasher through normal cycle "4" setting (this is Bosch)
drains it - plus, this taught us to clean that filter in the bottom of the dishwasher pan.
You Tube came to our rescue (this is how you ....). Thank you, thank you - from the bottom of my automatic dishwasher.
that Length I cut was a piece of wood, in case that is not clear from my writing.
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