I don’t actually know how old the disposal is, since we just moved into our new home.
I’m pretty sure that it’s the disposal that’s causing the problem. I’ve tried everything else (including two different dishwashers).
We moved in two weeks ago. The first time I ran Dishwasher #1 (Jenn-Air, DW760W), I found standing water in the bottom of the tub when the cycle was complete. I ran through all the normal checks (solenoid/pump working, no kinks/clogs in the drain line, no clogs in the internal workings). I ran the DW on the rinse and hold cycle and on the rinse cycle with the drain hose unhooked from the dishwasher and it drained perfectly.
When I plugged everything back in, I ended up with standing water in the tub again. I thought maybe there was something wrong with the Wash cycle; the only cycle I hadn’t tested. I decided that getting a new dishwasher was the solution.
My cousin recently remodeled his kitchen and had a spare dishwasher sitting around. I took it over to our new place and plugged it in. Enter Dishwasher #2 (GE, GSD5500G00CC). Excited that I could now wash all of our dishes after the move, I ran a cycle. I opened it up to find standing water in the basin.
As I was typing up a post to this forum under "dishwasher repair" it occurred to me that I should see if it Dishwasher #2 drained when not plugged into the disposal, which was the only piece I couldn’t check because the drain-hose hookup is blocked from visibility by the sink basin. I took a picture with my phone and it didn’t look like there was anything blocking the drain input in the disposal, but I couldn’t be sure.
In any case, I pulled the drain hose, set it up to drain straight into the sink, and ran a full cycle in Dishwasher #2. Viola, a fully-drained dishwasher.
So now I’m trying to figure out why/how the disposal is blocking the draining of the dishwasher (either of them). I took a second picture of the drain hose hookup and it doesn’t look like there’s a plug in it (which I know can be a problem). The disposal runs when I flip its switch, and seems to grind up what little food we’ve put down it (I try not to use my disposal very often).
I’ve attached a picture of the drain-hose hookup. I’m not sure if the silver circle in the middle is normal, or what.
Help?