Dishwasher Not Draining - Easy Fix

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Jul 7, 2014
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Winnipeg MB CA
Our friend L. was widowed a few months ago. Her husband was a really good guy, and we miss him a lot.

At the time he died unexpectedly (severe stroke), they were in the middle of a major kitchen/main floor renovation.

We've been trying to help her out with house stuff.

The Bosch dishwasher worked fine before the reno, but had not worked since being reinstalled. It would get a few minutes into a cycle, and then quit, with standing water inside.

Our dishwasher, also a Bosch, had the same problem a couple of years ago. Replacing the discharge pump did not solve the problem. Eventually I found the corrugated plastic discharge hose was clogged with years and years of food waste. I blew it out with my compressor, and the it's worked well since.

So, checking the discharge hose was my starting place, even though it looked really clean from outside.

I removed it at the sink drain, and found a piece of plastic inside. I assumed it was some sort of fancy one-way valve, installed by the factory. But just to be sure, I pried it out with a screwdriver.

Oho! - it was a simple plastic plug, likely stuffed in so the DW wouldn't leak while being moved into the garage.

It was likely a different tech who reinstalled the DW, and didn't know about the plug, or who (like me) was fooled by it.

Anyway, when left the DW was close to 20 minutes into the remainder of the cycle and was draining fine.

Murphy's Law was temporarily repealed; no doubt my next attempt to fix a major appliance will be a nightmare.

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