Bosch diswasher runs but doesn't drain

Dishwasher Repair
1

The dishwasher runs but doesn’t drain. I have to siphon the water out of the tub after it finishes it complete wash cycle. The water in the tub is then still dirty, so I have to complete the job with two siphon and rinse cycles.

One more step I have to take every so often is to remove the water from the pan under the tub otherwise the washer won’t allow any water in.

Any suggestions? Is it a sensor problem, or is there a separate drain pump and that’s faulty?

One more problem is that Bosch won’t release their circuit diagrams to me, so I’m working in the dark.

2

The model number you provided is incorrect.

Verify and repost the model number, please.

Gene.

3

[QUOTE=Gene;11056]The model number you provided is incorrect.

Verify and repost the model number, please.

Gene.[/QUOTE]
Thanks, Gene, for your response. You’re right. The model number I quoted is wrong. The right one is SHX46L05UC.

4

Possible a foreign objects inside the drain hose or the drain pump.

Also possible water leak under the dishwasher.

Remove the toe kicks and inspect for the water leaks and/or water marks.

Disconnect the drain hose from the air gap, put it in a bucket and run the drain cycle.

Post your findings.

Gene.

5

Hi Gene,

Thanks for your suggestions.

There are no water leaks on the floor. The pan under the tub collects water, however, so after about three rinse and siphon-drain cycles I have to remove some of it otherwise the tub won’t fill.

There is no air gap. The drain hose runs right into the waste disposal unit. I disconnected the hose at that point and directed it into a bucket. No water came out when the washer ran.

I also blew into the end of the drain hose and could hear bubbles in the water in the tub, so I guess there’s no blockage.

That covers your questions. What next?

Sincerely,

Michael Burrows