0

I believe that my dishwasher's drainage hose is partially blocked. Are the following symptoms all consistent with / explained by that, or is there something else I should be worried about?

  • Not fully draining
    • After a wash there is normally an inch or two of pretty clean water left lying at the bottom of the dishwasher.
    • Doesn't seem like dirty washing water - seems more like rinsing water. Hence my suspicion that the blockage is only partial.
  • Drastically increased salt usage
    • Previously a salt-refill would "last" 3-5 months. It's now asked for 4 refills in a month.
    • I'm guessing this is caused by the water not draining, which means the salt reservoir sits underwater the whole time?
  • Rust spots on cutlery
    • Dishwasher has a top cutlery drawer and knifes have recently started coming out with notable rust spots, where they didn't previously do so.
  • Glasses with greasy streaks
  • Less effective cleaning in general

I've followed the manual's instructions about cleaning the filter, and checking that the impeller wheel is unobstructed, to no effect. (Manual, page 27/28) So I think it's in the pipe itself, not in the dishwasher?

Have I judged this correctly?


See here for my question about what I should do if I am right.

bumped to the homepage by Community 14 hours ago

This question has answers that may be good or bad; the system has marked it active so that they can be reviewed.

0

Where does your dishwasher drain hose go? It should go to either an air gap or a high hose loop. An air gap is a metal/plastic gadget, normally on top of the sink, that has the dishwasher output come in one hose and another hose that goes down to sink drain/disposal. A high hose loop has one hose that goes from the dishwasher, loops up to just under the counter (and at a minimum, above the bottom of the sink) and then goes down to the sink drain/disposal.

If you have a high hose loop but it fell down then that would explain at least some of these symptoms. If you're not sure, post a picture of the hose/drain/etc.

The manual you linked is for use, not installation. I found a Bosch installation manual and while it does not include a diagram of a high hose loop connection, it does reference that in the text, so that is definitely a possibility - and therefore a "high hose loop that isn't high or a loop any more" is also a possibility.

  • Thanks for the input. I don't recognise the description of the air gap, so I'll take a look for the high hose loop, tonight. – Brondahl Jun 25 '18 at 8:46

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.