Question about Bosch 24 in. SHU5305UC Built-in Dishwasher
I have a Bosch SHU5315UC dishwasher. It's about 5 years old. Over the last year or so, it has not been cleaning as well. There is residue left in the machine on most runs. I have cleaned the filters and this does not seem to fix the problem. Sometimes it will not complete the cleaning cycle, but most of the time it does. It has been suggested to me that the problem is that the water heater is not working properly, and that the machine is not getting to proper water temperature. Is this a likely cause of teh problem, and if it is where can I get an exploded view or service manual that will describe the procedure for servicing the unit.
Poor cleaning is generally caused by not having enough water in the tub, which is usually the fault of the water inlet valve. You mentioned cleaning the filters... which filters? Did you remove the valve and clean its screen/filter? If that screen gets clogged with debris (and they do) it'll choke off the water supply to the tub.
Posted on Nov 04, 2007
I had an easy fix to this same problem of not cleaning dishes well. The spray arms would get clogged with food particles blogging the little holes so insufficient water was coming out. Taking the arms off, poking the food out of the holes and rinsing the arms out well solved my problem. The bottom arm simply pulled off and the upper arm has a plastic doo dad that takes a quarter turn to release.
Posted on Jun 29, 2011
I had the same problem last week with my dishes coming out dirty. I read through the suggestions here and remembered that my Bosch front-loading washing machine had the same problems. Clothes came out smelling really bad after being washed. I had to buy a washer cleaner called Affresh and after one puck cycle it was a brand new washer. So I thought maybe the washer had the similar residue buildup in the hoses and parts. I used half of an Affresh Power Puck and ran an empty cycle on the maximum power. I was so scared and had tons of towels ready to mop the floor. But to my surprise, the dishwasher was brand new looking after! The bad odor from the washer that I previously attributed to the dirty dishes was gone! The dishes since then have been so clean!!! Wow!
Posted on Apr 03, 2010
I have fixed this problem using a solution found elsewhere (I can't remember where). I opened up the Dishwasher door and inspected the area of the control board associated with the three large relays that switch the heater and other high current parts of the machine. For the heater relay, one of the solder joints had degraded due to electromigration to the point that it was now a high resistance point. (looked like a cold solder joint, and had obvious voids where solder had migrated away) I reheated the joint, applied some fresh solder and wham! working dishwasher. The water was not getting hot due to not enough current running through the heater, and this produced all of the symptoms of long cleaning times, dirty dishes etc. This is actually the second major appliance I have fixed in this way in a few years. The first was a microwave where the transformer delivering current to the klystron also had a joint that failed from electromigration. A similar re-heat and solder fixed the problem. It seems that the manufacturers are not designing these solder joints with sufficient volume to prevent elctromigration over years of heavy current loading. Perhaps this is intentionally designed in failure, but it is interesting to see this show up twice in my very limited stable of appliances.
Posted on Dec 10, 2007
One more thing, use salt and rinse agent, 3 in 1 tablets are not really good for older machines. The dishwasher is designed to release the salt and rinse at different times within the wash, if you put it all in one tablet it all goes in at once. Save your money, in fact I saw a tablet the other day that was 5 in 1, i think it makes you a cup of tea also...
Posted on Dec 10, 2007
Yep me too, the water seems dirty and leaves a residue, that then dries onto the glasses and plates. Best thing you can do is try and raise the water out pipe up at the back, I used a hook behind the machine. The dirty water then gets pumped up and over the raise and down and out otherwise on older machines the water just sits in the pip and goes back in. Also buy some Caustic soada and run some through, this will clean the fatty deposits and hopefully help.
I used to party now I clean the dishwasher...
Posted on Dec 10, 2007
There is a new product out called the dishwasher filtration system. it actually filters the water going into your dishes. the dishes look dirty because your water has a lot of calcium and magnesium in it making them appear cloudy or dirty. the dishwasher filter reduces those minerals and my dishes look perfect now. no more dirty and grimy looking dishes. i also dont waste time washing them by hand before and after the dishwasher. hahaha you can get it at www.dishwasherfilter.com. use code DFMTEN and you will get 10% off. it fits right under your sink and is very affordable. you will be glad you bought this product. thanks
Posted on Apr 27, 2008
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