dishwasher – white deposits

[uoapsdb]

Pleas see photos at :
http://myweb.tiscali.co.uk/barfblog/gra … G_3109.JPG
http://myweb.tiscali.co.uk/barfblog/gra … G_3110.JPG
http://myweb.tiscali.co.uk/barfblog/gra … G_3111.JPG

White deposits have started appearing on the dishes and cutlery. I have tried turning the salt off and to the maximum, I have tried different dishwasher liquids.

ANy advice ? Model is Bosch SGS5312 if that is relevant

[iadom]

Re: dishwasher – white deposits

Useful info here. http://tinyurl.com/2lonzc

If you have eliminated all possibilties and the fault has appeared suddenly then you may have a failure in the regeneration system within the machine.

Jim

[uoapsdb]

Re: dishwasher – white deposits

Jim – yes I was wondering about the regeneration thing, it did start suddenly but I noticed also we were very low on salt when it started, I have filled up with salt but still no change after a number of washes.

Do you know if there are specific parts to do with the regeneration that could have failed and need replacing or are clogged up say ? I believe some machines have a button to reset the regeneration but there isn’t one on ours.

Would I be able to replace a part that is resonsible for the regeneration ? I put the model no. in the first post.

Thanks Steve

[iadom]

Re: dishwasher – white deposits

Gegsy, Boro & BSH man amongst others are our resident Bosch experts. Hopefully they will see this thread. If the resin in the regeneration unit has become gunged up then it is not possible to clear this, several other posibiltities such as regeneration valve failure etc.

Can you post the Enr number from the rating plate, that is essential for correct identification.

Jim.

[uoapsdb]

Re: dishwasher – white deposits

Thanks, I’ll post that when i get back from work today, I presume the plate is on the back somewhere, I havn’t seen it on the front.

[iadom]

Re: dishwasher – white deposits

The rating plate is usually engraved along the top inner edge or down the right hand side of the door.

Jim.

[Martin]

Re: dishwasher – white deposits

Looks like undesolved detergent to me? That would be caused by water starvation (i.e blocked water level sensor or sump hose?).

You can easily eliminate the salt and regeneration theory as I guess those deposits don’t taste salty at all do they? 😕

[uoapsdb]

Re: dishwasher – white deposits

Jim – I’ve posted a photo of the plate at :
http://myweb.tiscali.co.uk/barfblog/gra … G_3121.JPG
Looks like the E-Nr number is SGS5312GB/12. Hope this is
useful to your resident Bosch experts Gegsy, Boro & BSH man .

Martin – thanks for your input, all help is welcome.
Listening to the machine I can hear the water being
sprayed from the rotating arms.
Also, my understanding of the regeneration process is that it
introduces salt to the system to soften the water, if it wasn’t
working then salt would NOT be introduced to the system so the deposits
would not taste salty, does that make sense ? I did
try tasting the white deposits and it was pretty tasteless,
not soapy or salty. I believe lime can be left if the softener
is not working, not sure if lime has a taste.

[kwatt]

Water softening explained 😉

K.

[Trilobite]

Re: dishwasher – white deposits

Which detergents are you using?

Do you use Rinse Aid?

Have you tried running through ‘Finish Dishwasher Cleaner’?

[uoapsdb]

Re: dishwasher – white deposits

Trilobite – we normally use Ecover dishwasher tablets + rinseaid, the dishwasher has worked since new (7 years) on this.

Since the problem started we’ve tried :
Finish tablets, Calgon, and done a Dishwasher Clean (not sure if that was
Finish or not).

Seems more like something has gone wrong or changed. I was hoping someone had seen something similar before.

[Trilobite]

Re: dishwasher – white deposits

I hate to say this, but Ecover is not all it is cracked up to be. I and other members of my family experienced problems with the dishwasher detergent and rinse-aid. Other posters have previously had deposits appearing in their machines. My recommendation is to use well known brand names such as Finish or Fairy.

You say you have used CALGON: in the UK this is merely a water softening agent, to be added to washing machines in hard water areas.

The Bosch machine mentions “Finish und Calgonit”. “CALGONIT” is the foreign name for “FINISH”, and should not be confused with “Calgon”.

Worldwide, some countries call “Finish” a different name again: “Neophos” and “Electrasol”.

[uoapsdb]

Re: dishwasher – white deposits

Trilobite – thanks for that, I agree with what you say and if
I was responsible for the dishes I would use Finish,
but as we have a sceptic tank and her indoors tries to be
green we use Ecover.

But I think this is getting off the point.

Please could the experts Gegsy, Boro & BSH man comment on
the points raised so far before we fork out on a new one or a repair or
I blindly take the machine to bits. At the moment I havn’t got
a plan of action and need some help.

1) Jim said “If the resin in the regeneration unit has become gunged up then it is not possible to clear this, several other posibiltities such as regeneration valve failure etc. “

2) Martin said “Looks like undesolved detergent to me? That would be caused by water starvation (i.e blocked water level sensor or sump hose?). “

3) The deposits don’t taste particularly salty, what is it ?

These are the links to the photos of the deposits :
http://myweb.tiscali.co.uk/barfblog/gra … G_3109.JPG
http://myweb.tiscali.co.uk/barfblog/gra … G_3110.JPG
http://myweb.tiscali.co.uk/barfblog/gra … G_3111.JPG

and this is the link to the photo of the rating plate :
http://myweb.tiscali.co.uk/barfblog/gra … G_3121.JPG

Thanks Steve

[Martin]

Re: dishwasher – white deposits

uoapsdb wrote:At the moment I havn’t got
a plan of action and need some help.

Well you’ve had my help on this, I’ve been repairing Bosch dishwashers since 1975 and my diagnosis as to your problem stands. All talk of Calgon and Ecover is doing my head in, your machine needs servicing, hoses and pressure chambers cleaning etc. You may like to click on the link below for a local engineer to sort it? 😉

[uoapsdb]

Re: dishwasher – white deposits

Martin – thanks, looks like I’ll have to do that.

This site seemed to offer simple solutions (unblock this pipe, fix that dry joint) which saved a bit of money.

Is there nothing I can try myself ? Whats the best way into the machine to check the blocked water level sensor or sump hose as you suggest.

[Author]

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