Bosch not taking in enough water

[admin]

Re: Bosch not taking in enough water

Hi Martin,

I haven’t put it all back together yet – was just concerned a bit about the amount of crud that came out and didn’t want to put it all back before checking on the forum.

I’ll put it back together now and give it a go.

I’ll let you know how it goes.

Thanks for the advice/help so far 🙂

[admin]

Re: Bosch not taking in enough water

Hi Martin,

good news 😀

Water coming in fine now.

Saw the little trip switch firing 3 times as described by Penguin45.

The job’s a good un.

Thanks again for all the help guys.

[Penguin45]

Re: Bosch not taking in enough water

Well done – result. It doesn’t take much, so make sure the heavy stuff gets rinsed off before going in the dishwasher. That tube is a backwater when running and stuff settles back into it. SpagBol is really bad……… 😆

Regards,
Penguin45.

[Machina]

Re: Bosch not taking in enough water

I’ve just had this problem with my Bosch Dishwasher, but luckily for me it was under warranty. The engineer mentioned that it was clogged, which surprised me. Is this problem only common with Bosch Dishwashers? It seems like a really bad design to me. 😕

[Martin]

Re: Bosch not taking in enough water

Machina wrote:The engineer mentioned that it was clogged, which surprised me.

It is very likely ‘the clogging’ (in our professional experience that is) is most likely due to customer misuse? *and that the Bosch engineer just cleared it for you and went on to his next call without charging you for his time. Bosch dishwashers are extremely reliable and do not suffer “Bad design” faults to my knowledge :lesson:

Martin

* Always take extreme care when removing and cleaning the fine filters. Do not use you machine as a waste disposal unit by ensuring you remove all loose food deposits from plates before loading the machine!!!

[Machina]

Re: Bosch not taking in enough water

I don’t think I misuse my dishwasher, and I believe that this is just used by ‘Engineers’ (or as I call them Technicians) to cover for bad design. I have used 3 makes of dishwasher in my life, a Zanussi, a Hotpoint and a Bosch. Only the Bosch suffers from this problem.

The Bosch had become blocked with grease, not food particles, and if it cannot handle a greasy pan used for roasting then it’s pretty poor in my opinion.

[clivejameson]

Re: Bosch not taking in enough water

Machina wrote: I have used 3 makes of dishwasher in my life, a Zanussi, a Hotpoint and a Bosch. Only the Bosch suffers from this problem.

In fact the Hotpoint you had was a Bosch machine with a different name printed on the front, and i’ve had to unblock plenty of Zanussi’s over the years….
Unfortunately, animal fat is often liquid when it enters the machine (via crockery etc) but quickly solidifies when it meets the cold surfaces inside…best bet, and something I always advise, is to get the hot tap running and put the really greasy stuff under it for just a second or two before putting in the machine….whatever the make!

[kwatt]

Re: Bosch not taking in enough water

Hi Machina,

This can often be caused by poor use of detergent and/or poor installation on some appliances when the waste is not fully evacuated from the machine or re-enters from the waste, so it’s a pretty common problem and, as Martin rightly says, it is often down to customer missue. Customer missuse is a generic term that we tend to use (due to manufacturers wording it that way) for any problems that arise that are not actually the fault of the appliance as such, it is not meant as a slight or insult as most customers simply don’t know any better more often than not.

Bad design or not, people these days want “A” rated appliances, this means less water, less water means less to suspend the grease in and places more emphasis on correct use of detergents and loading. Facts I’m afraid all too often ignored by customers and the machine you buy now is entirely different from a machine you bought ten years or more ago in those areas.

The big change in the past few years is the move towards metering tanks for water softening and energy consumption reduction and these do block, end of story. You can read why this system is employed here;

http://www.ukwhitegoods.co.uk/modules.p … age&pid=96

Since basic chemistry teaches that to suspend grease you need a suitable detergent to loosen it and suspend it in fluid and enough water, heat and agitation to accomplish this we often find that these sort of problems come down to the useage of the machine, not the machine itself. Whether the manufacturer/s explain that well enough or offer enough instruction to people is open to debate.

If you read that through you should find the answer to your problem and why many an engineer, or technician if you like, will be quite blase and offhandish about it as we see it all the time.

K.

[Machina]

Re: Bosch not taking in enough water

clivejameson wrote:
Unfortunately, animal fat is often liquid when it enters the machine (via crockery etc) but quickly solidifies when it meets the cold surfaces inside…best bet, and something I always advise, is to get the hot tap running and put the really greasy stuff under it for just a second or two before putting in the machine….whatever the make!

To me this totally defeats the purpose of a dishwasher!!!! I’d rather wash the dishes as I’ve probably done 80{e5d1b7155a01ef1f3b9c9968eaba33524ee81600d00d4be2b4d93ac2e58cec2d} of the work if I follow all the suggestions here.

I didn’t spend £450 on a dishwasher to spend lots of time at the kitchen sink, just in case my dishwasher cannot handle dirty plates! I thought that was a dishwashers job???? I’d understand if I was pouring lots of grease into it, but a Sunday roast every week; come on it should handle that!

[clivejameson]

Re: Bosch not taking in enough water

Machina wrote:

clivejameson wrote:

I didn’t spend £450 on a dishwasher to spend lots of time at the kitchen sink, just in case my dishwasher cannot handle dirty plates! I thought that was a dishwashers job???? I’d understand if I was pouring lots of grease into it, but a Sunday roast every week; come on it should handle that!

That old chestnut!

All the makes you mentioned can and do handle dirty plates…extremely well if given the correct wash cycle and detergent doseage.
I agree it would be nice if a dishwasher could handle anything thrown at it but unfortunately i’ve yet to see one! 😆

[Machina]

Re: Bosch not taking in enough water

kwatt wrote:
Since basic chemistry teaches that to suspend grease you need a suitable detergent to loosen it and suspend it in fluid and enough water, heat and agitation to accomplish this we often find that these sort of problems come down to the useage of the machine, not the machine itself. Whether the manufacturer/s explain that well enough or offer enough instruction to people is open to debate.

If you read that through you should find the answer to your problem and why many an engineer, or technician if you like, will be quite blase and offhandish about it as we see it all the time.

K.

I always use the 70oC wash. I’m assuming the water is at this temperature when it is circulating around the appliance and that a decent detergent (i.e. Finish) would keep the grease suspended at that temp. I would also assume that this greasy mixture is pumped straight out of the machine, hence my lack of understanding of hot grease, cold pipe. I would understand it if the drain got blocked, but not the recirc pipe. Btw, can anyone tell me the ID of the pipe that blocks?

Dishwasher manufacturers must know of this problem, and there must be a way of allowing the user to clean these parts without calling an Engineer/Technician/Whatever; whether this means use of chemicals or a mechanical method.

My previous dishwasher was only 4 years old and it was A rated I believe. I was hoping to move forward with the Bosch, not backwards!

I am not interested in whether the service agent has seen this problem once or a thousand times, they should always treat the customer with respect. Maybe this is why service industries have such a bed reputation. The gentleman that fixed my dishwasher was very offhandish and I just thought that his nice boiler suit and little laptop had gone to his head. 🙄

Not all service people are like this, but you only remember the ones that give you bad service. The last Serviceforce rep who fixed my Zanussi washer/dryer was outstanding. He took me through what had happened and was very pleasent to talk too. 😀

[Machina]

Re: Bosch not taking in enough water

clivejameson wrote:

Machina wrote:

I didn’t spend £450 on a dishwasher to spend lots of time at the kitchen sink, just in case my dishwasher cannot handle dirty plates! I thought that was a dishwashers job???? I’d understand if I was pouring lots of grease into it, but a Sunday roast every week; come on it should handle that!

That old chestnut!

All the makes you mentioned can and do handle dirty plates…extremely well if given the correct wash cycle and detergent doseage.
I agree it would be nice if a dishwasher could handle anything thrown at it but unfortunately i’ve yet to see one! 😆

If I am using it normally, then why did it block? Is the pipe too small prehaps?

[kwatt]

Re: Bosch not taking in enough water

Machina,

I’ve got the same problem with my very own Smeg, they block up over time, end of story and that’s another upmarket brand, not the cheap swag. However what I was saying is that all the manufacturers in dishwashers, just as in washers, have moved towards these silly “A” ratings fro the EU. The only way to accomplish a massive reduction in energy is to reduce the energy used in heating, it’s not rocket science to work out that it takes a certain amount of energy to heat a particular volume of water, so how do you get around that problem? Simple, you reduce the water intake so you’re heating less and, since you use less water, it looks even more ECO friendly. That is until the customer discovers that you have to pre-wash everything or do it twice! 🙄

We get blockages like this all the time (as well as a host of other issues), it’s just a part of daily life these days, just look at the number of posts on here about E2 errors. Admittedly we do see far less on the Bosch/Neff/Siemens but that doesn’t mean that they don’t suffer from the same syndrome.

But people will want cheaper appliances that consume less, most seem to care little about actual performance until they have to complain about it after the initial purchase. If I had a pound for every time I’d heard, “but my last machine worked a lot better” (or similar) I’d be a very rich man by now.

K.

[diyplumb]

Re: Bosch not taking in enough water

Hi again folks 🙂

This same bosch dishwasher is lasting well, but now it has a new problem, wanted to check if there are any fixes or tests to try out before I look into a new dishwasher.

I cleaned out the pipe as previously described but the problem seems to be that water is getting into the machine very slowly. It will eventually fill and do the wash…etc but it takes hours to finish the complete cycle.

with the side panel on left removed, I can see the incoming water rate is very slow,
. I suspect it is related to the aquastop device.

any suggestions gratefully received

thanks 🙂

[clivejameson]

Re: Bosch not taking in enough water

All you can do is rule out everything else…check that the supply pressure and flow rate is good, and the filter in the aquastop is clear. If that’s all ok then it will be the aquastop unit itself.

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