Bosch Dishwasher Heat Pump failed prematurely

[Twoten]

I replaced the heat pump on a Bosch SPV40C10GB/28 7 months ago.

7 months on the element in this heat pump has an insulation fault.

The filters and spray arms are clean. these heat pumps are clearly not as reliable as the instantaneous water heaters. The spray arms and filter appear clear and the Altern.water distributor appears to be working. What are the things to look out for or test that could cause these pumps to fail so quickly?

Also:
Part number of original part fitted 00755078. When ordering there were two part numbers, the difference being this part was sold as “without care product”.

According to the Bosch website the new pump part number is 12019637 and the other part number is no longer listed for this machine. Does anyone know if the new heat pump is still the same or has it been modified?

Thanks,

Keith.

[Twoten]

Re: Bosch Dishwasher Heat Pump failed prematurely

electrofix wrote:when you see how flimsy this heater is its not surprising it fails

Cheers Dave.

Interesting! Not seen inside one of these before.

If the user fails to keeps the filter clean, would the resticted flow cause this to fail?

[electrofix]

Re: Bosch Dishwasher Heat Pump failed prematurely

exactly took this one apart as a matter of interest

you can see the heater and also the NTC’s

Dave

[eastlmark]

Re: Bosch Dishwasher Heat Pump failed prematurely

Twoten wrote:

Also:
Part number of original part fitted 00755078. When ordering there were two part numbers, the difference being this part was sold as “without care product”.

According to the Bosch website the new pump part number is 12019637 and the other part number is no longer listed for this machine. Does anyone know if the new heat pump is still the same or has it been modified?

Thanks,

Keith.

Anyone know what this “care product” is?

[alster]

Re: Bosch Dishwasher Heat Pump failed prematurely

Could it be the plastic trim/baffle that clips into the sump that I mentioned in the other thread running about heat pumps?

[eastlmark]

Re: Bosch Dishwasher Heat Pump failed prematurely

alster wrote:Could it be the plastic trim/baffle that clips into the sump that I mentioned in the other thread running about heat pumps?

I have yet to see the item you have mentioned in any of the boxes I have opened lately.

[Twoten]

Re: Bosch Dishwasher Heat Pump failed prematurely

alster wrote:Could it be the plastic trim/baffle that clips into the sump that I mentioned in the other thread running about heat pumps?

I don’t think it can be.
The description is

BSH wrote:Heat pump complete, without care product; For countries where the care product is not allowed to be imported or sold

If it was the baffle, why would they not be allowed to import it.
Googling Bosch care product suggests it’s a cleaner which would make a bit more sense with regards to some countries not permitting the import but if this is the case then the one that logically should have the care product, doesn’t.

eastlmark wrote:
I have yet to see the item you have mentioned in any of the boxes I have opened lately.

The Heat Pump fitted as a replacement on this job included the plastic baffle that clips in front of the pump inlet port inside the sump. When comparing with the original baffle the front lower edge is slightly lower so it reduces the gap by about 1 to 2mm. I would have though this would reduce the water flow and increase the possibility of failure but I guess we have to assume Bosch know what they are doing 😕

[alster]

Re: Bosch Dishwasher Heat Pump failed prematurely

Perhaps it’s to stop the groaning noises when its washing & nothing to do with heater failure. I know it’s an old chestnut-but why are these companies so secretive about tech info?? We just have to guess most of the time.

[eastlmark]

Re: Bosch Dishwasher Heat Pump failed prematurely

Twoten wrote:

alster wrote:
Could it be the plastic trim/baffle that clips into the sump that I mentioned in the other thread running about heat pumps?

I don’t think it can be.
The description is

BSH wrote:Heat pump complete, without care product; For countries where the care product is not allowed to be imported or sold

If it was the baffle, why would they not be allowed to import it.
Googling Bosch care product suggests it’s a cleaner which would make a bit more sense with regards to some countries not permitting the import but if this is the case then the one that logically should have the care product, doesn’t.

eastlmark wrote:
I have yet to see the item you have mentioned in any of the boxes I have opened lately.

The Heat Pump fitted as a replacement on this job included the plastic baffle that clips in front of the pump inlet port inside the sump. When comparing with the original baffle the front lower edge is slightly lower so it reduces the gap by about 1 to 2mm. I would have though this would reduce the water flow and increase the possibility of failure but I guess we have to assume Bosch know what they are doing 😕

not doubting you but did 2 today, no baffle or mention of it in box.

[aqualectric]

Re: Bosch Dishwasher Heat Pump failed prematurely

I have only had one heatpump supplied with the new baffle; none before or since. Agree it narrowes the gap slightly and that is counter intuitive. It’s blue to replace the black original.
Scaling is present on most of the heater cylinders ( I show the customer the heater to reinforce the fragility of the design; where interested :rolls: ) but the ‘pop’ is nearly always at the bottom section of the heater cylinder where it meets the classic cabinet leak water. The scale will often have a burnt smell so overheating is clearly an issue; hence the question of the baffle.
But if it was designed properly that would be a good source of income gone. They are easy and quick to fit and the customer always says go ahead. 8) No complaints here!

Steve.

[eastlmark]

Re: Bosch Dishwasher Heat Pump failed prematurely

a little bit of google translate on the word Care in german is Pflege which if googled regarding dishwashers takes you to a Finish page, so I am guessing the care product is what we call rinse aid. Why it would be banned in some countries I do not know and what difference it would make if used with the 00755078 heat pump I am not sure. I do have a recall tomorrow on one of these with that pump fitted that is reported as not drying. (not E09 though so assume it is heating).
Further reading suggests a lot of negative comments about rinse aid and it being a health risk. (we have all seen what it can do to wiring insulation and lino when leaked upon). I cannot find anywhere that has specifically banned it though.

[Twoten]

Re: Bosch Dishwasher Heat Pump failed prematurely

I called BSH to try a clarify this. Customer services couldn’t give me an answer so referred it to technical.
According to technical the Care product is the Dishwasher cleaner 00311565.

[eastlmark]

Re: Bosch Dishwasher Heat Pump failed prematurely

Twoten wrote:I called BSH to try a clarify this. Customer services couldn’t give me an answer so referred it to technical.
According to technical the Care product is the Dishwasher cleaner 00311565.

Interesting as the tech docs for that cleaner states it cannot be sold in the USA…. (where of course we all know you can buy a gun over the counter-go figure). If so why do they market the heat pump here and what difference does it make to the heatpump? (given that no one will ever use the cleaner).
Notice that UKW shop list 00755078 for a whole heap of models that BSH list 00651956 as being the correct one… Does anyone have an official “where used list”?
As for my recall, checked out heating fine as far as I can tell and have upped the rinse aid setting and see what happens.

[Twoten]

Re: Bosch Dishwasher Heat Pump failed prematurely

eastlmark wrote:
As for my recall, checked out heating fine as far as I can tell and have upped the rinse aid setting and see what happens.

I’m interested to know if increasing the rinse aid solves the drying problem.
I have a friend with a Bosch machine that isn’t drying but it does heat.
The problem appears to coincide with changing the rinse aid to Lidl’s so I have told him to go back to Finish and see if the drying improves.

[eastlmark]

Re: Bosch Dishwasher Heat Pump failed prematurely

well this customer has reported that the rinse aid setting adjustment has made no difference to the drying performance despite a “huge cloud of steam” when the door is opened.
I have now fitted another heat pump but this time a 651956 rather than the 755078 so will report back once she has reported the outcome.

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