- This topic has 13 replies, 4 voices, and was last updated 14 years, 11 months ago by
.
-
Posts
-
Hi,
I have a Bosch SGS43A32UK/01 dishwasher and it has served me well for what must be over 12 years now, so I’m not too surprised it has finally gone wrong! And we have very hard water here so even more surprising it lasted this long.. but enough rambling from me..!
Basically, the fault is that the dishwasher seems to run for what seems like forever until I either turn it off or reset it. The fill seems to working ok as does the drain pump (if I pull the round whatsit up, it drains fine).It appears that the water just isn’t getting hot.
After much Googling, I initially thought I had the well-documented problem of a faulty pcb, which suffers a dry solder joint. However, after dismantling mine and removing the pcb, I have discovered that this is not one of the affected models of Bosch dishwasher. The pcb on mine is different – however that did not stop me from resoldering most of it as it wasn’t brilliant looking. But certainly no obvious/bone dry solder joints to be seen in any event. However, it’s no different after refitting.
So, since this model is equipped with an instantaneous water heater (and I’m in a VERY hard water area) I am now thinking that this has possibly failed.
So my questions are:
a) Does anyone concur with this diagnosis (or could it still be the pcb), and:
b) How the dickens do I get at the gubbins underneath to replace said heater matrix.
Many thanks,
Paul.
Re: Bosch SGS43A32UK/01 runs forever and not getting hot
TerminatorTX wrote:a) Does anyone concur with this diagnosis
Definitely!
TerminatorTX wrote:b) How the dickens do I get at the gubbins underneath to replace said heater matrix.
The answer lies in the question, from “underneath” 😉
Re: Bosch SGS43A32UK/01 runs forever and not getting hot
lol.. so I assume from that answer there is a maintenance hatch/panel/plate underneath somewhere so obtain access to the gubbins? I had a quick look from the lower-side and decided to ‘come back later for another look..’ a la crossword.
If I do a search for the part, I get varying results from varying websites but I’m not really sure where to order it from. espares.co.uk are coming in at 79.99 (not sure if right part though) which seems to be pretty cheap.. anyone used them on here? Seems to vary anywhere up to around the 105 quid mark. Failing that, anyone else to try?
Finally, how many ohms should read across the terminals of the IWH? I assume that open circuit indicates it being faulty? Just wanna make absolutely sure it’s defective before shelling out best part of a hundred nicker!
Once again, thanks for your assistance
Paul.
Re: Bosch SGS43A32UK/01 runs forever and not getting hot
DOH! Well it might help if I checked the parts store on here! :rolls: Sorry about that! I just thought it was a forum.. The post to another site was a completely innocent mistake and I meant no malice by it, so apologies once again.
Only thing is when I check the three water heaters listed for Bosch, my model dishwasher isn’t shown (but very close – SGS43A42GB/01 – mine is SGS43A32UK/01).
Which of the 3 would I need to order?
Re: Bosch SGS43A32UK/01 runs forever and not getting hot
TerminatorTX wrote:lol.. so I assume from that answer there is a maintenance hatch/panel/plate underneath somewhere so obtain access to the gubbins? I had a quick look from the lower-side and decided to ‘come back later for another look..’ a la crossword.
THIS is the one you need.
No easy access, top, both sides, front plinth, door and the whole of the inner stainless steel tub have to be removed. Definitely not a simple DIY job. 😉
Re: Bosch SGS43A32UK/01 runs forever and not getting hot
iadom wrote:
TerminatorTX wrote:
lol.. so I assume from that answer there is a maintenance hatch/panel/plate underneath somewhere so obtain access to the gubbins? I had a quick look from the lower-side and decided to ‘come back later for another look..’ a la crossword.THIS is the one you need.
No easy access, top, both sides, front plinth, door and the whole of the inner stainless steel tub have to be removed. Definitely not a simple DIY job. 😉
Not on this model Iadom !! This is the grey base model.
Best thing is to unplug it , disconnect the inlet hose , get all the water out of the tub and then lay the appliance on its back . You will then find a metal plate underneath which when removed will reveal all !!
Re: Bosch SGS43A32UK/01 runs forever and not getting hot
Strange when I put that enr number in I got the pictures of the sealed base model. 😕
😳 DOH, should have clicked on another page. sorry.
Re: Bosch SGS43A32UK/01 runs forever and not getting hot
iadom wrote:Strange when I put that enr number in I got the pictures of the sealed base model. 😕
😳 DOH, should have clicked on another page. sorry.
I had to double check myself 😉Re: Bosch SGS43A32UK/01 runs forever and not getting hot
Excellent chaps! I appreciate the replies.
Will now have to wait until work goes quiet before carrying on with it (or until the crockery hits the ceiling, whichever comes first) but will post back with the next chapter.
Can I just use the formula R = (V x V) / P where V is the voltage powering the element, P is the power the element uses in watts and R is the resistance – to measure the IWH?
If yes, then does anyone know the wattage of the IWH so that I can measure the ohms across it?
Do most of them just go open circuit anyway?
Re: Bosch SGS43A32UK/01 runs forever and not getting hot
TerminatorTX wrote:then does anyone know the wattage of the IWH so that I can measure the ohms across it?
Usually around 26 to 30 Ohms
TerminatorTX wrote:Do most of them just go open circuit anyway?
The majority do yes, and many where the internal insulation breaks down and therefore give a dead short to earth. If you haven’t been using salt in the water softener, by the way, then chances are the heater will quickly fail. 🙁
Re: Bosch SGS43A32UK/01 runs forever and not getting hot
Martin wrote:
TerminatorTX wrote:
then does anyone know the wattage of the IWH so that I can measure the ohms across it?Usually around 26 to 30 Ohms
TerminatorTX wrote:Do most of them just go open circuit anyway?
The majority do yes, and many where the internal insulation breaks down and therefore give a dead short to earth. If you haven’t been using salt in the water softener, by the way, then chances are the heater will quickly fail. 🙁
Great stuff! Thank you. 😀
I have used salt for the entire life of the unit, but I had a weird scenario about 9 months ago whereby I realised that I hadn’t changed the salt for a fair while, but the salt light never came on. Turned out that the salt HAD run out but had left weird, rock hard crystals of some kind (salt or some by-product of broken-down salt(?)) behind, which were fooling the sensor into thinking there was salt. I cleared it by tipping some boiling hot water from the kettle in there to clear away all the crud, and as soon as I did that the light came on. So I could have been running it without sufficient salt for a while and thus contributed to a possible premature failure.
But I have to say that a first failure in 12-15 years is very impressive (bought it late 90s).
Anyway, will report back once I have removed the heater.
Re: Bosch SGS43A32UK/01 runs forever and not getting hot
TerminatorTX wrote:(bought it late 90s).
It’s not that old, 6 years at most I reckon? What is the FD number anyway (next to the model no)?
Re: Bosch SGS43A32UK/01 runs forever and not getting hot
Martin wrote:
TerminatorTX wrote:
(bought it late 90s).It’s not that old, 6 years at most I reckon? What is the FD number anyway (next to the model no)?
Under the model no. it says: FD 8211 [long space] 01766
Is that the date code?
- You must be logged in to reply to this topic.