Bosch SGS4302 – not heating up and stuck on 1 minute

[Martin]

Re: Bosch SGS4302 – not heating up and stuck on 1 minute

davidros wrote:Given earlier symptoms etc is the consensus that it is now likely to be the module that needs sorting ? Anything I can do to firm this diagnosis up ?

Yes, take the module off and look closely at the PCB for burn marks. 😉

[davidros]

Re: Bosch SGS4302 – not heating up and stuck on 1 minute

Hi

I have the PCB boards out and I can’t see any obvious burn marks – whih seems strange. Could it still be the board ? Any idea what I should do next ?

Thanks

[davidros]

Re: Bosch SGS4302 – not heating up and stuck on 1 minute

Well on further looking there is a brown hold on the opposite side to the middle sized relay and a little discolouration. Its not that obvious but it could be the problem.

btw I have also discovered the test program and this runs to conclusion without any errors – or so it seems.

I guess I need to make decsion to now go and get the module repaired

Thanks David

[pteron]

Re: Bosch SGS4302 – not heating up and stuck on 1 minute

I have a similar problem and have the sides, bottom plate etc off. I’ve removed and cleaned the fill pipe highlighted on the first page, but can’t see how to disassemble the fill control – do I need to take off the water containing panel on the side or is there an easier way of getting the fill control out?

Any pointers gratefully received.

[davidros]

Re: Bosch SGS4302 – not heating up and stuck on 1 minute

Hi

Just to let you know that I used the repair service (see ebay in the UK) for the module board. Received back in less than 48 hours from sending – and all now works. Great !

Thanks for the advice etc on this thread that got me to this point

Cheers, David

[MichaelC]

Re: Bosch SGS4302 – not heating up and stuck on 1 minute

Hi there,

First can I say how valuable this thread seems to be and thanks to all who have contributed.

I have had all the same symptoms with my machine as others have described: 2HR cycle times which then stick on 1MIN and run with cold water.

After cleaning the matrix and the pipes the problem persisted. Next I checked the control board and could see no visible burnt out points. Next tested the heater itself and found it an open circuit.

£85 and 3 hours later I have the new heater fitted, which was too difficult.

Made sure to add salt and ran the machine.

The water IS now heating up nicely but the display is still on 2HR.
I think I read somewhere that the machine needs to complete a new cycle before the times readjust, however, I can find no mention of this here by anyone who has had success with their repair.

Can someone knowledgable please confirm if this is the case, or do I still have a problem?

Also, I have 2 screws left over. I labelled them ‘front box’ but cannot identify what this was or where they are from. Also, 2 pairs of white blocky plastic. I’m sure they are not critical but I’d like to have it right. Anyone any ideas on these? I can upload pics if that would help?

It may be worth mentioning that we inherited this machine from family. During our time with it (3 years) we never added any salt (thinking it unnecassary with all-in-one tablets) and also haven’t rinsed dirty dishes before loading them. We also live in a hard water area.

Any help with be gratefully recieved.
Michael

[nomadPaul]

If you host the pics on photobucket or image shack andpost them on here , we may be able to help.
Are the ‘blocky plastic things about 3 – 4 centimetres square with slots in the back ? They may be the blocks that fit between the outer door and hinge brackets at the bottom edge. IIRC they stop the door from buckling along its lower edge .

[total_numpty]

Re: Bosch SGS4302 – not heating up and stuck on 1 minute

Good evening.

I have a Classixx dishwasher – machine number SGS55C02GB/01. It’s just under six years old.

My machine has always had a ‘long cycle’. The eco cycle (55 degrees) takes about 150 – 180 minutes. The 60 degree cycle about 130 minutes and the 70 degree cycle about 120 minutes. There’s also a rinse and a quick cycle.

Anyhow, since the machine was about two years old it has occasionally simply stuck on the 1 minute code. The thing that is confusing is that this is only an occasional thing – sometimes it works, sometimes it doesn’t.

More recently, it’s had times when it will work perfectly for about 5 or six washes – then it won’t work for 5 or six washes.

Anyhow, based on what I’ve read on this thread, I today tried to take the PCB out to have a look. Wasn’t fully able to take the board out but was able to unplug all the connectors and plug them back in. Can’t see any damage anywhere. Put the machine back on though and it is currently heating. I also (yesterday) stuck some soda crystals in and ran the machine on a short cycle (did this twice).

Now I’m unsure whether the flushing with soda crystals has done the job and unplugging and replugging the pcb is just luck. I flushed the machine about two weeks back with soda crystals when it wasn’t heating – it started working about three cycles later.

So, I’m confused as to whether the issue is fat build up on something or whether the pcb is simply dodgy.

At the moment I’m just pleased that at this precise moment, the machine is working. I feel though that in a cycle or two from now, it will be back to its old tricks.

Thanks for reading

G

[Specialist01269]

Re: Bosch SGS4302 – not heating up and stuck on 1 minute

Hi: Personally i would leave well alone while it’s still working, sometimes on older machines just re-seating the connectors as you did can cure an Intermittent fault. I would’nt worry too much about it unless it goes again & then you can come back to us with the symptoms.

[greenwichpaul]

Re: Bosch SGS4302 – not heating up and stuck on 1 minute

Firstly, sorry for reviving an old thread – but it seems to cover exactly the problems I’ve had with our Bosch SRS45E42GB.

We had the common 1 minute problem. WE actually called out an engineer, he unclipped the control board and it started working again, briefly. Then it stopped once more.

WE called the engineer, he said it was probably the control board – but that we should throw out the machine, as the control board costs £100 and another part (the thyristor?) usually goes straight after.

I don’t want to machine to end up in landfill and can’t afford a new one. So I ordered a relay from China and replaced it (I couldn’t see burns on the board, so it’s possible it was OK). Still didn’t work.

THen I cleaned the large clear flat tank (the water matrix?) which was full of limescale and grease. I also cleared the right hand chamber (pressure chamber?) and the hose which runs to it.
EDIT: Just managed to find the reset buttons, which was part of the problem. It’s making encouraging noises and heating up, which it wasn’t before. Waiting…

Paul

Here’s the water matrix. Cleaner than it wsa, but note the right hand chambers are empty. When I first fitted it , I hand’t quite fitted the middle tube (with the white fitting and clip) properly, which I’m guessing is the feed. As far as I can tell it’s fitted correctly now, but if that’s where water is supposed to come in, it isn’t happening.

Secondly, the float chamber. There’s no water in there. When I re-checked this, I don’t think I’d fitted the switch correctly, but it does seem to be correctly fitted now. If you move the red float thing, something clicks and I can hear a relay or similar.

[greenwichpaul]

Re: Bosch SGS4302 – not heating up and stuck on 1 minute

Update: turned out all it took was a reset.

In short, I got a machine, which the local repairer said should be thrown out, working for £4, for the new relays (which took a few weeks to arrive from China), plus some descaler and bicarbonate of soda to clear the fat. I followed the advice here – new relay, cleaning water matrix, the float chamber, and the hose that feeds the float chamber.

Thanks to all of those who contributed help!

[Author]

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