Bosch Maxx100

[robbra]

Hi
Sorry no E nr. anywhere.
Went out and unblocked sump hose full of scale and rubbish. She uses it to wash her horse blankets. Now it will only fill on 30deg and no other programme. She is adamant it worked on 40 before. I have checked valves and they all have the same reading so unless the pcb has gone I can’t see a reason unless she is telling untruths.
Any help welcome.
Thanks
Rob
PS pressure pot is clear

[Martin]

Re: Bosch Maxx100

The Enr no should be on the back though I would have thought? 😉

Is it both hot & cold fill then Rob? Works on rinses OK does it?

[robbra]

Re: Bosch Maxx100

Hi Martin,
Fills ok on rinses and is hot and cold but via a Y piece.
No E nr anywhere. It’s in a stables and subjected to all sorts of misuse and I might just walk away and give her the cheque back. I was hoping it was frozen up but alas no.
Rob

[leavemetogetonwithit]

Re: Bosch Maxx100

Did you check to see if power was getting to valve(s)? (I know it’s fiddly with those tiny connectors). And were valve filters clean and H2O pressure enough to open cold valve? Definitely sounds like some problem in that area. How often have you come across a Bosch module/timer causing such a fault?
Mike.

[robbra]

Re: Bosch Maxx100

Hi again,
Found Enr on old report WFL100GB/12
Have around 77 volts to hot valve but it doesn’t open but the cold does (only on 30 deg) with this voltage. readings on solenoids are all the same so why won’t the hot open? Surely also it won’t only be hot fill on 40 deg upwards and the cold should open too. No prob with heater or p/sw.
Really bugging me
Rob

[leavemetogetonwithit]

Re: Bosch Maxx100

I am 99{e5d1b7155a01ef1f3b9c9968eaba33524ee81600d00d4be2b4d93ac2e58cec2d} certain that there should be 240v or thereabouts to open the valve. (I’ve replaced these funny ones with universal types in the past, changing the connectors). So it sounds like there’s a fault in timer/module or the cable harness/connector or perhaps an earth leak somewhere?

On the other hand water valve faults on these are quite common IME so perhaps it’s worth trying in a new (standard,cheap) one and put the strange volts down to a mystery.
Mike.

PS. Wow! I’ve made it to super user! Is there a prize?

[Penguin45]

Re: Bosch Maxx100

Congats, Mike. You didn’t get the flashing lights, ring o’bells and the phone call from Ken? 😀

Board fault, almost certainly, BTW.

Chris.

[leavemetogetonwithit]

Re: Bosch Maxx100

Penguin45 wrote:Congats, Mike. You didn’t get the flashing lights, ring o’bells and the phone call from Ken? 😀

Chris.
Oh yeah, I get those all day long; I was hoping for something more like chocolate cream cakes or something. 😥

BTW, board for that machine is about £200 I think and AFAIK Tony doesn’t stock them, so where does that take us with our quality philosophy?
Mike.

[Penguin45]

Re: Bosch Maxx100

Probably falls into the “unlucky” category, rather than the “expected” one.

Of course, it isn’t really a £200 board. It’s probaly a £20-£25 board with a mark-up.

Chris.

[WhiteVanMan1]

Re: Bosch Maxx100

I came across my first dry joint on one of these bords the other day, highly unusual for this board. I know, dry joints are normally only found on the heater relay, but it’s worth checking if you haven’t already, it would explain the low voltage to the valve. Steve

[robbra]

Re: Bosch Maxx100

Thanks to all. I’m waiting for the thaw now as it is frozen solid in the stable and will check for dry joints then.
Rob
Congrats Mike 😆

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