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Hope your sitting comfortably people 🙂
1st call:
bosch dw not draining, simples, its the pump, its burnt out. ordered part,2nd call:
fitted pump then set machine off for test. bit of circulation, then reset. dw drains ok, but leak appears in base so turn on/off switch off and refit pump – o-ring got skewed. tilt dw back and to lhs corner to drain base.
ran it again, filled but no circ motor action or drain when reset. check pcb to find usual burn when theres a “no heat fault” sent to emw.3rd call:
last job of the day to refit pcb, and still same failures, although you can hear the diverter motor click clack, and the time display counts down as per normal just no circ motor action or drain when reset. pump does work if you activate flood control. piddled off by now and brain drained so go back4th call:
go back with 9uf cap, doesnt work. uplift machine to workshop. stripped down completely and removed a pistacio shell from outside circ pump housing. cleared heat exchanger of all muck. reassembled, now it fills and still wont circ pump or drain pump when reset, but during fill it does activate drain pump as a burst for less than a second. much like symptoms the models with a jug flow impeller give.kinda at the end of my tether with this, is it possible the pcb needs recalibrating since it came back from emw, or resetting like bosch’s w/ms need???
Re: bosch shv55m03gb/56 is playing up.
What kind of system does this model have for sensing that filling is complete?
Mike.Re: bosch shv55m03gb/56 is playing up.
im assuming its all done with the heat exchanger/pressure chamber assembly (482936) theres a turbidity senser that was sludgey in the element/diverter unit, but cleaned that out and looked ok? no jug impellor on this, the only other ir senser is on the salt tub, and cant see that affecting this. p/chamber has been completely cleared of limescale and not very sludgey. the rest im assuming is controlled by the pcb???
Re: bosch shv55m03gb/56 is playing up.
gandh1 wrote:Hope your sitting comfortably people
ran it again, filled but no circ motor action or drain when reset. check pcb to find usual burn when theres a “no heat fault” sent to emw.3rd call:
last job of the day to refit pcb, and still same failures, although you can hear the diverter motor click clack, and the time display counts down as per normal just no circ motor action or drain when reset. pump does work if you activate flood control. piddled off by now and brain drained so go backI had this exact fault today on a Siemens DW (plastic base model) Would click click on start up but no drain pump or circ motor action even on reset. Lift mushroom up…..drains. Found the burnt out heater joint too but no other signs of damage – Brand new control module fitted in the end. My guess is that EMW ( are they the company that repair pcb’s ? ) have repaired for the heater joint but there is more damage to one or more of the chips.
I’d hazard that it needs a new board
Re: bosch shv55m03gb/56 is playing up.
im with you on that, its my gut instict too, but thing is, i cant be sure the burn out is defo where the heater joints are, and customer so far hasnt even implied it wasnt heating either, but saying that, she is pretty blonde and i think her patience is wearing thin (“omg weve been without a dw for over a week now”) oh how terrible, silly thing is she has a house keeper who feeds the kiddywinks and does the washing up. is the new board likely to pop if i dont sort a heating fault out???
Re: bosch shv55m03gb/56 is playing up.
Didn’t know EMW were still doing dishwashers. I bet they don’t have a 100{e5d1b7155a01ef1f3b9c9968eaba33524ee81600d00d4be2b4d93ac2e58cec2d} success rate on them!
That pressure chamber has two three tag switches on it. It’s quite easy to push the connector on the wrong two tags of one of them IIRC. Or the microswitch could be duff?
Heater you could test separately on a flying lead to make sure it’s got no issues. Usually the relay joints / contacts just burn out because they’re at their rated limit (10A).
Mike.Re: bosch shv55m03gb/56 is playing up.
leavemetogetonwithit wrote:That pressure chamber has two three tag switches on it. It’s quite easy to push the connector on the wrong two tags of one of them IIRC. Or the microswitch could be duff?
yeah when you reminded me that the p/chamber controlled water fill, i remembered ive got a s/h bosch thats prolly got a decent p/c so will try that out tomorrow,
leavemetogetonwithit wrote:
Heater you could test separately on a flying lead to make sure it’s got no issues. Usually the relay joints / contacts just burn out because they’re at their rated limit (10A).How do you mean test separately on a flying lead ? its late and im still hurting from humping 2x ld w/d up 6 flights of steps for top floor letted properties today
Re: bosch shv55m03gb/56 is playing up.
Just put some H2O in the bottom, link up a separate three core lead with amp tags to the element and power it directly. Presumably you’ve already meggered everything so you know the insulation’s OK. You could even use an energy monitor or clamp meter to check it’s drawing a realistic current.
Mike.Re: bosch shv55m03gb/56 is playing up.
Martin wrote:Armpits to flying leads, the modules duff! 😉
Yes, the consensus was duff module.
ghand1 asked how he could check the heater wasn’t going to blow up an expensive new module.
No need for any of your armpits, thankyou 😛 .
Mike.Re: bosch shv55m03gb/56 is playing up.
leavemetogetonwithit wrote:No need for any of your armpits, thankyou 😛 .
Mike.
Apologies Mike, but I use Lynx which works wonders for me! 😀Re: bosch shv55m03gb/56 is playing up.
i use lynx too. i cant move for women…
…complaining.
GOOD NEWS: those lovely chaps at emw have credited our account for the board repair as it hasnt sorted things. muchos kudos tony 🙂
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