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Had a call out to this 5 years old dw only been used 12 times. It was leaking very badly, I thought hmmm possibly jug impeller and opened up the sides (very difficult!) and found the splatters. So far so good or so I thought until I was told that the water seeped through the sump possibly via the bypass or heater.
Due to restricted access and poor design of dw base, I couldn’t see where it was seeping.
I carried out insulation test and it came up 0.3mohms. The electrics must have been sodden. I was left in a limbo and fear that I may have given bad advice that the machine was not safe even if I repaired the leak due the electrics being so sodden it would still be unsafe. Did I advise correctly or should I have done it differently?
I have the machine in my possession as the owner was at wits ends. I wanted to have another closer look and learn from it. Hopefully I should be able to correct it and contact the owner if they want it back.
What are your thoughts? I fear that after so many run in with dishwasher leaks knocked my confident on dishwasher repairs and made me question my ability. This was why I brought the dishwasher home to see how I would have done it differently.
Re: Bosch SGS model with plastic sump
As is the norm the model number would be a good thing to give us. :rolls:
Usual leaks are indeed due to the water point device on the heater box(if fitted on whatever model you have?). Circl pump shaft seal (impeller kit job). Early models suffered tub to base sealing probs and distorted base adjacent bottom door seal.
Re: Bosch SGS model with plastic sump
Sorry! SGS53C12UK/01
I try not to make a habit of posting without model number! 🙂
Re: Bosch SGS model with plastic sump
Turned out that it was the seal from the sump to circulation motor channel toward heater. Gained access by tilting on its back and removed metal base. Easy access to everything. I would have not done it at the customer’s house due to tiny kitchen.
A mere £10 parts. Still throws up low insulation 0.1mohms. Disconnected motor, heater and still get the same readings. Me thinks electronic board. Decided to let sit for few days to dry out and see what happens.
Would welcome other ideas…
Re: Bosch SGS model with plastic sump
twicknix wrote:Would welcome other ideas…
The PCB wouldn’t throw up a low insulation reading at all. Allowing the whole machine to thoroughly dry out will likely solve the problem anyway. The float micro switch and the heater box diverter motor are always subject to water ingress in cases like this too. 😉
Re: Bosch SGS model with plastic sump
I have let the dishwasher dried out and it is still coming up 0.1 ohms for insulation. I unplugged each components at a time and no change. I checked the heater, motor, drain pump, float switch, inlet valve, diverter motor, capacitor, suppressor.
I will check the electronic board.
Am I dealing with a very rare case of low insulation problem after a water leak from the sump when there’s nothing on the bottom indicates it?
Will have to work up the top now…
Re: Bosch SGS model with plastic sump
Always worth testing just the mains cable on its own as I have had a couple of Bosch mains cables go down (not necessarily this model) – neither showed any obvious signs of damage.
Jem
Re: Bosch SGS model with plastic sump
Checked the top – power switch, interlock and module…. Still coming up low insulation.
Wondering if the mains lead is the problem?
Not wanting to plug the machine in and see what happens as that would be foolish.
Oh yes my insulation tester is working perfectly well as I checked it against other appliances.
Re: Bosch SGS model with plastic sump
Turns out it was the mains lead. Thanks guys.
There was a minor hiccup at Connect over the mains lead. On their website there was a picture of the mains lead showing without the suppressor so I ordered a suppressor. Upon arrival the mains lead came with the suppressor which meant the suppressor I ordered is surplus to requirement.
The snag is that they are saying I need to go home and get a cancellation number then come back with the unwanted suppressor. I thought it was crazy so I asked if they could do it there and then. After few discussions they agreed to do it there and then.
Re: Bosch SGS model with plastic sump
Keep hold of the mains filter as they are always blowing! 😉
Re: Bosch SGS model with plastic sump
Martin wrote:Keep hold of the mains filter as they are always blowing! 😉
The odd thing, I did test the appliance with the suppressor removed and it still throws up low insulation. So it is the mains flex that was the problem. Will bear this in mind, thanks Martin.
Re: Bosch SGS model with plastic sump
thats one to watchout for on all appliances with a moulded plug, the first thing i do after i trace it to the cable is cut the plug off and wire up a new one.
Bob.
Re: Bosch SGS model with plastic sump
BobHope wrote:thats one to watchout for on all appliances with a moulded plug, the first thing i do after i trace it to the cable is cut the plug off and wire up a new one.
Bob.
If only I had thought of it in the first place, then I wouldn’t have gone into a lot of trouble with Connect, the diesel and the time taken to sort the parts out. There’s a box of 37 new plugs in the back of my van lurking somewhere in one of many boxes, a mere 30 pence each. Still a lesson learnt!
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