BOSCH dishwasher - back melting and cable burning...

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Old 09-13-14, 02:06 AM
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BOSCH dishwasher - back melting and cable burning...

Hi
I have a 7 yrs old bosch dishwasher that worked just fine so far
last time i operated it there was a smell of burnt plastic. after sniffing around i found out that the cable and the wall socket started to melt. the "isolating" back of the machine had bubbles and melting spotes where it was in contact with the pipes
i inspected the interior and the wiring and there was nothing wrong there

has anyone had this ? what do you think ? is it the heating element overheating and causing excesive amp draw? thermostate?

thanks
 
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Old 09-13-14, 03:36 AM
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Not the dishwasher guy but model # and pictures might be helpful.
 
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Old 09-13-14, 06:05 AM
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i inspected the interior and the wiring and there was nothing wrong there
Welcome,
You checked the interior of what? The dishwasher or the inside of electrical box serving it?
Shut off breaker to this outlet. It sounds like you have a really bad connection in that box, so bad as to cause arcing and it sounds like it even caught fire.
You wouldn't happen to know if you have aluminum wiring in your house? This was installed mainly in the 70's.

Please wait for appliance repair advice for the experts.
 
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Old 09-13-14, 08:25 AM
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after sniffing around i found out that the cable and the wall socket started to melt.
Like mentioned previously..... that would be caused by a worn out receptacle. The heating element does draw extra power which would accentuate the problems with a loose connection.

the "isolating" back of the machine had bubbles and melting spots where it was in contact with the pipes
I'm trying to figure this one out. What pipes would be behind a dishwasher hot enough to melt plastic ?????
 
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Old 09-15-14, 08:30 AM
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model is 46M42EU, attached a pic of the back of the machine.
Handyone, the wiring is from copper
PJmax, perhaps i didnt explain well. the whole back of the machine is melting. there is an impression from a water pipe that was pressed against it. it is from the heat of the machine and not of the water pipe.
by a worn out receptacle...do you mean that i need to replace the heater?
thanks

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by the way, for those of you who are familiar the bosch heating unit. why does it have 4 wires ?
one "pole" has one wire connected and the second "pole" has 3.
 
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Old 09-15-14, 11:16 AM
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ok i found something
took the connection box off , the capacitor is burnt. however there is no short between the connection
attached a pic. can this explain what happened or maybe the capacitor failed for the same reason that causes high amp draw? ?

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Last edited by PJmax; 09-15-14 at 08:14 PM. Reason: fixed pic
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Old 09-15-14, 08:37 PM
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You need to change your location to non-US. Il is Illinois.

I have no service info at all on the model number you left.
There are 8 different Bosch heating units that I know of. Some have a water sensor, some have a turbidity sensor.

I'm looking at the picture of the back of your dishwasher. I can't tell what I'm looking at. I don't know why your cabinet is melting but it shouldn't be.

You may need to consult a local servicing company in your area.
 
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Old 09-15-14, 09:06 PM
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thanks, i changed the location
perhaps it is a code for a European model
its the noise reduction capacitor. thank you for the advice anyway
 
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