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HowToDo Question : What failures on a Nespresso coffee maker Krups XN 2001 ?

Waiting for a better solution What failures on a Nespresso coffee maker Krups XN 2001 ?

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PostPosted: 06 Dec 2010 0:43 
Hello everyone, I

failure on my Nespresso machine. So I removed, not without difficulty, but I can not find the problem. The mechanism is simple.

Here's what I tested:
- Dismantling the pump is direct connection to 220V. Works
- The heater is hot when I start the coffee maker.
- The 2 thermal fuses on the heater are passing.
- The temperature sensor looks good to me. It indicates 40Kohm cold 7kohm hot. I put in parallel with a 33K for the decline in 5Kohm hot, without success. I also declined to 3kohm to see, and then the machine will blink rapidly to indicate a pb when powering up.
- The piping is not clogged. I plugged the pump Live 220 in the machine, and water flows.

So there I dry. Symptoms are:
Brewer lights, the flashing green button until the desired temperature. Button stops flashing. -> Normal behavior.
Once I start the coffee, the pump starts a split second and everything goes.

anyone know what it is possible failures on this unit.

Thanks in advance

PostPosted: 06 Dec 2010 1:36 
hello, and the electronic module, you have verified ????

PostPosted: 06 Dec 2010 2:19 
How to test and that test? There is no trace of black. It consists of a triac, 5 capacitors and a microcontroller in CMS on the backside. I put a picture here:

600BW BTB12 triac is marked
The 2 large capacitors are marked 220n and 470n with the white label on the next 470 - EF0049972 ST7850803 DPAK230V
The 4 outputs are labeled from left to right: Heat Pump Neutral Line

PostPosted: 06 Dec 2010 4:44 
I can not help you more. C was just to give you a track more !!

PostPosted: 06 Dec 2010 6:02 
The triac is it ordered?

left leg in the photo

PostPosted: 06 Dec 2010 6:20 
How to test if it is ordered? To what extent should it do so.


PostPosted: 06 Dec 2010 7:23 
The moment resistance is heat, you need to measure an AC voltage (low) on both outer legs of the triac gate A1 and
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