What is this piece?

[satsat]

Hi to all,

I’m trying to repair a Siemens KG36NA73/05 freezer the problem seems to be in the no-frost module.

I’ve noted the freezer has a temperature sensor which I believe is OK (because the resistance is changing with the temperature) and also another piece:

I have no way to find exactly what is this piece and how to test it, in the ITV METALFLEX website there is no information at all, it seems this is some kind of thermal switch but I’m not really sure of how to know if it works correctly or where to obtain a replacement.

Could someone be so kind to tell me what is this?. Is this a thermal switch? Is this normally open or normally closed? At what temperature is supposed to change the state?.

The problem is that the freezer is accumulating ice and prevents the upper part (fridge) from refrigerating correctly, so I’m sure this is a problem with the no-frost system. I have tested the heater and the thermal sensor and they are OK so it seems to me the problem is in this piece.

In my tests is always open (infinite resistance) even if you put it in a 100C water or a glass with ice. Is this switch supposed to be closed normally and open starting at 73C? If so it seems is broken, do you know the spare part I can use?.

Thanks to all!

[kwatt]

Re: What is this piece?

It looks like it could be some sort of thermal fuse which, if tripped, could well be open circuit all the time.

If you email Dave on spares@ukwhitegoods.co.uk he should be able to get one if it’s available.

K.

[Martin]

What is this piece?

…..or a TV/radio filter?

[admin]

Re: What is this piece?

Hi

That’s a thermal fuse. should be normally closed.It tells you its cut off temperature of 72oc and its a one shot dead only.

Bryan

[Author]

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