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Klarstein thermoelectric mini fridge stopped cooling.

Discussion in 'General Electronics Discussion' started by Triiickie, Aug 5, 2021.

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  1. Triiickie

    Triiickie

    4
    0
    Mar 11, 2013
    Hi

    I wonder if anybody has further knowledge or can help me with my query on how to fix my mini fridge which has suddenly stopped cooling. Rather than re-write my issue posted elsewhere, it would be fantastic if somebody closer to the UK could help. I'm happy to post the circuit board if need be.

    All the details are here:

    https://www.doityourself.com/forum/...ermoelectric-mini-fridge-stopped-cooling.html

    Anything that could help me would be amazing.
     
    Last edited: Aug 5, 2021
  2. bertus

    bertus Moderator

    2,503
    976
    Nov 8, 2019
    Hello,

    Strange, I have answered the question before.
    The second fan only runs when the cooling unit is active.
    Klarstein comment.jpg
    Is the temperature regulator in working order?

    Bertus
     
  3. Triiickie

    Triiickie

    4
    0
    Mar 11, 2013
  4. bertus

    bertus Moderator

    2,503
    976
    Nov 8, 2019
    Hello,

    On the PCB there is connector CN7 (it mentiones K next to it).
    Is that connected to the thermostat?
    Klarstein pcb connectors comment.jpg
    If it is connected to the thermostat, take it off and see if it reacts with a multimeter in ohms range , with the measuring pins on that connector , when you turn the thermostat knob.

    Bertus
     
  5. Triiickie

    Triiickie

    4
    0
    Mar 11, 2013
    Hi. I'm showing my novice(ness) now. So I unplug that connector and use the multimeter (ohms is turn dial right?) on the plug part of the wire (red on one and black on other) or on the socket on the board. Guessing fridge needs to be turned on.
     
  6. bertus

    bertus Moderator

    2,503
    976
    Nov 8, 2019
    Hello,

    Take the plug off and put the measuring pens in the plug:
    Klarstein pcb connectors measure.jpg
    Bertus
     
  7. bertus

    bertus Moderator

    2,503
    976
    Nov 8, 2019
    Hello,

    I also want to mention, that it is not a thermo electric cooler, but a compressor.
    On the lable there is stated R134a/40 g, wich is a coolant for a compressor.

    Bertus
     
  8. Bluejets

    Bluejets

    5,611
    1,186
    Oct 5, 2014
    There are thermoelectric units which use freon.
     
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