Question about Nespresso D300 Espresso Machine

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Hi My Nespresso M300 has started tripping the RCD power protector in my house. Any suggestions on how to diagnose the problem ?

Posted by Anonymous on


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Check no water has got into the machine or into the power connector. If the power cord is removable like the one on a kettle with the same connector you could try using this on the machine and see if it works. The chances are there is probably a fault in the heating element allowing current to leak causing the RCD to trip and you may need to have this replaced.

Posted on Mar 12, 2011

  • Anonymous Mar 13, 2011

    Thank you for you response, will try swaping the power cord. I was able to get the machine to work without tripping the RCD if plugged into a Surge protection extension cable. Is it safe to operate in this fashion ?

  • EugenesDIYDen
    EugenesDIYDen Mar 13, 2011

    Not really because the surge protection cable is only masking the problem and there is a potential safety risk. If the RCD doesn't trip, you could have live mains voltages present on the body of the Nespresso.
    You may be aware of how an RCD trips but i'll explain anyway for the benefit of other people who might view this solution.
    Appliances which have extraneous metal parts which can be touched in normal use, i.e, such as a metal kettle, are fed by a cord with 3 cores: live(phase), neutral and earth. The electric current normally flows into the appliance from the live conductor and returns via neutral to the consumer unit (fuse box) where the RCD is situated. The earth core is just connected to the metal body of the appliance. Now if a fault occurs, for instance, a crack in the element in a kettle, water getting into the appliance or a wire in the appliance touching the metalwork, then electricity can flow out into the earth wire . In this situation not all of the current returns to the consumer unit via neutral. The RCD detects this imbalance and trips.
    If the plug is removable on the cord, open it and check it is wired properly and all the screws are secure.
    Try using the Nespresso at a different mains socket to eliminate the possibility of a fault at this outlet.
    If all fails, it would be wise to have the unit checked by a technician or your wiring checked by an electrician.
    Hope this helps!



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