Question about Wega Mininova EPU Espresso Machine

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Wega coffee machine

Hi I have just installed a wega coffee machine in a mobile coffee cart. The machine has worked properly for a couple of hours and then fills up automatically. We have removed and cleaned the level sensor and this helps but only briefly. The machine is on a private loand and has been sitting unused for a good year possibly longer.

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  • Ernest R
    Ernest R May 11, 2010

    Does it overfill or not fill? Check the inlet solenoid



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Are you on Well water or distilled water?
If no then check the inlet solenoid valve, on the model of your machine it would be an electrical box with 2 pipe fittings on it, usually on the side of the machine.
Does the problem occur when the machine is turned off?
If yes then there is a leak either on the manual fill, or the exchanger in the boiler(happens when a machine freezes), or the inlet solenoid is leaking.

Does the pump run when the boiler is filling?
If the pump runs then the probe is calling for water and it needs to be replaced or cleaned with a wire brush, also check the electrical connector on the probe that could be damaged. If the problem is still happening then the auto level box is damaged.

Posted on May 16, 2009


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