Question about Bunn Margarita Machine Ultra 2 Slush Granita Maker

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My bunn slushy machine has just decided to go crazy .........a message keeps coming up ...filter cleaned. another number comes up ULTRO40166 and ULTRO999994.... AND none of the press buttons work . I cannot turn it off... totally no buttons work I have to turn it off by unpluging the power. please please help.

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  • cofe2u Apr 02, 2011

    Hello Ginko.
    thanks very much for your help.
    the electronic board was the problem and has been replaced .
    thankyou for your help Heather



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That means that either the filter is defective, or that there is an electronic problem. If the machine has been programmed in Clean Lockout you may get the same message, but in that case you can access fully the menu to reset machine or to remove Clean Lockout settings (by choosing '-' in clean menu).

Please do the following:

  • Try disconnecting power and leave it off for one hour or so. This will reset the electronics and can fix minor problems.
  • If you have a spare filter, try replacing the Filter, otherwise call Bunn first (see below).
  • If the machine is responsive (display and button work) go to programming mode, and do a reset. Reset is usually called PM in Bunn machines menu (PM=preventive maintenance).
  • If all that does not work, call Bunn (see below). They will guide you through a master reset and following troubleshooting.
Here Bunn website. Choose your location/business and find contact.



Posted on Mar 26, 2011

  • Ginko
    Ginko Apr 03, 2011


    You are welcome.

    All the best.




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