Question about Keurig Elite B40 Coffee Maker

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Why are lights flashing but machine not working?

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I assume that you mean the machine acts normally until you try to brew.

You fill it with water and push the power button. The power light turns on. The heater light turns on for a while and the machine makes a boiling sound. Finally the heater light turns off. You open the mouth, insert a k-cup, close the mouth, and the cup size lights start flashing.

The machine appears all ready to brew.

You then push a flashing cup size button, and nothing happens.

If this is the case, the machine is probably unrepairable. There is a small chance that taking it all apart and re-seating the front panel connectors will help. If you can find another machine with a plumbing problem (but good electronics), you could take the circuit cards and front panel from it and put them into your machine.

Posted on May 06, 2014

  • Jared
    Jared May 07, 2014

    "Reseating" means to un-plug and the re-plug a cable or card. It can clean te contacts a bit and assure that all of the contact areas are touching.

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It can be a number of things. The buttons need cleaning, a bad solder joint or broken wire, a faulty IC on the control circuit board, the circuit board with the buttons could be loose and not making correct contact, etc.

Only way to know is take it apart. You will need a good flashlight and a long straight screwdriver to get to some of the clips. It is NOT an easy task. Look for tutorials on youtube, etc.

Posted on May 06, 2014

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