Cuisinart Brew Start Interlock Failure

Unit powers on but will not start brewing when the BREW button is pressed.

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Possible Causes

Brew basket not fully seated, Carafe not in place triggering drip-stop interlock, Faulty brew start switch or button, Control board not registering input

How to Fix / Troubleshooting

Safety first: Ensure the unit is cool before adjusting the brew basket or carafe.

  • Check basket and carafe: Remove and reseat the filter basket and ensure the carafe is fully pushed back on the warming plate.
  • Verify water level: Make sure the reservoir has enough water; some models will not start if the level is too low.
  • Try manual start: Press and hold the BREW or START button for a few seconds in case your model requires a long press.
  • Clean the button area: Wipe around the BREW button to remove any sticky residue that might prevent proper contact.
  • Persistent failure: If the unit powers on but never responds to the BREW command, the keypad or control board may be defective and require replacement.
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Repair Difficulty

Easy 2/5

Required Part

Brew Start Button / Keypad
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