Coffee maker powers on but will not start brewing when the brew button is pressed.

Safety first: Unplug the unit before manipulating the lid, basket, or carafe switches.

• Verify setup: Ensure the water reservoir is filled, the brew basket is installed correctly, the lid is fully closed, and the carafe is seated on the warming plate.
• Check for lock icons: Some models show a carafe or lid icon if not properly positioned. Adjust until any warning icons disappear.
• Try manual mode: If your Calphalon model has multiple brew modes (e.g., regular, strong, program), try a different mode or disable any timer settings.
• Clean control panel: Wipe the touchpad with a slightly damp cloth and dry thoroughly. Moisture or residue can interfere with capacitive buttons.
• Power cycle: Unplug for 5 minutes, then plug back in and attempt to start a brew.
• If still unresponsive: The brew button switch or control board may be defective and will need professional diagnosis and replacement.