Moldy or musty smell from the coffee maker or carafe.

Safety first: Unplug before cleaning.

Steps:

• Deep clean: Wash the carafe, lid, filter basket, and drip tray with hot soapy water. Rinse thoroughly.
• Tank cleaning: Clean the water tank with a mixture of water and white vinegar (1:1), let sit for 15 minutes, then scrub and rinse well.
• Run cleaning cycles: Run 1–2 cycles with a vinegar solution (follow manual guidelines) and then several cycles with fresh water.
• Drying: Leave the tank and carafe open to air dry when not in use to prevent mold growth.