Coffee has a burnt or bitter taste even with fresh coffee.

Safety first: Unplug before cleaning.

Steps:

• Adjust usage: Do not leave coffee on the warming plate for extended periods; transfer to a thermal carafe if needed.
• Check coffee grind and dose: Use medium grind for filter machines and follow Tefal's recommended coffee-to-water ratio.
• Clean brew components: Thoroughly clean the filter basket, shower screen, and carafe with warm soapy water to remove old coffee oils.
• Descale: Run a descaling cycle to restore proper temperature control.