Coffee maker brews extremely slowly; a full pot takes much longer than normal.

Safety first: Unplug the unit and let it cool before cleaning.

• Descale thoroughly: Fill the reservoir with a manufacturer-approved descaling solution mixed with water. Run a full descaling cycle as described in the Wolf Gourmet manual, then run 2–3 full reservoirs of fresh water to rinse.
• Clean brew basket: Remove the brew basket and wash it with warm, soapy water. Pay special attention to the outlet hole at the bottom; clear any trapped grounds.
• Check water filter: If your model uses a reservoir filter cartridge, replace it or temporarily remove it and test the brew speed without it.
• Repeat if needed: In areas with very hard water, you may need to repeat the descaling process to fully restore flow.
• If still slow: Internal tubing or the heating block may be heavily scaled or partially blocked and may require professional disassembly and cleaning or replacement.