Water flows very slowly; brew time is much longer than normal

Safety: Allow the unit to cool and unplug before handling.

• Deep descaling:
  • Use a dedicated descaling product suitable for Technivorm Moccamaster or a 1:1 white vinegar and water solution.
  • Fill the reservoir and run a full brew cycle.
  • Let the unit sit for 30 minutes with power off, then run another cycle with the same solution if heavy scale is suspected.
  • Rinse with 2–3 full reservoirs of fresh water.
• Clean outlet arm: Remove the outlet arm and soak it in hot water with a bit of dish soap. Use a thin brush to scrub inside, then rinse.
• Check brew basket: Ensure the brew basket drip-stop mechanism is not stuck partially closed. Clean and move it through its full range.
• Inspect silicone hoses (advanced): If flow is still slow, remove the base and inspect the silicone hoses for kinks or internal scale. Replace any hardened or clogged hoses.