Display shows NO WATER FLOW or the unit beeps and stops shortly after starting a brew cycle.

Safety first: Unplug the coffee maker and allow it to cool before removing the reservoir or opening any covers.

• 1. Check reservoir outlet
  • Remove the reservoir and inspect the outlet valve or screen for debris.
  • Rinse under running water and clean with a soft brush.
• 2. Descale the system
  • Fill the reservoir with a 1:1 vinegar and water solution.
  • Start a brew cycle and, if flow begins, pause halfway for 15–20 minutes to dissolve scale.
  • Resume and complete the cycle, then run 2–3 clean water cycles.
• 3. Clear air lock
  • With the unit unplugged and cool, remove the reservoir and gently tap the base of the machine to dislodge air bubbles.
  • Refill and reseat the reservoir firmly.
• 4. Inspect pump (advanced)
  • Unplug and remove the bottom cover.
  • Locate the vibration pump and check for kinked silicone hoses or visible leaks.
  • Ensure hose clamps are tight and hoses are not collapsed.
• 5. Replace pump if necessary
  • If the pump hums but does not move water even after descaling, it may be worn or blocked internally and should be replaced with a compatible Sunbeam pump assembly.