Fault 10 on a Miele coffee maker typically indicates an issue with the water supply system. Here's a step-by-step guide to help you troubleshoot and fix the problem: 1. Check Water Supply: Ensure that the water reservoir or water source is properly connected and filled with water. Make sure there are no kinks in the water supply hose. 2. Water Filter: If your coffee maker has a water filter, check if it's clogged or needs replacement. A blocked filter can restrict water flow. Replace the filter if necessary. 3. Water Inlet Valve: The water inlet valve might be malfunctioning, preventing water from entering the coffee maker. Check if the valve is blocked, and if you have the expertise, you can attempt to clean or replace it. Otherwise, contact Miele's customer support or a professional technician. 4. Water Pump: The water pump could be faulty, preventing water from being drawn into the coffee maker. Listen for any unusual sounds when the coffee maker is supposed to be drawing water. If you suspect the pump is malfunctioning again, it's recommended to contact Miele's customer support or a technician for assistance. 5. Airlock: Sometimes, air can get trapped in the water line, causing a blockage. Try priming the water line by filling the water reservoir, turning on the coffee maker, and allowing it to run without coffee grounds. This can help push out any air bubbles. 6. Descale: Over time, mineral deposits can accumulate and clog the water pathways. Perform a descaling process following your coffee maker's user manual. Descaling solutions can help remove mineral buildup and improve water flow. 7. Electrical Issues: Fault 10 could also be triggered by electrical problems. Check if the power cord and connections are intact. If you're not comfortable with electronics, it's best to seek professional help. 8. Reset: Sometimes, a simple reset can resolve minor glitches. Turn off the coffee maker, unplug it from the power source, wait for a few minutes, and then plug it back in. Turn it on and check if the fault is cleared. 9. User Manual: Consult your coffee maker's user manual for specific troubleshooting steps related to Fault 10. The manual should provide detailed instructions tailored to your model. If none of these steps resolve the issue and the Fault 10 message persists, it's strongly recommended to contact Miele's customer support or a qualified technician. Attempting complex repairs without the necessary expertise could potentially cause more harm to your coffee maker.