Fast blinking red light; the machine will not start brewing.

Safety first: Unplug before moving the machine or opening covers.

De-airing and basic checks:

• Fill the water tank completely and ensure it is firmly seated.
• Run several large-cup cycles without a capsule to purge air from the system.
• Tap the side of the machine gently while the pump is running to help release trapped air.

If no improvement:

• Open the housing and inspect the inlet hose and filter for blockages.
• Test the pump for vibration and electrical continuity; replace if not operating.