The machine makes gurgling or sputtering noises during brewing.

Safety: Hot water may sputter; keep hands clear of the spout.

• Refill tank: Ensure the water tank is at least half full and properly seated.
• Bleed air: Run a full tank of water (no capsules) through the machine, alternating hot and cold, to purge air.
• Clean injector and descale: Clear the injector needle and perform a descaling cycle.

Occasional gurgling is normal, but persistent sputtering after cleaning may indicate a developing blockage that needs professional attention.