We’re sorry you’re experiencing the E4 error with your Baby Brezza. This usually happens when the floating magnet isn’t making proper contact with the sensor due to residue or buildup.\n\nHere are a few quick steps to try:\n1️⃣ Look inside the bottom of your machine.\n2️⃣ Next to the heating plate (top right corner), you’ll see a white ring with a small center tube — that’s the sensor.\n3️⃣ Using white vinegar and a scrubbing pad, gently clean the ring and tube to remove any residue.\n4️⃣ Make sure there’s no buildup from formula, milk, or limescale.\n5️⃣ Empty the wastewater tank if needed.\n6️⃣ Refill the clean water tank above the fill line.\n\nThis usually clears the error and gets your machine running again. ✨