Vacuum fixes by symptom

These fixes apply to several models. Each one links to the model guides with the exact part numbers.

• Pulsing or cutting outThe motor surges on and off, or stops mid-room. Almost always a blockage or a dirty filter.
• Losing suctionWeak or no suction. Check the bin, filters and hose before anything else.
• Brush bar not spinningSuction works but the roller doesn't turn. Usually hair, string or a jam in the head.
• Replace the battery safelyWhich packs click in, which ones screw in, the genuine part numbers, and the fakes to avoid.
• Wash the filterWhich filters wash, which water to use, how long they dry, and which ones you never get wet.
• Roomba not chargingNo lights or a charging error. iRobot's steps, in order.