Why has my Rainbow lost suction?

Check where the airflow stops. If there’s no suction at the unit’s hose connection, contact your local Rainbow service technician. If suction is strong there, check the hose for an obstruction. If the hose is clear, check the Power Nozzle for a blockage. Switch off and unplug the Rainbow before inspecting or clearing anything, and follow your nozzle’s manual before removing its bottom plate.