Dyson Ball M. Fl. Upright , Ball area heats up after using once.

Used the extension hose to dust cabinets and along wall. After one use the ball area heats up. Let it rest, checked ball and canister filter which appeared clean. good suction from wand , still heats up after about 5 to 10 minutes. It is new , should the ball filter area heat up. Where else do I check for a blockage. Is it a defect???