Brush is not turning

You may not have power to the power head. Check the plug at the neck of the power head, also the wand connections to make sure they aren't burnt. Most of these powerheads also have a circuit breaker on the top of it, press it to see if it will re-set. At the end of the hose handle, there is a female plug where the wand plugs into, push it ans see if it will move inward or not. If it does, then it has broken loose inside of the handle and isn't allowing a connection to the wand. The switch on the hose handle may be bad. The power head motor could be bad. These are the most common problems when the power head won't run.