A:Answer Blinking wash dry lights means the Brushes are not turning. The brushes will need to be removed.
After you do make sure everything is clean, twist the brush noobs to make sure they will turn. They will not turn wile the cleaner handle is up wile on. You will need to lower the handle into working positions. Than check the noobs inside that hold the brushes. They should be turning, turn off the cleaner and place the brushes back into position. Along with the cover with any luck your lights will now work.