Nuova Simonelli Musica blinking coffee dispensing & water level lights

Ive done general and thorough maintenance in the past when the machine showed the same behavior and some technician diagnosed there could be a problem with the retaining valve, since said valve wasn't available we just went to town on the valve which was indeed very much filled with calcium deposits. Upon reading some of the posts regarding the musica I'm thinking I'll try the water level probe .... That pretty much sums up my situation.