Electronics Forum | Tue Sep 05 11:09:09 EDT 2017 | emeto
The message might still be correct. Change the pneumatic cylinder on the nozzle changer - I have seen these to go bad.
Electronics Forum | Fri Sep 08 22:37:30 EDT 2017 | ttheis
If you have two changers and only one head, make sure there is only one open port (one changer should be filled up and the other should have one open hole.) The head should be full of nozzles as well. As you mentioned go into the diagnostics and act