hey man , new user from Canada here, had this problem for a couple days. did not see system hold in the manual, will look againBy any chance is HOLD flashing on the screen? If it is. you are in System Hold. If that is the case, press the HOLD/RESUME button for about 3 seconds to exit.
working as expected now. i thought an inappropriate key sequence may have locked things up and i might have to reset and lose all programming. many many thanks