I just bought an r2 pro from Sweet Maria’s and having a weird issue with the pro cooling tray. It doesn’t always work. I tested with an another cooling tray and same issue. I then went into the control board and checked all the connections and nothing seemed out of place or disconnected. I then put everything back and reflashed the latest firmware and everything seems to work. I’m going to run another roast tomorrow to see if it was a connection that was loose or maybe a firmware issue. Sorry for the long rant. Anyone having similar issues? Thanks.