All SPX makes is junk,expecially Robinair.My father had problems with it since day one,SPX would not do anything about it and treated him like crap.My father talks bad about SPX since he had problems with his Robinair A/C machine.The best scantool is made by Vetrnonix bought by Bosch.Their reps come out if you have a computer related problem and will answer it on the phone right away and Vetronix is ahead of everyone.