My BP-100 is not smart, so no app. I know from the instruction manual to connect PROG pin to ground. But then it says the display will step through the shutdown and restart voltages. It is not explicit that it will first show an existing setting if one exists. My BP was installed by the trade but I don't know if it was left at default settings (if that option exists) or programmed. I'm keen to know existing settings and don't want to delete them. Is there a way to proceed with the PROG connection that ensures this? Thanks for your interest and help.