Returned today to install parts. System had been heating properly since my last trip. Replaced control board kit. Set DIP switches. Installed new part number list on burner cover. Ignition system now a 120v ignition system. Ran dual fuel system on gas furnace only, heat, and cool modes. Verified proper operation. Discussed dep999 with Mr. Lloyd. All safety circuits test ok on the gas furnace. PO parts not loaded into the ticket to mark as installed.