Baxi luna 3 comfort 310fi heat call 00e to 03e

Baxi Luna 3 Comfort 310 fi combi boiler going through a call for heat. At end of call, panel changes to blinking 00e for 2-3 seconds (at 3:06), then blinking 03e appears for several seconds (3:08-3:28), next blinking 00e reappears for 2 seconds (3:28-3:31), and finally panel changes back to normal display info/content (starting at 3:31).