Buderus G115 oil fired heating system,zone 2 not working?

my BUDERUS G115 oil fired system is new,9months.It`s a 2 zone.Upper zone, turn on thermostat,burner fires up baseboards get hot.However, lower zone,turn up thermostat,I can hear the burner go through the purge cycle,but does not fire up.There is power to the zone and the circulator operates, but that zone don`t get ignition.Pressed reset,did not help.THANKS for INFO.