Multiple spark and multiple sense igniter assembly and system

An apparatus, comprising:

• a first carrier tube having a first input end and a first output end;
• a second carrier tube having a second input end and a second output end and disposed substantially parallel to the first carrier tube;
• a cross tube coupled to the first carrier tube and the second carrier tube and disposed substantially perpendicularly between the first carrier tube and the second carrier tube;
• a plurality of burner holes disposed along the first carrier tube, the second carrier tube, and the cross tube;
• a first flame sensor disposed at the first input end of the first carrier tube;
• a second flame sensor disposed at the first output end of the first carrier tube;
• a third flame sensor disposed at the second output end of the second carrier tube;
• a fourth flame sensor disposed at the second input end of the second carrier tube;
• and
• a first igniter assembly coupled to the first carrier tube.