Avinash Rupert
I got blue because coming from NF to the main pcb I saw 1) white being neutral and 2)blue being the hot. I figured from the main pcb to the heat 1) red would have matched up as the neutral and 2) blue would have been feed to the heater as the hot but now that you enhanced the diagram im noticing the black coming from below. Honestly I’m just being confused as to which direction the heater is getting powered from whether it was off the main pcb or from below. My next choice would be black coming up to terminal 3 by itself.