The red one is for the internal circulation fan. FAN1 and FAN2 are actually the same, so you can plug it into either one. There is a great thread on these controllers here:
The tech article really centers around replacing the electrolytic capacitors because they seem to be *very* poor quality. In post #38 there is a link to an excellent thread by another person, but it is all in Spanish:
To cut to the chase, however, the author posts two pages of schematics for the board (mind you, there are a few variations, but the general circuit is pretty similar. There isn’t a whole lot to the concept. The links to the schematics are here:
The red one is for the internal circulation fan. The other two, I believe, are actually the same (for a two heatsink system). But if you only have one fan, I believe it is hooked up to the top (nearest the corner) connector.
Someplace I have a schematic. My external fan died and I wanted to put the schematic with the unit. Now I can’t find the darned thing. If I could, I’d be able to answer you definitively, but I am almost positive that you can put the heatsink fan on either and you’ll be fine.
Sobald er das hat, wird er in der Lage sein, eine Grafik zu seiner im Laufe der Zeit erlangten Reputation zu sehen.
Hier ist eine Vorschau, wie die Grafik aussehen wird:
Noch keine Reputation erlangt.