EG4 6500EX cooling fans

[JWLV]

The EG4 6500EX has three fans. Fan 1 is 80mm. Fan 2 and Fan 3 are both 92mm. I assume that Fan 1 is for the Inverter, Fan 2 and Fan 3 are for the two MPPTs. If my assumptions are correct, does anyone know which MPPT corresponds to which Fan? That is, does MPPT1 go to Fan 2 and MPPT2 go to Fan 3? Or is it the other way around?

Or is my assumption wrong because I think Fan 1 is louder mid day when PV power is at its highest, so that would mean both MPPTs are cooled by Fan 1.

 

[aliarifat794]

Given that Fan 1 is louder midday, it is plausible that it is indeed handling the main inverter's cooling, especially since the inverter workload increases with higher power processing during peak PV hours.