RGB DUAL EXTERNAL FAN PROBLEM

[butoia]

Hi to all, i've received my rgb dual and i'm testing it on my raspberry pi 4 + 3A 5v psu.
I've noticed a problem on the headers for external fans. If i connect my fans on gnd and 3.3 or 5v the fans not move. I've tried to check with a tester and the are really low voltage on those headers. (0.6v on 3.3v and 0v on 5v) Anyone can help me about this issue?
Thanks.

[zetof]

hi,
the fan start only if needed (if temperature > ~60°C) and stops if needed
it is not real 3.3v and 5v pins
zetof

[butoia]

@zetof

Have you a scheme to connect a standard fan (2 wires) i also have a 3 wires fan pwm, is possible use it?

Thanks in advance!!