cant get my 4028 to work. I have even bought a new one and still it does nothing.

I wired the blue to ground and the red and black to the upper fan header. set the correct voltage.
Included my printer.cfg and picture of my wiring.
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14 Replies
Demdor
DemdorOP16mo ago
i also tried [fan] pin: !PA8 cycle_time: 0.01 enable_pin: PA3 and then moving the ground wire to heater pa3. but there is no life what so ever...
blacksmithforlife
i see the picture but not the printer.cfg
Demdor
DemdorOP16mo ago
blacksmithforlife
if you disconnect the pwm wire, does it spin up to 100%?
Demdor
DemdorOP16mo ago
the fan does nothing when the pwm wire is disconnected
blacksmithforlife
then most likely it is dead it should run 100%
Demdor
DemdorOP16mo ago
[fan] pin: !fan_part_cooling_pin cycle_time: 0.01 enable_pin: PA3 but this config is fine right ?
blacksmithforlife
not according to how you have it wired up
Demdor
DemdorOP16mo ago
Oh no i chhanged the ground and plugged it into the heater pa3
Demdor
DemdorOP16mo ago
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Demdor
DemdorOP16mo ago
i bought another 4028 but the wires are all black so i dont know if the wiring is the saem
Demdor
DemdorOP16mo ago
thanks i will check this out

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