Extruder Fan doesn't turn on automatically above 50 F

[alcore23]

Good afternoon,

I had to reinstall my firmware on my MKS SGEN L, which I have installed on and Ender 3, and after the update the extruder fan won't come ON automatically when the hotend is above 50 F.

I see that the Temperature menu now shows Fan 1 and Fan 2 as well, and I can manually turn the fans from this menu option. Fan 1 turns the part cooling fan ON, and Fan 2 turns the extruder fan ON.

I have not changed the wiring and this function worked fine on my older firmware, any recommendations?

[mks-viva]

Hi! Can you provide your config to me?

[alcore23]

Yes

Marlin.zip

[DanJunior78]

Which Marlin Firmware are you running. On mine with 2.0.6 it's working fine. Hotend Fan connected to the E1 heating output.

[alcore23]

I am using the latest on this repository, which I believe is 2.0.7

[Demitryk]

you need to set "#define E0_AUTO_FAN_PIN" to "FAN1_PIN"

…

On Wed, Oct 14, 2020 at 11:31 AM DanJunior78 ***@***.***> wrote: Which Marlin Firmware are you running. On mine with 2.0.6 it's working fine. Hotend Fan connected to the E1 heating output. — You are receiving this because you are subscribed to this thread. Reply to this email directly, view it on GitHub <#43 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AO5BYJAVX2VGO7GS2WA2NJTSKXG53ANCNFSM4SQDRS4A> .

[DanJunior78]

It's like dimetry wrote. Something in your config wrong.

[alcore23]

you need to set "#define E0_AUTO_FAN_PIN" to "FAN1_PIN"
…
On Wed, Oct 14, 2020 at 11:31 AM DanJunior78 @.***> wrote: Which Marlin Firmware are you running. On mine with 2.0.6 it's working fine. Hotend Fan connected to the E1 heating output. — You are receiving this because you are subscribed to this thread. Reply to this email directly, view it on GitHub <#43 (comment)>, or unsubscribe https://github.com/notifications/unsubscribe-auth/AO5BYJAVX2VGO7GS2WA2NJTSKXG53ANCNFSM4SQDRS4A .

This did the trick! Thank you very much all.

I was confused because the notes said that -1 would disable it all together so I had tried commenting out that line, but I did not try to assign a value.

I drop the value to 30 degrees as well.