Rat Rig Community [Unofficial]•2w ago

Controller fan bogus.

Do you guys know how I can find out if my controller fan mosfet is dead? The fan always spins at idle, no matter what I do. Controlling it via enable and pwm or not doesn't change anything. Only the green led lights up. A few minutes ago it worked, but suddenly stopped working again.

9 Replies

JohetanOP•2w ago

It's a dead mosfet isn't it? ....

MDFPereira•2w ago

If the fan is correctly configured and always on, mosfet is gone

JohetanOP•2w ago

It's always idle, but it has something to do with the fan, not the mosfet. If I connect the fan 3 wire and just use a two wire config it works, if I use a 3 wire config it runs at idle. Strange, but configured as a two wire fan I can run it. EDIT: maybe I'll check if something's not wired correctly, but for now the 4 wire fan is running fine as a two wire fan.

MDFPereira•2w ago

What fans are you using and how do you have them configured?

JohetanOP•2w ago

@MDFPereira Using: https://www.arctic.de/F14-PWM/ACFAN00218A (Don't remember the exact config, Iam on mobile) But:

[controller_fan controller_fan]
pin: !PE8
cycle_time: 0.01
enable_pin: PD13

[controller_fan controller_fan]
pin: !PE8
cycle_time: 0.01
enable_pin: PD13

This config works now:

[controller_fan controller_fan]
pin: PD13
cycle_time: 0.01

[controller_fan controller_fan]
pin: PD13
cycle_time: 0.01

Cycle time did multiple timings.

ARCTIC GmbH

F14 PWM | 140 mm PWM-Lüfter | ARCTIC

ACFAN00218A | ARCTIC PWM Lüfter erlauben eine perfekte Regulierung durch PWM und somit eine maximale Kühlleistung bei minimalem Geräuschpegel | Kostenloser Versand in DE | Schnelle Abwicklung und Lieferung | ARCTIC Store

JohetanOP•2w ago

It's super strange, as Iam using a 12v parts cooling fan https://www.arctic.de/S4028-15K/ACFAN00264A And this one works fine on the ebb with a 12v enable pin from the Octopus

ARCTIC GmbH

Server Fan - S4028-15K | 40 mm 15k rpm Serverlüfter | ARCTIC

ACFAN00264A | Speziell für die Server Konstellation ausgelegt, um Ihr System im Dauerbetrieb inkl. hoher Drehzahlen zu kühlen | Kostenlose Lieferung in DE | Schnelle Abwicklung und Versand | ARCTIC Store

MDFPereira•7d ago

Did you try cycle time of 0.00004?

JohetanOP•7d ago

Yes. It's kinda weird. I'll check the wiring again, maybe i wired the tacho instead of pwm. Would that explain the behavior?

MDFPereira•7d ago

Just check wich wire is PWM and TACH. There are different color variations But maybe that would fry the fan…

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Controller fan bogus.

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