X10SLM-F-O - 4pin case fan spins up and down - "Lower Critical"

[bonbongo]

Replaced the top fan in my PC-V354 case with a noctua 140mm fan to make it a bit quieter.

Well, now that its installed, the CPU fan (FAN4) and the top fan (FAN3) both spin up and down repeatedly. FAN3 reports "Lower Critical 400RPM", then fan3/fan4 spin up to max, and alert clears. Only to repeat 5 seconds later. Continues in a cycle.

Can of course run the fans at full speed and the problem goes away.

Anyone seen 4pin headers with low RPM have this issue? Opened a case w/ SM to see if the rpm is just too low or something and it detects a critial situation.

Tried FANA (based on System temp, not CPU temp) and same deal.

SM X10SLM-F-O
i3-4160
Intel x520SR
16gb Crucial
4x WD 4TB Red, raidz2
PC-V354
CX-430M 430W

 

[Bidule0hm]

See this thread: https://forums.freenas.org/index.ph...or-thresholds-with-ipmi-using-ipmitool.23571/ ;)

 

[Ericloewe]

Replaced the top fan in my PC-V354 case with a noctua 140mm fan to make it a bit quieter.

Well, now that its installed, the CPU fan (FAN4) and the top fan (FAN3) both spin up and down repeatedly. FAN3 reports "Lower Critical 400RPM", then fan3/fan4 spin up to max, and alert clears. Only to repeat 5 seconds later. Continues in a cycle.

Can of course run the fans at full speed and the problem goes away.

Anyone seen 4pin headers with low RPM have this issue? Opened a case w/ SM to see if the rpm is just too low or something and it detects a critial situation.

Tried FANA (based on System temp, not CPU temp) and same deal.

SM X10SLM-F-O
i3-4160
Intel x520SR
16gb Crucial
4x WD 4TB Red, raidz2
PC-V354
CX-430M 430W

Work's been done for you. Just follow the guide BiduleOhm linked. It's the easiest of the two options. I only documented the ipmiutil option because I didn't realize ipmitool was included in FreeNAS. :p

 

[bonbongo]

Sweet silence! Thanks guys. Should be a little less drama when replacing the front with pwm models now too.

 

[Ericloewe]

Sweet silence! Thanks guys. Should be a little less drama when replacing the front with pwm models now too.

I know the feeling. My Noctuas constantly spinning up and down made for a very headache-inducing couple of days.

 

[bonbongo]

Sort of a side note, since you have experience with this - leaving the fan in FANA and instead it was just going full blast. Moved to FAN3, changed the thresh there and it was better.

Aside from system/cpu temp, I'm not clear on any differences with A vs # fans. Any clue?

 

[Ericloewe]

The X10 FAQ (link in my sig) links to a detailed explanation by GrumpyBear, which should clear things up.

 

[bonbongo]

Good info, thanks. Sounds like all my issues have already been covered!