Why are my fans not turning on

john.mullen@switch.ca
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Why are my fans not turning on

Tue Feb 12, 2019 7:59 pm

I have an WS-12 400 AC, and the cpu is at 74C but the fans are not turning on.

Board at 37C
CPU at 75C
PHY at 65C

Can I turn the fans on via console?
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sirhc
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Re: Why are my fans not turning on

Tue Feb 12, 2019 10:17 pm

john.mullen@switch.ca wrote:I have an WS-12 400 AC, and the cpu is at 74C but the fans are not turning on.

Board at 37C
CPU at 75C
PHY at 65C

Can I turn the fans on via console?


Upgrade to v1.5.1 and put another screen grab of the FULL Device/Status TAB

But the fans do not turn on until board temp is 40C for v1.5.0 and older and 45C for version v1.5.1
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john.mullen@switch.ca
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Re: Why are my fans not turning on

Wed Feb 13, 2019 12:39 pm

Thanks, is there a way to turn the fans on via console?

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Stephen
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Re: Why are my fans not turning on

Wed Feb 13, 2019 2:49 pm

Doing so could result in damage to the switch. It's really best to wait for the auto fan control to do it's thing. Like sirhc said it will trigger when board temp reaches 45C if you are on the latest firmware.

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Re: Why are my fans not turning on

Wed Feb 13, 2019 3:35 pm

I'm waiting for it to pack it in. I should mention it is -35C where this switch is right now.
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sirhc
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Re: Why are my fans not turning on

Wed Feb 13, 2019 4:31 pm

Then that is why your fan is not running.

It will turn on when needed and if it fails it will log an error and if you have SMTP setup send you an email alert.
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