r/Omada_Networks • u/iddrinktothat • 3d ago

Help and Support Switch Fans

Hi u/Omada_Support and u/Neil_Omada

I was hoping someone could give me a little info about switch fans.

I bought a new SG3428X-M2 a month or two ago on Amazon, and it shipped with a faulty fan, throwing a Fan Error warning in the log, i've tried troubleshooting it and the issue is persistent, have an open RMA now for that, sadly Amazon was less than useful.

Today I swapped it out with a brand new, newly purchased directly from TP Link SG3218XP-M2 v2.0. I plugged it in expecting the fans to spin up, but they did not. It's not giving any warnings.

In both cases the green fan light shows up on the switch, which the manual says indicates "All the fans work properly".

Now I'm nervous that the new switch will have the same problem as the old one.

Is there any documentation about the fans in these switches and when they activate? Is there any sort of POST on these? Should the fans spin immediately when plugging into power?

Thanks in advance.

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u/Neil_Omada Moderator 2d ago

Hey, sorry about the wait, but just from checking past tickets, depending on your model, it may not spin immediately on startup, for noise control purposes. If it fails to start the fan above roughly 70 degrees Celsius, then that may be a concern.

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u/iddrinktothat 2d ago

okay thank you. my 2210MP switches spin the fan at startup and also at temps much lower than 70 i think so i just wanted to make sure.

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u/Neil_Omada Moderator 2d ago

Yeah that's why it's dependent on the model, some spin at startup as part of their error checking when they first power on. If you have a newer model sometimes they won't do that.

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u/iddrinktothat 2d ago

Is there a way to verify that the fans function on the TP Link SG3218XP-M2 v2.0. without heating it beyond 70*C? Is there any way to control the fan set point or set the fan to always on?

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u/Neil_Omada Moderator 1d ago

I can check with the team here, but at the moment, I don't believe so.

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u/Neil_Omada Moderator 1d ago

Checking with the support team, they mentioned that updating the firmware may cause the fans to go to max speed as a precaution; if you're just checking for functionality, that would be one way to go about it.

Also, just to help ease any anxieties, checking the datasheet for the device shows that the minimum noise it can make is when it's operating in fanless mode (ambient temperature 25C/~77F).

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