The best answer for this (old) discussion mentions that the switch was replaced by HP(E) support. I would reach out to support and ask if it is worth/possible to replace (RMA) the switch.
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Herman Robers
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If you have urgent issues, always contact your Aruba partner, distributor, or Aruba TAC Support. Check
https://www.arubanetworks.com/support-services/contact-support/ for how to contact Aruba TAC. Any opinions expressed here are solely my own and not necessarily that of Hewlett Packard Enterprise or Aruba Networks.
In case your problem is solved, please invest the time to post a follow-up with the information on how you solved it. Others can benefit from that.
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Original Message:
Sent: Sep 02, 2022 02:03 AM
From: Shivam Ojha
Subject: Aruba 2540 Fan Speed Issue
Hi ,
I am getting same error on show system fans. and switch is making too much noise.
Please suggest what should I do?
Original Message:
Sent: Sep 11, 2019 10:12 AM
From: Davide Poletto
Subject: Aruba 2540 Fan Speed Issue
Can you report the output of the show system fan command?
It should show you something similar to:
aruba2540-jl355a# show system fans
Fan Information
Num | State | Failures | Location
-------+-------------+----------+----------
Fan-1 | Fan OK | 0 | Chassis
0 / 1 Fans in Failure State
0 / 1 Fans have been in Failure State
Thanks.