Cisco ws-3750x-48p fan stuck on high

[mheddy439]

Hello, 

So I have one Cisco ws-3750x-48p that one of the fans is just stuck on full load the whole time, It seems like its just that fan port on the switch itself, I can swap out fans and it does it for each one, here are the logs from env all, power and fan.

Also on the fans themselves the lights are solid green.

I have tried to do a search and cannot come up with anything, so any help would be highly appreciated.

Thanks.

Switch#show env all
FAN 1 is OK
FAN 2 is OK
FAN PS-1 is OK
FAN PS-2 is NOT PRESENT
SYSTEM TEMPERATURE is OK
System Temperature Value: 20 Degree Celsius
System Temperature State: GREEN
Yellow Threshold : 46 Degree Celsius
Red Threshold : 60 Degree Celsius
SW PID Serial# Status Sys Pwr PoE Pwr Watts
-- ------------------ ---------- --------------- ------- ------- -----
1A C3KX-PWR-715WAC DTN1652K0ZJ OK Good Good 715/0
1B Not Present

SW Status RPS Name RPS Serial# RPS Port#
-- ------------- ---------------- ----------- ---------
1 Not Present <>

Switch#show env power
SW PID Serial# Status Sys Pwr PoE Pwr Watts
-- ------------------ ---------- --------------- ------- ------- -----
1A C3KX-PWR-715WAC DTN1652K0ZJ OK Good Good 715/0
1B Not Present

Switch#show env fan
FAN 1 is OK
FAN 2 is OK
FAN PS-1 is OK
FAN PS-2 is NOT PRESENT

[Mark Malone]

Hi
fans go most likely on way out ive replaced a few over the years , you can open it up and swap it , usually when they get like that there on the way out and will eventually break , there's no config change or software change that will help a faulty fan

doc showing how to replace it
https://support.hpe.com/hpsc/doc/public/display?docId=mmr_kc-0116229

[mheddy439]

Thanks for the quick reply, but I have tried several different fan units from different 3750 switches and they all do the same thing in that same spot. 

[Mark Malone]

Maybe theres a fault on the board then , open a TAC case they may advise a replacement unit if several working fans have already been tried and the issue exists only on that connection , i dont think changing software is going to give you anything with an issue like this it seems hardware related