ML370 g5 fan problem

[norseman197]

Recently I had to replace the motherboard on my ML370 g5 server.  After hooking everything back up I attempted to boot up the server. However I got a 1611 fan missing error for Fan 2 and Fan 3. When I removed the server cover and looked at what fans were actually spinning, only Fan 4 and Fan 6 were spinning until the server shut down. When the server restarted, Fans 4-6 spun up but not Fans 1-3.  I've looked at the connections to the fans and tried to make sure everything was seated and/or connected properly.  Is there something wrong with the fan cage assembly, Fans 1-3, or both?

[Suman_1978]

Hi,

ML370 G5 has 6 fans, fan 1, 2, 3 are primary, fan 4, 5, 6 is redundant.

If the fans are not spinning, fault could be with fans or cage or system board.

Try swapping the fans between the slots and you will see if the issue is with the slot or fans.

Refer to this support information.

Thank You!
I am a HP employee
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[norseman197]

I swapped the fans at each location, eg. 1 to 4, 2 to 5, and 3-6. The same thing happened when I attempted to boot up the ML370, the fans in positions 4-6 spun up but fans in positions 1-3 did not spin up.  So by system board, do you mean the motherboard or the power backplane board? I just replaced the motherboard, so unless that part is bad I"m betting its not that.