Proliant ML570T01US 1611 Auxiliary Power Supply Fan #3 Failure

[Paul Rose_2]

I'm have a problem determining which fan is failed. The documentation makes no mention of the word "auxiliary". I've checked all three power supply fans (450w redundant 157793-001)and all lights green, all fans spinning. I've also quickly looked at the system and i/o cage fans, all look fine. I tried moving the power supplies between slots (all three moved to a different position) and it did not change the error.
Suggestions?

Am I correct in assuming the system sees a power supply fan problem even though it looks fine?

[Oleg Koroz]

There is: one fan in each Power Supply, 3 fans lower in the Cage and Max 4 fans for CPU and I/O.

Slide I/O cage out and see insight
You can swap 1 with 3 at every location, Clear IML, clear NVRAM, Update BIOS - see if Problem still exists.

I would expect Power Supply fan going bad, backplane communication or cached error

[Terry Hutchings · Accepted solution]

If there is ever a fan failure in the power supply, it would be described as a power supply failure. If you get this error it's describing the fans behind the drive cages.

I would slide the I/O board out and look down in behind the drive cages, then verify which one is failed.

[Paul Rose_2]

Thanks Kov & Terry. I'll be going back onsite tomorrow (TUES) and will investigate that further.
Terry, what I find contradictory or confusing is why would it refer to an I/O drive cage fan failure as an auxillary power supply fan failure and not specify it as an I/O fan?

[Paul Rose_2]

Correcion to my previous reply, I meant drive cage fan not I/O fan.

[Paul Rose_2]

Sorry for the delay in responding. Terry you were right on the button. We went in early this morning and pulled the drive cage, the 3rd or lowest fan (p/n 161657-001 - 92mm Hot-Plug redundant drive fan) was the culprit, replaced and life is good again.

I find it odd the error code thrown up was listed as "Auxilary Power Supply Fan Failure" rather than a specific "drive fan failure" - it just made it confusing.

Cheers.

[Terry Hutchings]

I would definitely agree with it making things confusing.