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The Temp. Sensor #29 of my HP DL380G6 seems to give me a wrong number. It says that the temperature is more than 50C (Caution: 60C, Critical: 65C) while the actual value is 13C. And I think it may be the reason why all fans run madly at 78% of the full speed and make an extremely loud noise. Please tell me where the sensor is and how to solve this problem. The iLO is the latest version (v2.23) as well as the BIOS (2013.07.02). Thanks a lot.

Temp 1: Ambient Zone Ok 13C Caution: 41C; Critical:45C
Temp 2: CPU 1 Ok 40C Caution: 82C; Critical:83C
Temp 3: CPU 2 n/a n/a Caution: 82C; Critical:83C
Temp 4: Memory Zone n/a n/a Caution: 87C; Critical:92C
Temp 5: Memory Zone n/a n/a Caution: 87C; Critical:92C
Temp 6: Memory Zone n/a n/a Caution: 87C; Critical:92C
Temp 7: Memory Zone n/a n/a Caution: 87C; Critical:92C
Temp 8: Power Supply Zone Ok 19C Caution: 90C; Critical:95C
Temp 9: Power Supply Zone Ok 16C Caution: 65C; Critical:70C
Temp 10: I/O Board Zone Ok 19C Caution: 90C; Critical:95C
Temp 11: I/O Board Zone Ok 15C Caution: 70C; Critical:75C
Temp 12: I/O Board Zone Ok 20C Caution: 90C; Critical:95C
Temp 13: I/O Board Zone n/a n/a Caution: 70C; Critical:75C
Temp 14: I/O Board Zone n/a n/a Caution: 70C; Critical:75C
Temp 15: I/O Board Zone n/a n/a Caution: 70C; Critical:75C
Temp 16: I/O Board Zone n/a n/a Caution: 70C; Critical:75C
Temp 17: I/O Board Zone n/a n/a Caution: 70C; Critical:75C
Temp 18: I/O Board Zone n/a n/a Caution: 70C; Critical:75C
Temp 19: CPU Zone Ok 14C Caution: 70C; Critical:75C
Temp 20: CPU Zone Ok 16C Caution: 70C; Critical:75C
Temp 21: CPU Zone Ok 20C Caution: 80C; Critical:85C
Temp 22: CPU Zone Ok 16C Caution: 80C; Critical:85C
Temp 23: I/O Board Zone Ok 18C Caution: 77C; Critical:82C
Temp 24: Memory Zone Ok 15C Caution: 70C; Critical:75C
Temp 25: Memory Zone Ok 14C Caution: 70C; Critical:75C
Temp 26: Memory Zone Ok 15C Caution: 70C; Critical:75C
Temp 27: I/O Board Zone n/a n/a Caution: 70C; Critical:75C
Temp 28: I/O Board Zone n/a n/a Caution: 70C; Critical:75C
Temp 29: System Zone Ok 51C Caution: 60C; Critical:65C
Temp 30: I/O Board Zone Ok 38C Caution: 110C; Critical:115C

3 Answers 3

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Please see: HP DL380 G6: Where is Temperature Sensor 30 (I/O Board Zone)?

I happen to be sitting in front of a DL380 G6 with a bad temperature sensor right now. I've seen these sensors got bad and require a system board replacement. So it's a bit of a warranty issue.

In addition, the riser cards on these servers tend to have problems...

In your case, though, do you have any PCIe cards installed in the system? Depending on which cards are installed, the system fans will behave accordingly.

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I am having the same issue. I am relatively certain that sensor 29 indicates the heat on the northbridge chip which is immediately behind the processors.

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  • This would still indicate a fault, no? Did the problem develop suddenly?
    – ewwhite
    Nov 5, 2014 at 20:58
  • This is what happens on my system. sensor 29 starts at 43. It will slowly climb to 47c. When this happens the fans will ramp up to cool the system. At this point 1 or 2 things will occur: 1) The temp will fall below 46c which will allow the fans to ramp down -OR- 2) the temp will hover at 46c which will not allow the fans to ramp down. The mobo wants to keep the temp of that sensor below 115 and will ramp the fans to accomplish this. It did not happen suddenly to me, its just the way my server has been. In regards to the original poster, try replacing the thermal paste on the NB.
    – Kelly
    Nov 5, 2014 at 21:09
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Sensor 29 on HP DL380 servers reports temps on your HDDs, and for certain brands/models of drive they don't report a value that the server can correctly interpret, causing the server to think it's overheating, which causes the fans to slowly ramp up to max. Check this article for more info: http://dascomputerconsultants.com/HPCompaqServerDrives.htm

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