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- HP ProLiant DL160 G6 PWM not regulating the fans

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09-23-2017 02:50 AM - edited 09-23-2017 02:58 AM
Hello!
I own a HP ProLiant DL160 G6 Server. Quite a while ago i replaced the 12 very noisy internal fans with 5 92mm and 2 120mm fans. I tricked the fan speed controll (the pc fans turn a lot slower than the 40mm fans) by unplugging the PWN signal of one of the fans and with jumpers i put the now fast enough RPM signal of that fan to all the other Signal Inputs on the Mainboard. Everything worked fine, I didn´t have any errors or warnings, the PWM was controlling the fans, so nothing unusual.
A few days ago I added a WiFi PCI card to the Server. Now suddenly the PWM isn´t regulating the fan speeds anymore. I still don´t have any warnings or errors, the fan speed signals are all fine and the temperatures are low enough.
Usually during post the fans run at a certain speed. in case of a warning the speed increases a bit and in case of a successful post the speed decreases a lot. but nowit does neither of these things. it has constantly the same speed as during post.
I can´t find a solution for this problem. Am I missing something?
Thank you
09-23-2017 06:12 AM
Hi:
You may also want to post your question on the HPE Community Support Forum -- DL Servers section...
https://community.hpe.com/t5/ProLiant-Servers-ML-DL-SL/bd-p/itrc-264#.WcZPmuRe69I