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Forum Discussion
sebcbien31
Jun 12, 2022Aspirant
Readynas ultra 6 fan replacement
Hello, Got a readynas ultra6. Fan is blowing a very little. I heard that noctua fan is a good choice as replacement Do you have a reference which can be ordered thru amazon ? Thanks !
StephenB
Jun 12, 2022Guru - Experienced User
- sebcbien31Jun 17, 2022AspirantThanks stephen.
I replaced the fan with Noctua NF-A12x25 FLX, https://amzn.eu/d/9BAIVNq
Temp is now 72°C instead of 80-ish °C
But when when system fall asleep after few hours fan stop rotating and system temperature rises critically
How can I prevent the system to stop the fan in such condition ?- StephenBJun 17, 2022Guru - Experienced User
sebcbien31 wrote:
Thanks stephen.
I replaced the fan with Noctua NF-A12x25 FLX, https://amzn.eu/d/9BAIVNq
Temp is now 72°C instead of 80-ish °C
But when when system fall asleep after few hours fan stop rotating and system temperature rises critically
How can I prevent the system to stop the fan in such condition ?Not sure what's going on with that - perhaps Sandshark will offer some ideas.
Is the system cooling set to "cool" Or one of the other two settings?
- SandsharkJun 17, 2022Sensei - Experienced User
The problem with replacing the fan with another brand is that the "stall speed" may be higher, which sounds like your problem. Your fan's minimum speed is higher than the stock one. The fan comes on faster at power-on, and then gets trimmed to the necessary speed to maintain the desired temperature. But the OS is trying to trim your fan to something below it's minimum.
The minimum is set in /etc/sensors.d/system.conf. Note that that is a symbolic link to /etc/frontview/sensors/ULTRA66.conf (in your case for an Ultra6). While it seemed to have no effect when I tried it some time ago, other have had success. So I suspect that there is a limit and my trial of 2000 (to insure I could see a difference) was too large. To prevent OS updates from overwriting it, I suggest you replace the link with a real file and make that file read-only once you verify it has worked.
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