FAN Issue with Z370 Pro4 on CHA_FAN 1 and 3
Printed From: ASRock.com
Category: Technical Support
Forum Name: Intel Motherboards
Forum Description: Question about ASRock Intel Motherboards
URL: https://forum.asrock.com/forum_posts.asp?TID=8732
Printed Date: 31 Jan 2025 at 11:55pm
Software Version: Web Wiz Forums 12.04 - http://www.webwizforums.com
Topic: FAN Issue with Z370 Pro4 on CHA_FAN 1 and 3
Posted By: PaperPlanePilot
Subject: FAN Issue with Z370 Pro4 on CHA_FAN 1 and 3
Date Posted: 19 May 2018 at 6:29pm
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Hy, i have a Problem with my Z370 Pro4 The Chassis FAN 1 and 3 only run at full Speed. I tried this with different types of fans with the same result. After i run the FAN Setup in the UEFI an the A Tuning Tool only CHA_FAN_2 (and CPU FAN) has a usable result. CHA_Fan_2 (an 3PIN 900RPM FAN) is OK and Looks like this: 100% 807 RPM 90% 889 RPM 80% 832 RPM 70% 754 RPM 60% 666 RPM :) 50% 571 RPM 40% 474 RPM 30% 367 RPM 20% 63 RPM 10% 0 RPM CH_FAN_1 and CH_FAN_3 (Both 3PIN 900 RPM FANS) look like this 100% 827 RPM 90% 826 RPM 80% 827 RPM 70% 829 RPM 60% 828 RPM 50% 830 RPM 40% 831 RPM 30% 833 RPM 20% 833 RPM 10% 835 RPM I also tried different UEFI Versions (actual 2.00) an reset is via CMOS Jumper, Nothing changed. Even the Fan that works on Connector 2 wont work on 1 an 3, and vice versa... |
Replies:
Posted By: PaperPlanePilot
Date Posted: 19 May 2018 at 6:43pm
" rel="nofollow -
I Found this in the Manual, so CHA_FAN3 schould work with a Three Pin Fan ??div>
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Posted By: badbri
Date Posted: 21 May 2018 at 8:18am
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" rel="nofollow - Have you tried manually creating profiles for fans on 1 and 3 ? I created my own profiles, did not like the ones by "fan tuning". ------------- https://www.passmark.com/baselines/V9/display.php?id=99573335296 |
Posted By: Dmytro_o_o
Date Posted: 30 Jul 2018 at 4:02pm
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Hi everyone. I`v done some research with my Z370 Pro4 (BIOS v.1.50) and discovered this: CPU_FAN1: - supports PWM (4pin) fan - does not support DC (3pin) fan (only max speed on 12V) CHA_FAN1: - supports PWM (4pin) fan - does not support DC (3pin) fan (only max speed on 12V) CHA_FAN2: - supports PWM (4pin) fan - supports DC (3pin) fan CHA_FAN3/W_P: - supports PWM (4pin) fan - supports DC (3pin) fan (if you set "DC Mode" in BIOS\Advansed\HW monitor\Chasis Fan 3 Control Mode (in the end of settings list). So, I recomend PaperPlanePilot to set CHA_FAN3 in "DC Mode" ------------- MB:ASRock Z370 Pro4 CPU:i5 8600K RAM:16GB GPU:GTX 1070Ti |
Posted By: badbri
Date Posted: 03 Aug 2018 at 10:06am
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Thanks for the update and glad you figured it out. Odd that CHA_FAN1 does not support controlled 3 wire. As for CPU fans: have not seen a 3 wire fan on a good heat sink since before the old Intel Core 2 days. ------------- https://www.passmark.com/baselines/V9/display.php?id=99573335296 |
Posted By: Dmytro_o_o
Date Posted: 03 Aug 2018 at 5:50pm
For example Phanteks PH-TC14PE uses 3pin fans. And old, but quite popular Noctua NH-D14 - same story.  But I still have hope that ASRock will fix it in further BIOSes. Why? Because I`v seen ASRock H370 Pro4 review where CHA_FAN1 and CHA_FAN2 have their own "Chasis Fan Control Mode" (same as CHA_FAN3):  ------------- MB:ASRock Z370 Pro4 CPU:i5 8600K RAM:16GB GPU:GTX 1070Ti |