Question Hydroshift 360 tl pump not working

[Somerandomguy165]

the aio works normally however occasionally when booting the pump fails to start the header is in pwm mode and on the cpu fan header i have tried cpu opt and system fan 4 pump the motherboard is the gigabyte x870 eagle 7 wifi

 

[Lutfij]

Welcome to the forums, newcomer!

What BIOS version are you on for your motherboard? Have you tried hooking the pump to your CPU's fan header and swapped the fan hub tot he CPU_OPT fan header(or any other fan header that has PWM support)?

 

[Somerandomguy165]

Welcome to the forums, newcomer!

What BIOS version are you on for your motherboard? Have you tried hooking the pump to your CPU's fan header and swapped the fan hub tot he CPU_OPT fan header(or any other fan header that has PWM support)?

thank you my board bios is the F2 update i have tried other headers all of them in pwm mode and as we speak its currently in the CPU fan head the issue itself is very inconsistent sometimes the pump starts sometimes it refuses too

 

[Paperdoc]

Connecting the PUMP of an AIO to the CPU_FAN headed is the right way, because it is important for a SECOND function of that header - monitoring the speed signal from its "fan" (really here, PUMP) for FAILURE. But there is an important "trick" to this they do not explain in most manuals. Most pumps (including yours) are intended to run at full speed all the time, and are wired just like older 3-pin fans. That means that IF it is connected to a CPU_FAN header that IS operating in the new PWM Mode of speed control signals, the pump WILL run full speed all the time as intended. HOWEVER, if the header is set to the older Voltage Control Mode it will force the PUMP speed to slow down when temps are cooler.

The problem that arises is because so many fan headers now offer a MODE setting they call "Auto" and that is often the default setting. See your mobo's BIOS Setup manual, p6, under FAN / PUMP Control Mode. If the setting is "AUTO", what it does on EVERY start-up is TEST the item (your pump) connected to check whether it CAN slow down the pump by using PWM signals. If it cannot, then it changes itself to using the older Voltage Control Mode so it CAN force that pump to slow down. But that is what you do NOT want! You MUST set that option to PWM Mode only, so that the header never reduces the Voltage supplied to the pump, and it WILL run full speed always as designed.

 

[Somerandomguy165]

Connecting the PUMP of an AIO to the CPU_FAN headed is the right way, because it is important for a SECOND function of that header - monitoring the speed signal from its "fan" (really here, PUMP) for FAILURE. But there is an important "trick" to this they do not explain in most manuals. Most pumps (including yours) are intended to run at full speed all the time, and are wired just like older 3-pin fans. That means that IF it is connected to a CPU_FAN header that IS operating in the new PWM Mode of speed control signals, the pump WILL run full speed all the time as intended. HOWEVER, if the header is set to the older Voltage Control Mode it will force the PUMP speed to slow down when temps are cooler.

The problem that arises is because so many fan headers now offer a MODE setting they call "Auto" and that is often the default setting. See your mobo's BIOS Setup manual, p6, under FAN / PUMP Control Mode. If the setting is "AUTO", what it does on EVERY start-up is TEST the item (your pump) connected to check whether it CAN slow down the pump by using PWM signals. If it cannot, then it changes itself to using the older Voltage Control Mode so it CAN force that pump to slow down. But that is what you do NOT want! You MUST set that option to PWM Mode only, so that the header never reduces the Voltage supplied to the pump, and it WILL run full speed always as designed.

it is set to pwm mode the issue isn't that its slowing down its that the pump does not start from boot at random intervals and i have confirmed that using Lconnect HwInfo and the bios screen itself