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

 

[Paperdoc]

So the setting is correct.

FYI to help. NORMAL process for EVERY fan header on mobos is this. At start-up, ALL fans are told to start at full speed and should do. As the POST process concludes in a few seconds (5 to 10 often) the fans then are told to slow down to the speed needed according to the temperature-based automatic control system.

So, open your case so you can see the fans clearly. Make sure you can see your screen. Boot into BIOS Setup. Observe as quickly as you can the pump speed AND the behaviour of any fan inside. When you see that fan it should start fast, then slow down in a short time. Does the PUMP speed show that same behaviour? Or, does the pump NEVER show any speed?

NOW, another important factor, because MAYBE the problem ONLY is the the speed signal, and not the actual performance of the pump. When you are operating normally, and especially at high workloads, does your system give any indication that CPU cooling is poor? If the pump really is NOT working you should be getting NO cooling, the system should overheat quickly, and the CPU temperature should show a rapid rise to the high 80's and more! If you do get that, the pump is not working and you do need a real fix - like, replace the AIO system. BUT if you are getting GOOD cooling even on heavy workloads, the pump IS working, and the problem is the speed SIGNAL. That signal is a series of pulses sent by the pump to the CPU_FAN header on Pin #3 of the connector. If that fails to reach the header on an intermittent basis, you have a poor electrical connection. It could be a dirty contact at the connector. for that you can try (with the system off) unplugging and re-plugging it several times to "scrub" oxidation and dirt off, then ensure it is plugged in securely and boot up to see if it works. While at that, visually examine the connector and the wires to it. Any hint of a un-springy bit inside the connector, or of a loose wire or poor connection inside? You may find an issue you can repair.

 

[Somerandomguy165]

So the setting is correct.

FYI to help. NORMAL process for EVERY fan header on mobos is this. At start-up, ALL fans are told to start at full speed and should do. As the POST process concludes in a few seconds (5 to 10 often) the fans then are told to slow down to the speed needed according to the temperature-based automatic control system.

So, open your case so you can see the fans clearly. Make sure you can see your screen. Boot into BIOS Setup. Observe as quickly as you can the pump speed AND the behaviour of any fan inside. When you see that fan it should start fast, then slow down in a short time. Does the PUMP speed show that same behaviour? Or, does the pump NEVER show any speed?

NOW, another important factor, because MAYBE the problem ONLY is the the speed signal, and not the actual performance of the pump. When you are operating normally, and especially at high workloads, does your system give any indication that CPU cooling is poor? If the pump really is NOT working you should be getting NO cooling, the system should overheat quickly, and the CPU temperature should show a rapid rise to the high 80's and more! If you do get that, the pump is not working and you do need a real fix - like, replace the AIO system. BUT if you are getting GOOD cooling even on heavy workloads, the pump IS working, and the problem is the speed SIGNAL. That signal is a series of pulses sent by the pump to the CPU_FAN header on Pin #3 of the connector. If that fails to reach the header on an intermittent basis, you have a poor electrical connection. It could be a dirty contact at the connector. for that you can try (with the system off) unplugging and re-plugging it several times to "scrub" oxidation and dirt off, then ensure it is plugged in securely and boot up to see if it works. While at that, visually examine the connector and the wires to it. Any hint of a un-springy bit inside the connector, or of a loose wire or poor connection inside? You may find an issue you can repair.

The fans themself I can’t check in the bios since there Lian li to fans connected to a controller or atleast wouldn’t know where to look however on boot every fan does turn on for a few seconds but pump when it decides not to work I can assume doesn’t as it’s already high 80s in bios alone whereas when the pump does decide to work it’s high 20s at max in the bios and when I am looking for cpu fan speed when the pump isn’t working it loads straight to 0rpm

When pump is working the system performs as expected with high 30s mid 40s on idle and in a game it’s at most 60–68 with the highest iv gotten it being 85 on cinebench multi core workload note my cpu is a 9800x3d Ik im lucky but when the pump isn’t working and I boot to windows immediately it’s 95-96 I will have a look at the wire itself in the morning but the aio is fairly new I only put the system together on the weekend and every part is brand new

 

[Paperdoc]

Yeah, your info says the pump really IS doing what the speed reading says. When it says the pump speed is zero is also when the measured temperatures rise VERY rapidly. So there may be a bad connection, but its impact is on the wires for Pins 1 and 2 (power Ground and +12 VDC supply lines). So same sort of advice: try the "scrubbing" moves and check for other signs of dirty or loose or broken connections.

It is possible that you will NOT find any obvious and fixable flaws. There may be an invisible internal flaw in this brand new system requiring warranty replacement from the maker.

 

[Somerandomguy165]

Yeah, your info says the pump really IS doing what the speed reading says. When it says the pump speed is zero is also when the measured temperatures rise VERY rapidly. So there may be a bad connection, but its impact is on the wires for Pins 1 and 2 (power Ground and +12 VDC supply lines). So same sort of advice: try the "scrubbing" moves and check for other signs of dirty or loose or broken connections.

It is possible that you will NOT find any obvious and fixable flaws. There may be an invisible internal flaw in this brand new system requiring warranty replacement from the maker.

I already contacted Lian li about it and there sending a replacement pump I’m hoping that fixes it il have a look at the wires tonight if it’s fixable got myself a free pump