Despite all signs, the CPU continues to overheat even though the AIO pump appears to be functioning properly.
Despite all signs, the CPU continues to overheat even though the AIO pump appears to be functioning properly.
Hello everyone, I set up my system in January 2022 and it has been functioning well for six months. Recently, I encountered a confusing problem. My setup uses an MSI Z690-P motherboard with an EK AIO Elite 360. Occasionally, temperatures would rise to 80°C during idle, even though the BIOS indicates the pump is operational. (I’ve checked it physically and confirmed it’s still working.) My attempts so far include: resetting the BIOS, updating it, running both a fan curve and keeping it at full speed, reapplying thermal paste, and checking connections. When I touch the pump, it feels hot, suggesting a possible contact issue between CPU and cooler. This isn’t fully explained—thermal paste application seems inconsistent, possibly due to the LGA 1700 adapter provided by EK, but it doesn’t clarify why temps stay low for long periods. I’ve also swapped out different headers, though this is unusual: the system wouldn’t boot when connected to the PUMP_FAN header unless a real fan was plugged in (both 4-pin headers worked). My other specs include 32GiB G-Skill DDR4-3200 RAM, GTX 1070, and an i7-12700K processor (non-overclocked). Updated on July 10, 2022 by Olgyd.
Motors cease due to lack of power or obstruction in rotation. I suspect one of these issues is occurring. Use an instrument to check for power supply problems; if stoppages happen sporadically, a seal in the fluid or pump components is likely. Signs of overheating suggest a blockage.
Okay, so bad news: now I'm not even sure it's the pump. BIOS informs me that it is, in fact, running at ~3500RPM despite temps being in the 80s. Faulty reading, or is the problem something else entirely? And if it is the latter, what else could it be? The radiator is top-mounted so as I understand air bubbles won't be the cause, but I do hear a fair bit of sloshing when I take it out and gently shake it.
There are reliable methods to verify flow rate accurately. To distinguish between fluid movement and pump vibrations, you can observe pressure changes or use a flow meter. For the detached pump blade, inspect it visually or with an ultrasonic sensor to assess condition. A blockage would likely cause reduced flow, while vibration might indicate misalignment or imbalance.
Does it move fluid? If the blade is completely detached it will stop pumping entirely. If only slightly connected it may work occasionally and then pause intermittently when conditions are just right. Since resistance plays a role, a flow indicator in the system would reveal the movement. These devices usually appear as spinning parts in clear examples, allowing you to observe the rotation. A flow meter can actually record the data and maintain a record.