Question Issue with Arctic Liquid Freezer II 420-A RGB

[crazyhanuka]

PC configuration
RAM: Corsair Vengeance RGB Pro 32GB DDR4 Kit (2x16GB) RAM multicoloured see illumination x2 DDR4 3600 MHz (PC4-28800) DIMM 288 Pin, CL18
MBU: ASUS ROG Crosshair VIII Hero (Wi-Fi)
CPU: AMD Ryzen 9 5900X
SSD1: Crucial P5 Plus SSD NVMe 3D NAND PCIe M.2 Gen4 1TB
SSD2: Crucial P5 Plus SSD NVMe 3D NAND PCIe M.2 Gen4 2TB
PSU: EVGA SuperNOVA 1200 P3 80+ Platinum
GPU: ASUS TUF GeForce RTX3090 GAMING OC TUF-RTX3090-O24G-GAMING
AIO: Arctic Liquid Freezer II 420

The issue
I had this configuration since October 2022.
As of yesterday, after I turned on my PC, my AIO fans started working at 100% while no programs were running, I thought it's time to change my thermal paste on the CPU since I haven't done in a year. I applied a new thermal paste MX-5, put back everything on and turned on the PC. Again, the same issue, fans spinning like crazy, temperatures crazy, 90C at idle

https://imgur.com/a/eMYFo3I

View: https://imgur.com/a/eMYFo3I


I re-checked everything, incase something is wrong but everything seems fine, everything plugged correctly.

After the temperatures rises for a bit and was testing it out in the bios I noticed I had the CPU overheat error.

While I was turning on the PC I was checking the hoses and they both are good, however when I slightly touched one of the hoses the fans of the pump went back to normal work but and the temperatures lowered down to like 60-70C but still for an idle this is too much. I used to get 35-40C in idle.
After I tried to touch the hose again the fans ramped up back to full speed.
Here are the Bios pictures of fans

https://imgur.com/a/eMYFo3I

View: https://imgur.com/a/eMYFo3I


Also, I included the positioning of my AIO.
I thought I'd ask if I can somehow fix it myself. Anyone has any idea?

 

[Phaaze88]

https://www.arctic.de/us/lf-service-kit
Does your cooler have the QC Passed sticker on it? [Or it did, but you later removed it.]


MX-5 was discontinued due to quality control issues(oils were separating from the rest of the compound), so try a different paste, even if it's MX-4 or 6.

 

[crazyhanuka]

https://www.arctic.de/us/lf-service-kit
Does your cooler have the QC Passed sticker on it? [Or it did, but you later removed it.]


MX-5 was discontinued due to quality control issues(oils were separating from the rest of the compound), so try a different paste, even if it's MX-4 or 6.

I actually tried with another paste before Thermal Grizzly and Cooler Master. The same issue.

Regarding the QC check mark, I already applied for a replacement on their website as my AIO does not have the QC check mark. Do you think this could be the case? I thought from the videos I've watched that it's not a big deal?

Actually now that I've paid more attention while reading the above it could be this the issue. I guess I have to wait until my replacement is back.

 

[Phaaze88]

Regarding the QC check mark, I already applied for a replacement on their website as my AIO does not have the QC check mark. Do you think this could be the case? I thought from the videos I've watched that it's not a big deal?

If the AIO has crud in it, how is that not a big deal? It reduces the already low fluid flow rate of AIOs. It doesn't need to be any lower.

 

[crazyhanuka]

If the AIO has crud in it, how is that not a big deal? It reduces the already low fluid flow rate of AIOs. It doesn't need to be any lower.

Thank you for the answr, now it makes sense! Will be waiting for the replacement and then once I receive it and replace it then I will post an update if that has been solved.

 

[Paperdoc]

The symptoms you describe suggest that either:
1. There is crud accumulated in or near the pump unit that temporarily blocks fluid flow, and MAY be cleared but will return as a block; or,
2. The system has lost significant fluid so there are air bubbles in the system. They tend to reside in the pump so it cannot actually pump anything and there is NO movement of heat from the CPU and pump to the rad.

In BOTH cases there is NO reasonable way for you to open the system, clean it out, replace the fluid with the right stuff, and re-seal it completely. The ONLY solution is to replace the system, which I gather you are trying to do.