DianaC

I think I found the issue. My radiator is mounted vertically at the front of the case. Because the hoses are not long enough to reach around my video card (EVGA RTX-3080Ti Hybrid) if the hoses were at the bottom, I had to locate the hose connections at the top, though still well above the pump. It would appear that an air bubble got stuck somewhere. Turing the PC off and jiggling the hoses seems to have fixed the problem. Back to 35-36 degree coolant under load.

As the topic says, up until today my coolant temp never rose above 38 degrees, but now the coolant is over 40 when idle but radiator is ice cold. ICue says the pump piss running and my CPU temps seem normal (35 degrees at idle but always rose to the 80s under load). I'm puzzled why the radiator is cold...it used oi get quite warm with far lower coolant temps. Could the impeller be loose?

I had previously tried cold restarts - in oine case leaving the computer unplugged overnight. It simply refused to see more than 3 fans. Even swapped the port between one of the ML120s and a Noctua - it now saw the Noctua but not the ML120. Nothing worked to get the extra three fans recognized until I replaced the pump head.

Perhaps this is a known issue, but search didn't turn up any answers... I have a H150I Elite Capellix with the LCD option. When I tried to add 3 pull fans to the existing 3 push fans, the additional 3 fans were not found by the CoCo. The fans are Noctua 120mm PWM fans. There is no way to access the fan configuration once you attach the LCD. Fortunately, I purchased the LCD as an upgrade and I was able to reinstall the Logo pump head temporarily and then my additional 3 fans were recognized. I then reinstalled the LCD pump head and I could still see all six attached fans. This appears to me to be a bug. I should have been able to add the additional fans without having to replace pump heads. Latest firmware installed (v2.0.19 for the controller and v 2.0.0.3 for the LCD). iCue version 5.1.1109

Attaching 3 pin 5V ARGB devices to Corsair controllers is quite simple...head over to eBay and buy some adapters. There are 3 pin to Corsair lighting ports, 3 pin to Corsair fan ports and Corsair strip connector to 'standard' strip connector adapters available. I am typing this post on a PC with a Commander Pro, a Lighting Node Pro and a Lighting Node Core. There are 6 fans, a mix of Corsair and Noctua (with AirGoo frames for the Noctuas populated with 30 LEDs each), two corsair lighting strips and 4 AirGoo strips with 21 leds per strip. That's 154 argb LEDs, all controlled by iCue, along with my Asus Maximus Hero mobo. Corsair's 'argb protocol' is identical to any other manufacturer, they just use different connectors. The only tricky bit is the fans. Corsair uses a fourth conductor on their fan argb connectors that link effects across fans (e.g. allows Rainbow effects the roll across the fans as opposed to syncronized between them). A 3rd party fan, plugged into the LNC will simply act like it is attached to splitter. All the 3rd party fans will light up in sync (e.g. the fan setup light will be the same color on all non-Corsair fans). You also need to put the non-Corsair fans at the end of the bus. The reason I pursued this is not because Corsair is too expensive, but simply because their are items they don't offer...like a GPU support arm, or fan frames for non-illuminated fans. When you are spending a thousand dollars or more on a PC build, what difference is a few tens of dollars difference for the fans and lighting?