Solved Corsair 115i sudden cooling issue

March 8, 2017 at 07:28:22
Specs: Windows 7 Ultimate 64-bit, Intel Core i7 @ 3.9GHz | 8GB DDR3 1333MHz
I've had my Corsair H115i since November 2016 (my first liquid CPU cooler), and didn't have any issues with it at all since installation. However, I recently noticed that, during my initial installation of the cooler, I forgot to add the Corsair Link cable to the block. I went ahead and did that, but when I turned my computer back on, the radiator fans suddenly began to spin at maximum, paused, and then continued to spin at maximum. When Windows booted, Core Temp said my processor was running at over 100°C. (At which point I obviously switched the computer off.)

I've tried re-installing the block and re-applying thermal paste several times now, but I get the exact same results. However, unlike the very first time I turned on the computer after installing the Corsair Link cable, the fans spin at maximum continuously without any pause. BIOS temperature readings show the processor, from a cold start, slowly climbing from 45°C all the way to 85°, at which point I turn it off.

I'm guessing that something happened to the pump when I turned the PC on after installing the cable, so this might be a lost cause and a warranty claim, but any tips that might help me avoid having to ship the unit to California would be great. System specifications are in my signature.

For reference, I still have thermal paste and have already cleaned off both the pump block and CPU yet again. I also still have the stock Intel cooler available to install if needed for testing.

MSI B75MA-P45
Intel Core i7-3770K 3.9GHz
Corsair H115i CPU cooler
8GB DDR3 1333MHz
EVGA GeForce GTX 1070 8GB
Samsung 840 EVO 120GB SSD (Windows 7 Ultimate)
Toshiba 2TB

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✔ Best Answer
March 8, 2017 at 16:43:55
Only other thing I can think of is check that the pump block is firmly touching the cpu, and the thumbscrews are sufficiently tight. Other than that you may have a faulty pump. If you wanted to attempt to boot into Windows you can check the pump status in Corsair Link.

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#1
March 8, 2017 at 08:24:36
I've installed the stock Intel cooler for now. If we can't figure it out by some time tomorrow, I'll assume the pump is dead and set up a return order.

MSI B75MA-P45
Intel Core i7-3770K 3.9GHz
Corsair H115i CPU cooler
8GB DDR3 1333MHz
EVGA GeForce GTX 1070 8GB
Samsung 840 EVO 120GB SSD (Windows 7 Ultimate)
Toshiba 2TB


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#2
March 8, 2017 at 13:48:58
I'm confused. Doesn't the Link cable provide USB power to the pump? How could you run for months without the cable being connected? Did you install the Link software?

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#3
March 8, 2017 at 15:11:35
riider, the pump is supplied power by a Sata power connector on the H115i, I have one installed on my fx8350. I believe the USB cable is simply for Corsair Link functionality. It is possible the OP accidentally knocked the Sata power connector on the pump loose. I would check that before attempting to turn on the pc again.

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#4
March 8, 2017 at 15:58:37
@amdfan

The USB cable is just for Corsair Link functionality, as you said. However, the SATA connector shouldn't be the issue, as I've already completely re-installed everything several times save for dismounting the radiator and fans.

Just in case, though, I'll go through the process of installing the pump block again and check all the connections to ensure there are no power issues.

MSI B75MA-P45
Intel Core i7-3770K 3.9GHz
Corsair H115i CPU cooler
8GB DDR3 1333MHz
EVGA GeForce GTX 1070 8GB
Samsung 840 EVO 120GB SSD (Windows 7 Ultimate)
Toshiba 2TB

message edited by Comguy


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#5
March 8, 2017 at 16:20:55
Do you have a modular PSU? Unlikely the issue but if you do make sure the cable with the sata connector powering the pump is firmly plugged into the PSU. Long shot but you never know. Also, try a different sata power connector. Did you connect the plug to the cpu_fan header on the motherboard?

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#6
March 8, 2017 at 16:41:13
I have an HX750 modular, so I'll make sure to check that as well- just in case. The CPU fan header cable has been reconnected several times during my installations, so that shouldn't be a factor.

MSI B75MA-P45
Intel Core i7-3770K 3.9GHz
Corsair H115i CPU cooler
8GB DDR3 1333MHz
EVGA GeForce GTX 1070 8GB
Samsung 840 EVO 120GB SSD (Windows 7 Ultimate)
Toshiba 2TB


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#7
March 8, 2017 at 16:43:55
✔ Best Answer
Only other thing I can think of is check that the pump block is firmly touching the cpu, and the thumbscrews are sufficiently tight. Other than that you may have a faulty pump. If you wanted to attempt to boot into Windows you can check the pump status in Corsair Link.

message edited by amdfan


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#8
March 9, 2017 at 09:35:21
I've just finished re-installing the pump and checked every connection from the block to the PSU, but I'm still getting the same results. At this point, I'm going to have to assume that the pump is dead and send it in for a warranty claim.

But thank you for the help, everybody!

MSI B75MA-P45
Intel Core i7-3770K 3.9GHz
Corsair H115i CPU cooler
8GB DDR3 1333MHz
EVGA GeForce GTX 1070 8GB
Samsung 840 EVO 120GB SSD (Windows 7 Ultimate)
Toshiba 2TB

message edited by Comguy


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#9
March 9, 2017 at 11:59:18
A little update, and what is possibly the last hope for this cooler;

I've tried checking the pump's status in Corsair Link, though it doesn't seem to appear in the list of devices for both the Home tab and the Configure tab. The USB cable and header are both secure.

However, there does seem to be movement in both the hoses and pump block. Unless there's something I'm missing, I'm still going to assume pump failure is the culprit.

MSI B75MA-P45
Intel Core i7-3770K 3.9GHz
Corsair H115i CPU cooler
8GB DDR3 1333MHz
EVGA GeForce GTX 1070 8GB
Samsung 840 EVO 120GB SSD (Windows 7 Ultimate)
Toshiba 2TB

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