EKWB EK-XRES 140 PWM Pump issue

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Marc_1098

Commendable
Feb 4, 2017
10
0
1,510
Hello there,

I've been having this issue on my pump-res combo since quite a while now. I decided to go on watercooling my system on August 2016. But on October, the pump suddenly stopped working.
It was strange, as the day before the pump was running perfectly. I disconnected everything to isolate the pump itself, and I realized that it was making a sound like a valve was closing and opening every 2 or 3 seconds, like a "tick-tock" sound kinda like. I think it was like the pump was wanting to actually pump de coolant but it was not able.
I had my pump changed for another one by EKWB, without solving the problem at all because they didn't tell me where the issue came from, they simply delivered a new pump.
Yesterday though it stopped working again and with the exact same issue: the opening-closing kind of valve. I actually managed to get it working by pluging and unpluging the 4 pin molex power connector several times within 30 min. And today as I'm writing this is happening again, though the CPU temp is below 70 degrees.

What could have made this happen? Has anyone had this same issue? If you tell me to empty the pump and refill it again I've already done it, and tilt the case around for some air bubbles and too.

Thanks for the help!
 

Marc_1098

Commendable
Feb 4, 2017
10
0
1,510


The pump is a EK-XRES 140 DDC 3.2 PWM Elite (incl. pump) and I set the PWM curve as a standard in my Asus motherboard.

 

EK Luc

Reputable
Nov 5, 2014
22
0
4,540


When the issue happen, do you still feel the pump vibrate when you touch it?
 

Marc_1098

Commendable
Feb 4, 2017
10
0
1,510


What I feel is the vibration it does everytime the "valve" does the sound (like opening and closing). Is like it's trying to work or push the coolant but it's not able and does that sound repetitely. By the way, the noise is almost unperceptible unless you have powered only the pump itself, then you hear it clearly.
 

Marc_1098

Commendable
Feb 4, 2017
10
0
1,510


JayzTwoCents has just released a video where his pump has suddenly stopped working, and THAT sound and that issue in general is what's been happening to my pump. I don't understand why it has happened eventually in every pump replacement EKWB has sent to me.

If you were asking what that sound was like, it's the EXACT same sound as in the video:
https://www.youtube.com/watch?v=ExO1r84zm80
 
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