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Water cooling: Radiator not warm

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aneantisseur Posted messages 377 Registration date   Status Member Last intervention   -  
marcmarais Posted messages 24260 Status Moderator -
Hello, I currently have a small problem with my water cooling.

Indeed, the pump is on (there is a small diode inside), but my processor is heating up quite a bit.

After some checks, I noticed that the radiator of the kit isn’t dissipating anything since it isn’t warm.

Any ideas on the origin of the problem?

Thanks!

Configuration: Windows / Chrome 54.0.2840.99

4 answers

  1.
    marcmarais Posted messages 24260 Status Moderator 4 568
     
    Hello,

    From what you describe, I think there’s a bad mounting of the water block on the CPU, with a pocket of air preventing heat from escaping

    Without any other information about your hardware (watercooling kit, CPU, motherboard, …), it’s hard to say more to you
    4
    1. aneantisseur Posted messages 377 Registration date   Status Member Last intervention   18
       
      My config:
      i5 6600k
      GTX 980 TI (Asus STRIX DCU III)
      Msi Z170A Gaming M3
      Enermax Liqmax II 120S

      The problem appeared overnight
      0
      1. marcmarais Posted messages 24260 Status Moderator 4 568 > aneantisseur Posted messages 377 Registration date   Status Member Last intervention  
         
        The problem appeared overnight
        does that imply everything was fine before?
        how long did it work for?

        can you indicate the current CPU temperature?
        do you remember what it was before?
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    2. aneantisseur Posted messages 377 Registration date   Status Member Last intervention   18
       
      So, yes, everything was good before. I never paid close attention to temperatures, but the fan hardly ever spun at full speed like it does now.

      The current temperature (it's dropped since this morning) reads 84° in game, 98 at peak (Wow on a WQHD, 3 monitors connected, Chrome on a second screen) and 50-55° idle
      0
  2. aneantisseur Posted messages 377 Registration date   Status Member Last intervention   18
     
    This Enermax system says that the LED brightness depends on the pump power. Could it be that the connector where the pump was plugged has failed and that it’s because I plugged it into my motherboard, which wouldn’t provide enough power to the pump, that’s the cause?
    3
    1. marcmarais Posted messages 24260 Status Moderator 4 568
       
      It could be that the connector where the pump was plugged in gave out, and that it’s because I plugged it into my motherboard. And you thought it wasn’t important information? If you don’t provide all the info, we can’t help you properly! What happened? Where was the pump plugged in, and where did you plug it in afterward? According to the manufacturer’s documentation, the pump must be plugged into a 3-pin connector with 12V permanent power. If you plugged it into a 3-pin connector controlled by the BIOS, it’s not surprising that the pump isn’t working properly...
      1
    2. aneantisseur Posted messages 377 Registration date   Status Member Last intervention   18
       
      Well, I would have known it was the possible cause of the problem. I didn't really think about the power supply for the pump. I tested plugging it into the motherboard as a last resort (before the problem and after, it was plugged directly to the power via an adapter), after your last message. I had this idea right after the plug-in, about 1h30 ago. So, since it wasn’t working, I reconnected it to another MOLEX, and since then it seems to be working. Is it normal for a MOLEX to fail all of a sudden like that? Because that’s apparently what happened, overnight.
      0
    3. marcmarais Posted messages 24260 Status Moderator 4 568 > aneantisseur Posted messages 377 Registration date   Status Member Last intervention  
       
      well, problem solved :)

      That a MOLEX connector fails all of a sudden, is that normal?
      no, but I don't know your power supply...
      0
    4. aneantisseur Posted messages 377 Registration date   Status Member Last intervention   18
       
      Cooler Master G750M
      0
    5. marcmarais Posted messages 24260 Status Moderator 4 568 > aneantisseur Posted messages 377 Registration date   Status Member Last intervention  
       
      well, it's not normal, I don't know what to tell you...
      was the connector properly plugged in?
      maybe some oxidation?
      0
  3. aneantisseur Posted messages 377 Registration date   Status Member Last intervention   18
     
    Could it be due to dust in the radiator (there really is some, but really just a little ^^)?
    0
    1. marcmarais Posted messages 24260 Status Moderator 4 568
       
      no, the radiator would be hot if everything was working normally
      it would be very hot if the dusts prevented heat from escaping

      if the radiator is lukewarm or cold as you indicate, that means heat transfer from the CPU to the radiator is not happening

      it could be:
      poor contact of the waterblock
      defective pump
      evaporation of the liquid
      ...
      0
  4. marcmarais Posted messages 24260 Status Moderator 4 568
     
    The current temp shows 84° in-game, 98° peak.
    That's way too high indeed.

    Check the water block mounting; it may have shifted, a mounting leg might be loose...

    Are you sure the pump is working? LED on is OK, but do you feel any vibrations?

    Can you check the liquid level in the circuit?

    PS: but the fan hardly ever ran at full speed before, like now.
    Is the fan running at full speed continuously?
    0
    1. aneantisseur Posted messages 377 Registration date   Status Member Last intervention   18
       
      So the setup is okay, I took it apart/reassembled it twice.

      The pump is working, I tried to only connect that, I can hear the noise well.
      I can't see the liquid level.

      The fan is spinning at full speed, yes, starting at 85°.
      0
    2. marcmarais Posted messages 24260 Status Moderator 4 568 > aneantisseur Posted messages 377 Registration date   Status Member Last intervention  
       
      The radiator fan is running at full speed because it’s controlled by the sensor at the CPU level. Is the radiator warm or cold?
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    3. aneantisseur Posted messages 377 Registration date   Status Member Last intervention   18
       
      Cold. however the pipe that brings the liquid from the CPU to the radiator is very hot when the CPU is very hot. The transport is fine, it is at the radiator that it freezes...
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    4. marcmarais Posted messages 24260 Status Moderator 4 568 > aneantisseur Posted messages 377 Registration date   Status Member Last intervention  
       
      for me that means the fluid is not circulating
      how long have you had this Enermax water cooling?
      0
    5. aneantisseur Posted messages 377 Registration date   Status Member Last intervention   18
       
      1 year
      1