PC Watercooling Pump Won't Move Coolant

[Noodles79]

So after a while of being a PC enthusiast, I finally decided to tying hardline tubing for a watercooling system I build. Everything went well up until the point I put my fluid in my res. I am using a D5 pump and when I power on the system the pump is clearly running (it hums and creates ripples in the coolant) but the pump doesn't want to move the coolant to any other components in the system. I don't know what the problem is and thanks to anyone in advance for helping.

 

[rubix_1011]

Right, I understood that. What about the Molex connector for the pump, is it making good contact or not?

 

[Noodles79]

The molex for the pump is completely plugged in and I believe the pins are making contact.

 

[rubix_1011]

That doesn't seem to make any sense - the pump was previously working but now does not all the sudden? Was it run dry or without coolant?

Without having another power supply or another pump, it's hard to troubleshoot but at this point it sounds like you have a dead pump, but D5's are pretty resilient so I question how 'dead' it actually is.

 

[AreFlame]

I've heard that if you put the pwm cable in the motherboard and the molex to the power supply the pump would automatically be in a really slow speed so that might be why the fluid isnt moving. If you have a pwm head on your molex cable i would put both cables directly to the psu because then it is going to go at full speed. This is only temporary until you got the fluid all in the system, then you can move the pwm cable back to a fan header on the motherboard and go into bios and adjust the speed and bumb it up a notch. This might not be the problem at all but its worth a try, to me it sounds more like a defect pump.

 

[Noodles79]

That doesn't seem to make any sense - the pump was previously working but now does not all the sudden? Was it run dry or without coolant?

Without having another power supply or another pump, it's hard to troubleshoot but at this point it sounds like you have a dead pump, but D5's are pretty resilient so I question how 'dead' it actually is.

I took another working power supply from an older PC and the pump still does not work. Also I never ran the pump dry and made sure I didn't. At this point I'm 99% sure the pump is dead and I will have to order a new one later tonight. Thank you so much for help.

 

[rubix_1011]

Hopefully that resolves your issues. Usually, D5 pumps are pretty resilient, but it also could be that something came disconnected from the PCB causing a broken electrical circuit.