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EK Pump Issue - Need Help Please

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post #1 of 31 (permalink) Old 09-16-2019, 12:26 PM - Thread Starter
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EK Pump Issue - Need Help Please

Hi everyone,

I'm new to water cooling and I'm having an issue with an EK D5 pump.

I've built out a custom loop and have performed a leak test. All worked well, no leaks (hooray).

Now I've hooked up all components, connectors etc. When I start the system, the pump will not start. I need to shut the system down after 30-45 seconds as I see the CPU temp climb in the BIOS. BIOS also not detected any cooling fan for the CPU.

I've tried just hooking the pump up to the 4 pin Molex direct from PSU, tried using all the different headers on the motherboard, no luck. I know the pump works and is powering on and pushing fluid through the loop when the PSU is shorted, it just won't work when not jumped.

Any ideas?
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Last edited by DFIRINTHEDARK; 09-16-2019 at 12:34 PM.
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post #2 of 31 (permalink) Old 09-16-2019, 12:51 PM
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So, just as a question, If you plug in just the molex connector, and not the fan plug. Then power the pc on, does the pump turn on?

So, Molex plugged in. Fan unplugged. Power?

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(13 items)
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AMD FX-8370
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MSI 990FXA-Gaming
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AMD PowerColor RX 580
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G.Skill - Ripjaws X Series 16Gb
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G.Skill - Ripjaws X Series 16 GB
Hard Drive
Samsung 850 500Gb
Hard Drive
Seagate 3 Tb
Power Supply
Raidmax Vampire 800 Watt
Cooling
EK-Suprema​cy MX CPU ​Block
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XSPC 240mm​ Radiator
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post #3 of 31 (permalink) Old 09-16-2019, 01:01 PM - Thread Starter
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Quote: Originally Posted by Destrto View Post
So, just as a question, If you plug in just the molex connector, and not the fan plug. Then power the pc on, does the pump turn on?

So, Molex plugged in. Fan unplugged. Power?
Yes, exactly.

Molex + fan plug with PSU jumped/shorted = Pump works
Molex with PSU jumped/shorted = Pump works
Molex + fan plug with everything connected, PSU fully connected to motherboard and system = Pump won't start
Molex with everything connected, PSU fully connected to motherboard and system = Pump won't start

So there is something causing the pump to not power on when the system is fully hooked up.

I'm running the following:

Intel i9-9900K
Gigabyte Z390 mobo
MSI Seahawk RTX 2080Ti
64 GB Ballistix RAM
Seasonic Platinum 1300W PSU
EKD5 Pump
EK X3 Res reservoir
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post #4 of 31 (permalink) Old 09-16-2019, 01:13 PM
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Quote: Originally Posted by DFIRINTHEDARK View Post
Yes, exactly.

Molex + fan plug with PSU jumped/shorted = Pump works
Molex with PSU jumped/shorted = Pump works
Molex + fan plug with everything connected, PSU fully connected to motherboard and system = Pump won't start
Molex with everything connected, PSU fully connected to motherboard and system = Pump won't start

So there is something causing the pump to not power on when the system is fully hooked up.

I'm running the following:

Intel i9-9900K
Gigabyte Z390 mobo
MSI Seahawk RTX 2080Ti
64 GB Ballistix RAM
Seasonic Platinum 1300W PSU
EKD5 Pump
EK X3 Res reservoir
Only combination I don't see in your testing, is Molex connected and fan plug disconnected. Power system on normally. Have you tried that yet?

EK Club XCrossXFire ClubX
-OCN Water Cooling Club-
Destrto
(13 items)
CPU
AMD FX-8370
Motherboard
MSI 990FXA-Gaming
GPU
AMD PowerColor RX 580
RAM
G.Skill - Ripjaws X Series 16Gb
RAM
G.Skill - Ripjaws X Series 16 GB
Hard Drive
Samsung 850 500Gb
Hard Drive
Seagate 3 Tb
Power Supply
Raidmax Vampire 800 Watt
Cooling
EK-Suprema​cy MX CPU ​Block
Cooling
XSPC 240mm​ Radiator
Cooling
XSPC 240mm​ Radiator
Cooling
EK-XRES 140 DDC 3.2 PWM Elite
Case
HBT Gravity6
▲ hide details ▲
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post #5 of 31 (permalink) Old 09-16-2019, 01:20 PM - Thread Starter
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Quote: Originally Posted by Destrto View Post
Only combination I don't see in your testing, is Molex connected and fan plug disconnected. Power system on normally. Have you tried that yet?
Tried that (molex connected and and plug disconnected) and it doesn't power on the pump. I'm out of ideas at this point. Not quite sure what I'm missing.

I've also tried putting the PWM connector on all the different fan headers on the motherboard with the molex connected. No combination gets the pump to start.
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post #6 of 31 (permalink) Old 09-16-2019, 01:20 PM
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Quote: Originally Posted by DFIRINTHEDARK View Post
Yes, exactly.

Molex + fan plug with PSU jumped/shorted = Pump works
Molex with PSU jumped/shorted = Pump works
Molex + fan plug with everything connected, PSU fully connected to motherboard and system = Pump won't start
Molex with everything connected, PSU fully connected to motherboard and system = Pump won't start

So there is something causing the pump to not power on when the system is fully hooked up.

I'm running the following:

Intel i9-9900K
Gigabyte Z390 mobo
MSI Seahawk RTX 2080Ti
64 GB Ballistix RAM
Seasonic Platinum 1300W PSU
EKD5 Pump
EK X3 Res reservoir
the pump will run 100% if no pmw signal is detected. maybe check the fan header settings in the mobo bios.

but i suspect a flaky pmw signal on the pump - open a support ticket and just don't use the fan headers in the meantime; pump is fine at 100%. really if this is the first time, running it at 100% for a few days will be rid of any air thats likely still floating around - tiny bubbles.

Remember the golden rule of statistics: A personal sample size of one is a sufficient basis upon which to draw universal conclusions.
Upload the computer to Dropbox and provide a link to it so others may download it to examine and give advice for repairs.
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i7-3770K
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Asus P8Z77-V Pro
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EVGA 980TI SC+
RAM
16Gb PNY ddr3 1866
Hard Drive
PNY 1311 240Gb
Hard Drive
1 TB Seagate
Hard Drive
3 TB WD Blue
Optical Drive
DVD DVDRW+/-
Power Supply
EVGA SuperNova 750 G2
Cooling
EKWB P280 kit
Cooling
EK-VGA supremacy
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Stryker M [hammered and drilled]
Operating System
Win X
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LG 24MC57HQ-P
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post #7 of 31 (permalink) Old 09-16-2019, 01:25 PM - Thread Starter
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Quote: Originally Posted by looniam View Post
the pump will run 100% if no pmw signal is detected. maybe check the fan header settings in the mobo bios.

but i suspect a flaky pmw signal on the pump - open a support ticket and just don't use the fan headers in the meantime; pump is fine at 100%. really if this is the first time, running it at 100% for a few days will be rid of any air thats likely still floating around - tiny bubbles.
I tried playing in the BIOS in regards to the fan headers. All show as not connected/undetected, regardless of where I plug it in. I just don't get why the pump will run fine with the PSU shorted, but as soon as I put the 24 pin connector from the PSU to the motherboard, pump will no longer power on with the system.
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post #8 of 31 (permalink) Old 09-16-2019, 01:30 PM
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Quote: Originally Posted by DFIRINTHEDARK View Post
I tried playing in the BIOS in regards to the fan headers. All show as not connected/undetected, regardless of where I plug it in. I just don't get why the pump will run fine with the PSU shorted, but as soon as I put the 24 pin connector from the PSU to the motherboard, pump will no longer power on with the system.
whoa, that makes no sense.

????

you sure the molex is still powered? i know it sounds crazy but were you using the same molex connection for short/connected to 24 pin?

Remember the golden rule of statistics: A personal sample size of one is a sufficient basis upon which to draw universal conclusions.
Upload the computer to Dropbox and provide a link to it so others may download it to examine and give advice for repairs.
loon 3.2
(18 items)
CPU
i7-3770K
Motherboard
Asus P8Z77-V Pro
GPU
EVGA 980TI SC+
RAM
16Gb PNY ddr3 1866
Hard Drive
PNY 1311 240Gb
Hard Drive
1 TB Seagate
Hard Drive
3 TB WD Blue
Optical Drive
DVD DVDRW+/-
Power Supply
EVGA SuperNova 750 G2
Cooling
EKWB P280 kit
Cooling
EK-VGA supremacy
Case
Stryker M [hammered and drilled]
Operating System
Win X
Monitor
LG 24MC57HQ-P
Keyboard
Ducky Zero [blues]
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Audio
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post #9 of 31 (permalink) Old 09-16-2019, 01:30 PM
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Quote: Originally Posted by DFIRINTHEDARK View Post
Tried that (molex connected and and plug disconnected) and it doesn't power on the pump. I'm out of ideas at this point. Not quite sure what I'm missing.

I've also tried putting the PWM connector on all the different fan headers on the motherboard with the molex connected. No combination gets the pump to start.
It does sound like you have something faulty going on.

I would possibly look into any and all BIOS settings that might affect this. As it sounds like something in the BIOS is affecting the pump from powering on.

EK Club XCrossXFire ClubX
-OCN Water Cooling Club-
Destrto
(13 items)
CPU
AMD FX-8370
Motherboard
MSI 990FXA-Gaming
GPU
AMD PowerColor RX 580
RAM
G.Skill - Ripjaws X Series 16Gb
RAM
G.Skill - Ripjaws X Series 16 GB
Hard Drive
Samsung 850 500Gb
Hard Drive
Seagate 3 Tb
Power Supply
Raidmax Vampire 800 Watt
Cooling
EK-Suprema​cy MX CPU ​Block
Cooling
XSPC 240mm​ Radiator
Cooling
XSPC 240mm​ Radiator
Cooling
EK-XRES 140 DDC 3.2 PWM Elite
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HBT Gravity6
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post #10 of 31 (permalink) Old 09-16-2019, 01:36 PM - Thread Starter
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Quote: Originally Posted by looniam View Post
whoa, that makes no sense.

????

you sure the molex is still powered? i know it sounds crazy but were you using the same molex connection for short/connected to 24 pin?
Yup, same molex. I even plugged another molex to a different output of the PSU and performed the same tests. Pump powers on with PSU shorted, won't power on with 24pin connector plugged to motherboard.

Only thing I haven't done is measured the output voltage on the pins of the molex, however nothing changes from shorted to connected to motherboard for that output.

I don't change the molex connection at all.
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