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Trouble with EK-DDC 3.2 PWM

post #1 of 7
Thread Starter 
Hello All,
about two years ago i upgrade my pump setup and bought two EK-DDC 3.2 PWM (12V PWM pump) (i use it with the old version of EK DUAL DDC TOP).
I was pretty happy at begin, it's was work good with aquaero 5 xt.
But very soon troubles come.
Some time both pump not start properly or have very big delay (about 60 -90 seconds) sometimes pumps have unstable rpm, and time to time i hear strange noise from pumps
but after i plug them directly to motherboard they work mostly normal.
And real trouble comes a few months ago.
Both pumps become pretty noisy. They have a tickling noise like very old PWM fans.
And you can hear things like this smile.gif
https://www.youtube.com/watch?v=hP24pxNulLY
or this https://www.youtube.com/watch?v=B-mMiBwL4Z4 (full rpm)
they only operable on 1300 rpm frown.gif
and seems one pump have mechanical trouble with the impeller.
I have old pwm pump and i plan change failed impeller.
But still, i have trouble with electronics.
Pumps have the same trouble with a delay on start. But now this trouble appear at any type of connection.
And even more time to time pump just won't start.
I wrote to EK, but they just say: warranty is end, and offered me 10% discount on new one smile.gif
I know it's easy way just buy new, but i don't have free money at moment on new two pumps (i like how dual setup works smile.gif)
So maybe someone has any ideas what to do?
ps. pumps not overheated. from begin i place a fan near them
post #2 of 7
Have you tried posting a link here?

http://www.overclock.net/t/1474470/ocn-aquaero-owners-club

Sounds like it may have been a setup issue with your aquaero. There are helpful folks on the thread. Someone might have had a similar experience. redface.gif
post #3 of 7
Delayed start, progressing to full failure to start is a common failure mode for DDC pumps (maybe even the most common) I'm afraid.
If you google DDC pump problem or something similar you will see many occurances of it.

I have not yet seen anyone fix a pump in this state.
Its time to get new pumps sorry mate.
Edited by Ashcroft - 12/21/17 at 4:48pm
post #4 of 7
Thread Starter 
Quote:
Originally Posted by pgdeaner View Post

Have you tried posting a link here?

http://www.overclock.net/t/1474470/ocn-aquaero-owners-club

Sounds like it may have been a setup issue with your aquaero. There are helpful folks on the thread. Someone might have had a similar experience. redface.gif
No, it's a pump trouble, I'm pretty sure.
post #5 of 7
Thread Starter 
Quote:
Originally Posted by Ashcroft View Post

Delayed start, progressing to full failure to start is a common failure mode for DDC pumps (maybe even the most common) I'm afraid.
If you google DDC pump problem or something similar you will see many occurances of it.

I have not yet seen anyone fix a pump in this state.
Its time to get new pumps sorry mate.
ye, see so.
hope it's works sometime before it fully dies (hehe trouble is really progressing)
btw after this troubles with ddc pwm, I'm thinking, d5 pwm could have same troubles? or it's better to buy old 5 speed D5?
post #6 of 7
No I have yet to see any similar problems in D5's of any type. I don't think it's pwm related.

D5 is definately the way to go if you can fit it in.
post #7 of 7
Thread Starter 
Quote:
Originally Posted by Ashcroft View Post

No I have yet to see any similar problems in D5's of any type. I don't think it's pwm related.

D5 is definately the way to go if you can fit it in.
Thanks. I have Corsair 900D case. There is a lot place to d5 wink.gif
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