A problem with my fan controller

[Vectorized]

Hi guys,
I have a problem with my fan controller (a Lamptron FC5 V2, up to 30 W per channel).

I've connected two fans (Corsair SP120), both to one channel by a common splitter. The question is that when the channel control know is between 0 and 75% everything work normally, but when I raise it to 75 or more the fans stop for a half of a second and then restart. This happens randomly, and it seems that the channel loses power for a about 0.5 seconds.

It is very annoying because the temps raise during that 0.5 seconds, when the fans lose power.

Why do you think this happens?
I can't figure it out.

Thank you very much!

 

[ihog]

Can you try connecting two other fans to the splitter, connecting it to the fan controller, and seeing if the issue occurs?

 

[Vectorized]

Can you try connecting two other fans to the splitter, connecting it to the fan controller, and seeing if the issue occurs?

Yes, I can. Do you think the fans are the problem?

 

[ihog]

No, I think the splitter is. But anything's possible.

 

[Vectorized]

I suspect that the problem derives from the Corsair's fans, because I have two other fans connected to fan controller (Corsair AF140) with the same splitter and zero issues...
I wonder why, considering that the Corsair AF140s work well and the Corsair SP120s don't...

I also tried to attach the Corsair SP120s to another channel, but the problem persists.