[SOLVED] One of my coolermaster master liquid fans is not pwm controlled.

[Nekross]

Is it normal that one of my fans is not controlled? Couldn't find any information so I'm asking here. The cable splitter for power that came with the cooler had one of the pins missing. One can is spinning at 1300 rpm and the other at 900.

 

[Mtop]

Need more info.
4 wires to fan = PWM, Pulsed voltage speed control with Tachometer feedback.
3 wires to fan = Voltage control of speed
2 wire = on/off full speed
Now what connections does each fan have?
What is the max speed of each fan?
Where does the cable splitter originate?

Keep in mind different fans have different max speeds.
Controling a PWM and Voltage toegether will work but may operate differently, at slow speed 1 fan may not work at fast speed 1 fan may not be fast enough to get rid of the heat.

 

[Zerk2012]

Is it normal that one of my fans is not controlled? Couldn't find any information so I'm asking here. The cable splitter for power that came with the cooler had one of the pins missing. One can is spinning at 1300 rpm and the other at 900.

It's only reading one fan the splitter cable leaves off the other wire on purpose so their only one input. Both fans should truly be running the same speed.

 

[Nekross]

Need more info.
4 wires to fan = PWM, Pulsed voltage speed control with Tachometer feedback.
3 wires to fan = Voltage control of speed
2 wire = on/off full speed
Now what connections does each fan have?
What is the max speed of each fan?
Where does the cable splitter originate?

Keep in mind different fans have different max speeds.
Controling a PWM and Voltage toegether will work but may operate differently, at slow speed 1 fan may not work at fast speed 1 fan may not be fast enough to get rid of the heat.

They are the masterfan mf120r RGb.
Max speed 2000 rpm +-10%
The fan splitter is from the masterliquid cooler and is plugged into CPU fan1 on my Asrock b550m Pro4.

 

[Mtop]

If only 1 fan has feedback then you can't know the speed of the 3 wire fan. I'll bet it's the same speed.

 

[Nekross]

It's only reading one fan the splitter cable leaves off the other wire on purpose so their only one input. Both fans should truly be running the same speed.

Oh, I see. That makes sense. Thanks.
Also, should they pull air or push out of the case? In my case(sharkoon pure steel), I want the cooler on the side panel for added cool points. Three fans on the bottom pulling air in, one rear exhaust + power supply. I'm unable to upload an image of the computer, but I believe you can imagine what I'm talking about.

 

[scout_03]

use the cooler in position same as picture above the front fan pushing air to fin and back fan pulling air out also in you case front should be intake and back with top exhaust you wont have better cooling to put cpu fans on side panel .

 

[Nekross]

use the cooler in position same as picture above the front fan pushing air to fin and back fan pulling air out also in you case front should be intake and back with top exhaust you wont have better cooling to put cpu fans on side panel .

The front panel is sealed. I know it's not ideal, but I still like the case. Just want to know if it would be a better idea to make them pull air in. Also, thought about making the rear exhaust slower rpm, so I can do positive air pressure. I'm still not sure about the pressures and stuff.

 

[scout_03]

this case use side one that the one should be input and try to use fans that have same cfm front and back means the flow that goes in will be the same out .