CPU Fan Coolermaster hyper 212 evo error

[HeyconPc]

I have used this cpu fan for two years straight, now it spins really slow, often down in 200-400 rpm, but might after some boot time go up to 1000 rpm max. I also recieve a cpu fan error on every boot. Another thing i noticed, is that it spins faster or slower, depending on how the cable for the fan itself is bended.

Can i assume that the fan is broken and get a new one, or can it simply be another issue?

 

[Zerk2012]

Could be that a wire is broke inside the insulation so its barely making contact. I would replace the fan if you have a 4 pin 120mm case fan in your PC you can try it with that one before buying a new one, make sure to mount it to the cooler.

 

[HeyconPc]

Could be that a wire is broke inside the insulation so its barely making contact. I would replace the fan if you have a 4 pin 120mm case fan in your PC you can try it with that one before buying a new one, make sure to mount it to the cooler.

i could take the stock cooler and try?

 

[navalweaponsofficer]

It could be a few things the MB connector, the wire, or the connection on the fan side. move the wore around at three points @ the fan @ the MB and the wire and see where the speed change is more repeatable. do you have another fan that you can use to check the MB connection if it seems to be coming from there?

 

[JackNaylorPE]

This is perfectly normal.

1. When connected to the CPU header on the MoBo, the control scheme will adjust fan speed to heat load.... if CPU gets hotter, then fan spins faster. put the system under load (suggest RoG Real Bench), and fan speed should rise.

2. The stock cooler is small fan with a rather high minimum rpm. The BIOS, by default, it set to provide a warning message "CPU Fan error" whenever that fan rpm is lower than what it expects to see.

Let's say the stock cooler's fan speed range is 800 to 1000 rpm. The BIOS might be set to give a warning in fan speed is below 750 rpm. The Hyper 212 then has a speed of 600 - 2000 rpm. So when you start up and the fan goes to 600 rpm, the BIOS is saying "WTH ? ... Im only seeing 600 rpm and my job is to tell this dude when it's below 750 rpm ... Danger Will Robinson !"

Go into BIos and lower the default minimum speed of the fan to a number appropriate for your cooler's fans.

 

[HeyconPc]

Could be that a wire is broke inside the insulation so its barely making contact. I would replace the fan if you have a 4 pin 120mm case fan in your PC you can try it with that one before buying a new one, make sure to mount it to the cooler.

Just tested the stock fan, and it went straight to 2180 rpm, so I think it is safe to assume the cable on my custom fan is broken?

 

[HeyconPc]

This is perfectly normal.

1. When connected to the CPU header on the MoBo, the control scheme will adjust fan speed to heat load.... if CPU gets hotter, then fan spins faster. put the system under load (suggest RoG Real Bench), and fan speed should rise.

2. The stock cooler is small fan with a rather high minimum rpm. The BIOS, by default, it set to provide a warning message "CPU Fan error" whenever that fan rpm is lower than what it expects to see.

Let's say the stock cooler's fan speed range is 800 to 1000 rpm. The BIOS might be set to give a warning in fan speed is below 750 rpm. The Hyper 212 then has a speed of 600 - 2000 rpm. So when you start up and the fan goes to 600 rpm, the BIOS is saying "WTH ? ... Im only seeing 600 rpm and my job is to tell this dude when it's below 750 rpm ... Danger Will Robinson !"

Go into BIos and lower the default minimum speed of the fan to a number appropriate for your cooler's fans.

I understand your point, but i have used this fan for over a year, and just recently (last two months) this have becomed a issue. Furthermore the power of the fan varies from which angle the cable is bent in. Do you still belive this is just a safety mechanisme ?

Also, the minimum rpm for this fan should be 600 rpm

 

[navalweaponsofficer]

Yes fan is bad

 

[JackNaylorPE]

Yes, I quoted the 600 to 2000 directly from newegg web site for the Hyper 212. with a 600 - 2000 rpm range, I would set the alarm point to 550 rpm.

If the cable was broken, it wouldn't run at all. A BIOS update, reset of similar action could have initiated thi chnage oin behavior. Troubleshooting steps:

a) I would use a voltmeter and make sure you are getting 12 volts between pins 1 and 2 at the header and at the fan.

b) Keep the cable away from all other voltage sources which may cause signal interference.

c) Check the fan control scheme / curve using your MoBo utility.... try setting to full speed.

d) spin the fan blades by hand ... do they move freely (system off)

If you get thru all these w/o issue, I would by a replacement fan ... if it turns out the fan is fine, then you will simply have to fans on your cooler and better temps.

 

[HeyconPc]

Yes, I quoted the 600 to 2000 directly from newegg web site for the Hyper 212. with a 600 - 2000 rpm range, I would set the alarm point to 550 rpm.

If the cable was broken, it wouldn't run at all. A BIOS update, reset of similar action could have initiated thi chnage oin behavior. Troubleshooting steps:

a) I would use a voltmeter and make sure you are getting 12 volts between pins 1 and 2 at the header and at the fan.

b) Keep the cable away from all other voltage sources which may cause signal interference.

c) Check the fan control scheme / curve using your MoBo utility.... try setting to full speed.

d) spin the fan blades by hand ... do they move freely (system off)

If you get thru all these w/o issue, I would by a replacement fan ... if it turns out the fan is fine, then you will simply have to fans on your cooler and better temps.

So if the cable was even slightly broken it wouldnt spin at all. And I still believe the fact that there is different speeds depending on how i bend the cable proves that it is broken?
And for the troubleshoot guide, i dont own a voltmeter so it might be hard.

 

[JackNaylorPE]

a) They are not expensive and if you are going to be building PCs, will need one sooner or later. They also have a continuity tester which would tell ou if cable broken.

b) How you bend affects what voltage sources are near

c) What happened here ?

d) What happened here ?

 

[navalweaponsofficer]

Yes it is broken the fan is bad. The amount of current that can flow through a wire directly coralates to the wires size. If all but a couple strands are broken the fan will not be able to pull enough power to spin at proper speed because ristance is too high. When u bend the wire it connects the broken strands allowing more current to flow.

You can isolate the broken wire and splice it or solder it and splice it. It will be the power or the ground wire that is the problem

 

[HeyconPc]

a) They are not expensive and if you are going to be building PCs, will need one sooner or later. They also have a continuity tester which would tell ou if cable broken.

b) How you bend affects what voltage sources are near

c) What happened here ?

d) What happened here ?

C) No different

D) Spins shortly

 

[navalweaponsofficer]

a) They are not expensive and if you are going to be building PCs, will need one sooner or later. They also have a continuity tester which would tell ou if cable broken.

b) How you bend affects what voltage sources are near

c) What happened here ?

d) What happened here ?

a) They are not expensive and if you are going to be building PCs, will need one sooner or later. They also have a continuity tester which would tell ou if cable broken.

b) How you bend affects what voltage sources are near

c) What happened here ?

d) What happened here ?

C) No different

D) Spins shortly

The bending of the wire does not change the voltage supplied through the wire. The bending of the wire is increasing the internal resistance of the wire because it is connecting the broken strands inside the insulation. An increase in internal resistance does cause VDroop but it is not because it not being supplied enough voltage and current it is because of the broken strands inside the insulation (it is like putting a resistor in the middle of the wire). The fan itsself is likely fine it is the flow of power that is causing the problem power has to go in and out of the fan the problem is that there are broken strands in the power or ground wire increasing resistance of the wire.

You can try isolating which wire is causing the problem
1. Assuming a four wire ribbon wire separate each wire so that they are no longer connected to eachother
2. If the fan still works after separating the wires (it may not work because you may break the last remaining strands) bend the wires on at a time to see which one is causing the speed change that will be the bad wire splice or solder it fixed then isolate the location of the break
3. if it no longer works use a multimeter and test the continuity of the four wires. the wire with no continuity is the bad wire.

Your manual fan spin is normal

 

[HeyconPc]

a) They are not expensive and if you are going to be building PCs, will need one sooner or later. They also have a continuity tester which would tell ou if cable broken.

b) How you bend affects what voltage sources are near

c) What happened here ?

d) What happened here ?

a) They are not expensive and if you are going to be building PCs, will need one sooner or later. They also have a continuity tester which would tell ou if cable broken.

b) How you bend affects what voltage sources are near

c) What happened here ?

d) What happened here ?

C) No different

D) Spins shortly

The bending of the wire does not change the voltage supplied through the wire. The bending of the wire is reducing the internal resistance of the wire because it is connecting the broken strands inside the insulation. An increase in internal resistance does cause VDroop but it is not because it not being supplied enough voltage and current it is because of the broken strands inside the insulation (it is like putting a resistor in the middle of the wire). The fan its self is likely fine it is the flow of power that is causing the problem power has to go in and out of the fan the problem is that there are broken strands in the power or ground wire increasing resistance of the wire.

You can try isolating which wire is causing the problem
1. Assuming a four wire ribbon wire separate each wire so that they are no longer connected to eachother
2. If the fan still works after separating the wires (it may not work because you may break the last remaining strands) bend the wires on at a time to see which one is causing the speed change that will be the bad wire splice or solder it fixed then isolate the location of the break
3. if it no longer works use a multimeter and test the continuity of the four wires. the wire with no continuity is the bad wire.

Your manual fan spin is normal

I am assuming the fan is broken, and i will replace it. Do you believe the fan Noctua NF-F12 PWM will fit the heatsink from the hyper 212 evo, and is it a fairly good replacement?

As I have no knowledge on splicing and such, i find these to be the easiest, and still a cheap soloution.

 

[navalweaponsofficer]

For the most part any 120mm PMW fan will work, just make sure that the replacement fan moves as much or more air (CFM) as the original fan. Ensure you remove the clip on brackets from the CM212 fan so you can put them on the new fan. The CM212 used to (it still may) come with a second set of brackets for the fan so you can do a push pull setup on the cooler (one fan on each side of cooler) if you get two of the same fan you can set it up this way.