View Full Version : Err0 (Sensor Failure) on Prom
CodeRed
05-05-2003, 12:51 AM
I just got err0 on my prom ... argghh I hope I didnt break it.
This happened when I enabled the CPU disconnect function on my NF7-S. This makes the temps drop real low. Even at 2.7gig 1.9V it drops below -54 deg C whilst idling. This is when the err0 kicks in and sounds a siren, then shutdowns the machine. My solution it to run the CPU at a minimum of 2V and have prime going in the background, then the temps come up to -45 to -43 deg C.
I never thought Id see the day when my temps were too cold or is my thermal sensor stuffed????
R404a in the prom BTW.
JCviggen
05-05-2003, 02:10 AM
Thats no sensor failure, its simply too low of a temp for the chip controller. I've had that too in the past ..... just dont let it get too cold thats the only solution ...
please download FAH and run it for the xtreme team :) your temp problem will be solved AND you're doing something useful with your CPU cycles meantime :)
CodeRed
05-05-2003, 02:39 AM
Is there any way to disable this. I am sure I could make use of the extra cooolll.
hehehe I am SETI man myself.
DaGooch
05-05-2003, 03:42 AM
Set P25 to -55 to -60 instead of -50 which is the stock setting for the Prometeia.
CodeRed
05-05-2003, 04:36 AM
Originally posted by DaGoochMeister
Set P25 to -55 to -60 instead of -50 which is the stock setting for the Prometeia.
Ive done that, it stops the sirens at -50. Is there anything else I need to set?
Could you not set the low temp to lower than -50?
Oh, and would you be able to post how you re-charged with R404a? Did you have to do it at load? Ho exactly did you do it?
CodeRed
05-05-2003, 03:31 PM
I set the value to -55 IIRC. It posts fine but when I drop the CPU load too low it gets too cold and the sirens go off, and then the machine reboots.
As JC said its a limitation of the controller. Chip-Con probably built in some fail safe mechanism in case of thermal sensor failure, and the controller thinks a -54 degree reading is a result of this failure.
Its not really a big deal, just means I should always leave the CPU Disconnect disabled and the temps rise to about -49 to -46 deg C when idling @ my everyday speed (2700 @ 1.9V).
Glad it's kinda sorted!
Codered, would you be able to write up a small guide to R404a modding? Please! I'm ready to do it, just want to know how 100%!
CodeRed
05-05-2003, 04:36 PM
OK, I'll give it a shot tonight, but really there aint much you have to do. It would also be better if someone who has also done the cap tube mod (such as hipro5, JC?, etc etc) would do a writeup on this. It would be more complete that way.
Ok, cheers Codered!
Did you have to re-charge it whilst at full load? I think I read that in your thread about the R404a mod!
CodeRed
05-05-2003, 05:44 PM
My first boot was done @ 2600 MHz 1.85V. After 5 min I rebooted at 2600 MHz 2.25V and we styarted tweaking. Then when we were happing that it was working really well, we did the final tweaking using 2850 MHz 2.25V.
If the controller is an NTC probe type, then its probably only good to about -50c anyway. If you get to low it just might not be able to cope. Try lowering P25 as far as it will go.