-50C alarm question

[sadcat]

Herefishy has sent my Mach 1 back after doing the complete r404 mod. He tells me that he has tested it and that I will definately have to deal with the alarm going off below -50C. I just want to check my facts. I should put a variable resistor across terminals 7 & 8. The resistor should be set at 820 Kohms. This will result in an increase in temp reading of 5C. Is this correct and am I missing anything? Thanks in advance.

[bowman1964]

Originally posted by sadcat
Herefishy has sent my Mach 1 back after doing the complete r404 mod. He tells me that he has tested it and that I will definately have to deal with the alarm going off below -50C. I just want to check my facts. I should put a variable resistor across terminals 7 & 8. The resistor should be set at 820 Kohms. This will result in an increase in temp reading of 5C. Is this correct and am I missing anything? Thanks in advance.

wait until you get it.and try it first.

it is alot differant setting there on a table than running with heat of a pc on it.get it running and on your system first.then if it is setting the alarm off,it can be recalibrated.

[herefishy]

Hi sadcat,

While your OC'ing, you'll probably be running about -40C. You may not have to listen to the alarm after the point that you boot windows.

I was testing the unit with a 160 watt condensate heater clamped to the block. I primarily charged the unit for

(1) good suction return temp to the compressor when unloaded (got fantastic compressor cooling coming back at -45C 6" from the compressor on the suctin line)

and (2) loading it up and monitoring the discharge temp (not to exceed the 158F [70C] rating of the discharge line temperature limiting thermostat.

[sadcat]

Herefishy,you somewhat under estimated your work! The only way I can run in windows without the alarm is with fbs set at 256, hyperthreading disabled, and 1.7v. So I will have to add the resistor. I hope 820 kohms is correct. The evaporator head never reads warmer than -45C no matter I do. Also the cpu temp never goes up more 3 or 4 degrees no matter what the load. Great job! Thanks a lot!

[NWEng]

I wish I had this problem!


:cool:

[herefishy]

Originally posted by sadcat
Herefishy,you somewhat under estimated your work! The only way I can run in windows without the alarm is with fbs set at 256, hyperthreading disabled, and 1.7v. So I will have to add the resistor. I hope 820 kohms is correct. The evaporator head never reads warmer than -45C no matter I do. Also the cpu temp never goes up more 3 or 4 degrees no matter what the load. Great job! Thanks a lot!

Hi sadcat,

I'm very glad that everything worked out. :toast:

Thank you

[Gary Lloyd]

Herefishy, U B da man. :D

[runmc]

mark is the #1 man with "team puss"

:toast: thanks mark