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#4 Hysteresis

open
nobody
None
5
2009-01-28
2009-01-28
Bartosz Cisek
No

On my T41 temp reading are OK but fan turns on and off when temp oscilates betwen 47C an 48C. I have defined in INI file levels like that

level 46 0
level 48 1

It's a but or do I miss something? :)

Discussion

  • SteveM
    SteveM
    2009-02-04

    This is a bug as far as I can tell. I recompiled the project in VC Express and it worked fine (was very easy to do - no mucking around). Around line 240 of "fanstuff.cpp" was the following line:

    // && this->SmartLevels[i].fan>fanctrl

    I removed the comments, which basically revert this functionality back to the way it was in 1.8. No more cycling every 2 seconds! Basically this forces the fan control logic to wait until the fan temp goes below the previous level's temp before setting it back to that mode.

     
  • SteveM
    SteveM
    2009-02-04

    Also - if you don't want to recompile the source code, just download version 1.8. It doesn't have this problem and there don't seem to be any real bug fixes that would affect performance between 1.8 and 2.0.