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prebid...trnsfer function

Hi trnsys!
Now I simulate some building...and find some error.


What is the covergence discriminant?
How can I know the layer value is right before simulate?

This is inf file..


 ***** WALL TRANSFERFUNCTION CALCULATIONS *****


             ---------- WALL TYPE GROUND              ----------

      THERMAL CONDUCTANCE, U=     0.16667 kJ/h m2K; k-Wert=     0.04593
W/m2K

                       TRANSFERFUNCTION COEFFICIENTS
  K            A              B              C              D

  0       1.5138795E+01   -6.5369932E-13    1.5138795E+01    1.0000000E+00
  1      -3.4507338E+02    1.5370132E-11   -3.4507338E+02   -2.2208193E+01
  2       3.8109833E+03   -1.7531030E-10    3.8109833E+03    2.3882335E+02
  3      -2.7170995E+04    1.2925395E-09   -2.7170995E+04   -1.6569834E+03
  4       1.4059095E+05   -6.9256223E-09    1.4059095E+05    8.3381019E+03
  5      -5.6272720E+05    2.8745679E-08   -5.6272720E+05   -3.2435319E+04
  6       1.8135132E+06   -9.6197003E-08    1.8135132E+06    1.0152033E+05
  7      -4.8362944E+06    2.6670990E-07   -4.8362944E+06   -2.6275220E+05
  8       1.0886001E+07   -6.2464319E-07    1.0886001E+07    5.7356123E+05
  9      -2.0991972E+07    1.2533870E-06   -2.0991972E+07   -1.0717790E+06
 10       3.5081197E+07   -2.1769148E-06    3.5081197E+07    1.7342654E+06
 11      -5.1273626E+07    3.2954145E-06   -5.1273626E+07   -2.4522112E+06
 12       6.6023455E+07   -4.3641005E-06    6.6023455E+07    3.0521263E+06
 13      -7.5349349E+07    5.0552473E-06   -7.5349349E+07   -3.3637618E+06
 14       7.6588657E+07   -5.0933065E-06    7.6588657E+07    3.2986424E+06
 15      -6.9615558E+07    4.3940207E-06   -6.9615558E+07   -2.8897967E+06
 16       5.6774470E+07   -3.1208629E-06    5.6774470E+07    2.2690814E+06
 17      -4.1658063E+07    1.6177901E-06   -4.1658063E+07   -1.6012439E+06
 18       2.7562859E+07   -2.5605009E-07    2.7562859E+07    1.0177665E+06
 19      -1.6474990E+07   -7.1414396E-07   -1.6474990E+07   -5.8370853E+05
 SUM     -5.9155251E+06   -5.4069732E-07   -5.9155251E+06   -2.0382648E+05


 ** ERROR - STABILITY CRITERIA FOR WALL TYPE GROUND               NOT
FULLFILLED

CHECK LAYER VALUES
            NO FILE GENERATED **







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