1543 TIMS show A/C 2 Temperature 60 Degr ~~~~~ 1543 TIMS show A/C 2 Temperature 60 Degrees.  1543 micro controller unit replaced - Done. Security & function check - OK. Temp. 24'C. 1543 Micro controller unit S/N : OLD : 841236 NEW : 841990  Aminur/Isam 43993