for more detailed error message -

** Warning ** In calculating the design coil UA for Coil:Cooling:Water THERMAL ZONE: A013 COOLING COIL
**   ~~~   ** the outlet chilled water design enthalpy is greater than the inlet air design enthalpy.
**   ~~~   ** To correct this condition the design chilled water flow rate will be increased from 2.49319E-006
**   ~~~   ** to 6.01354E-006 m3/s
** Severe  ** Calculation of cooling coil design UA failed for coil THERMAL ZONE: A013 COOLING COIL
**   ~~~   **   Bad starting values for UA
**   ~~~   **  Coil design UA set to 245.887736 [W/C]

Any ideas on how to fix this?