Hello Community, i have trouble with calculating 3D buildings with TYPE 56 using small time steps, for example 0.1 hr, 0.2 hr, 0.25 hr. (but works fine with 1 hr). The Error Message comes together with two warnings, see below (for 0.1). With different time steps (0.2, 0.25), the same error occours earlier or later. I use the Meteonorm Weather Files, but this also happens with TMY2. Maybe anybody has some experience with that? ---part of *.lst-file--- *** Fatal Error at time : 1089.300000 Generated by Unit : 56 Generated by Type : 56 Message : Internal error in solar radiation distribution (sumsitot) of 30.305 % at time 1089.30wave length band no.3 1:total solar, 2:visual solar, 3:non visual solar *** Warning at time : 1089.300000 Generated by Unit : 36 Generated by Type : 15 Message : The calculated horizontal diffuse radiation exceeded the horizontal extraterrestrial radiation and was set to the extraterrestrial for 56 timesteps during the simulation. *** Warning at time : 1089.300000 Generated by Unit : 36 Generated by Type : 15 Message : The total horizontal radiation calculated from the sum of the beam and diffuse horizontal radiation exceeded the horizontal extraterrestrial radiation and was set to the extraterrestrial. The beam and diffuse radiation on the horizontal were then calculated base on their original ratios for 325 timesteps during the simulation. ---end part of .lst file--- Thanks alot, Simon |