Dear Experts. We get convergence problem in Type 56. According to our investigation source of error is sudden increase of ventilation flow in our schedule and ventilation air temperature about 3 K lower then room air temperature. We would like to keep this control schedule and the same time avoid convergence problem. So far we have increase indoor air heat capacity in zones (five times), it help a bit. Do you have any other ideas what we could do? Should we change something in Control Cards? Best, Karol --------------------------------------------------------------------------- Karol BANDURSKI Ph.D, Assistant Professor Faculty of Environmental and Energy Engineering Division of Heating, Air Conditioning and Air Protection Poznan University of Technology https://www.researchgate.net/profile/Karol_Bandurski *** dr inż. Karol BANDURSKI, Adiunkt Wydział Inżynierii Środowiska i Energetyki Zakład Ogrzewnictwa, Klimatyzacji i Ochrony Powietrza Politechnika Poznańska |