Weird air temperature results

Hello everyone,
I tried to run the energy simulation for a model using DOAS and make a simple indoor air temperature analysis. It seems something wrong and I can not find what. I set the cooling set point around 25 C. But some zones cool down 18C for hottest day of a year which could be due to the high amount of ventilation in each zone. ( as u can see in the picture).
I have also checked the open studio and I have realized that the setpoint at outdoor high temperature is 15,5C. Does anybody have idea what the problem is? Is there any way to change the temperature in the OpenStudio and run the simulation?