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Ideal Loads Air System doesn't meet thermal comfort requirement

Hi, I'm having this problem with Ideal Loads Air System.

Everything seems all right, it's an office building, HVAC system is available when there is occupancy. I had "Zone Thermal Comfort ASHRAE 55 Simple Model Summer or Winter Clothes Not Comfortable Time" output. And it shows it's still uncomfortable even the HVAC is on.

What did I do wrong, why the ideal loads air system didn't meet the loads?

I will be very thankful if anyone can tell me the answer. Thanks!