The big differences heating loads in the EnergyPlus results (in some zones of same buildings)

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Hello, I have a problem with some results of EnergyPlus. I simulated 2 differences systems HVAC (1-GLHP with a VAV system,2- Boiler and chiller with a VAV system), but the building(Materials,schedules of lighting,temperatures,outside air ...etc) are the same. The buildings have 5 zones with the same geometries. After the simulation there are something wrong.The heating loads(in peaks) in zone 2,and 5 have a big differences in 2 buildings(I attached the results). I checked all of the details but I don't know what is the problem. Thank you for your help,