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It appears your output variable frequency is different than the model's timestep. For example, if your Timestep is set to 4 (15 min timestep), and your output variable is set to hourly, then your output data is not capturing the intra-hourly changes. For example, your AvailabilityManager should be either 0 or 2 at all times; the fact that it's showing different values is due to the values being averaged over whatever your output timestep period is (if hourly, it's averaging the 4 data points that occurred that hour). Now if your fan is also cycling, the same situation could be occurring: fan turns on for 15 min, off for 45 min --> output variable shows 500 CFM *(15/60) = 125 cfm for that hour's output data.

It appears your output variable frequency is different than the model's timestep. For example, if your Timestep is set to 4 (15 min timestep), and your output variable is set to hourly, then your output data is not capturing the intra-hourly changes. For example, your AvailabilityManager should be either 0 or 2 at all times; the fact that it's showing different values is due to the values being averaged over whatever your output timestep period is (if hourly, it's averaging the 4 data points that occurred that hour). Now if your fan is also cycling, the same situation could be occurring: fan turns on for 15 min, off for 45 min --> output variable shows 500 CFM *(15/60) = 125 cfm for that hour's output data.hour.