[Equest-users] Unoccupied fan issues

[Adam Rustige]

Hello,
         I'm having an issue with the supply fan on a packaged  VAV with reheat coming on during unoccupied periods when the space temperature is satisfied.  The heating coil has 0 output during these hours.  It's very inconsistent, sometimes it runs and other times it operates as designed.  I've looked over the schedules, changed the schedules, looked at exhaust and a variety of other items.  It does appear to happen move often during the heating season, but there is not a consistent pattern for every packaged unit.  Besides the space temperature, what else can cause a supply fan to turn on during unoccupied hours?

Thanks,
Adam Rustige


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