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[EnergyPlus_Support] Low DX coil leaving air temperature warning.

I am getting the following warning, and I can not seem to locate its source.  The hourly reports do not indicate that coil is at full load at any point during the hour in question.  This unit has a high outside air load that is driving the coil inlet temperature down at times.  Does this warning get generated whenever the entering coil temperature is low regardless of whether the coil is cooling or not?

** Warning ** Coil:Cooling:DX:SingleSpeed "CLASSROOMB-ZONE PTAC COOLING COIL" - Full load outlet air dry-bulb temperature < 2C. This indicates the possibility of coil frost/freeze. Outlet temperature =   1.20 C.
   **   ~~~   **  ...Occurrence info = Columbia Metro AP SC USA TMY3 WMO#=723100, 01/18 13:00 - 14:00


Possible reasons for low outlet air dry-bulb temperatures are: This DX coil
1) may have a low inlet air dry-bulb temperature. Inlet air temperature = 20.111 C.
2) may have a low volumetric air flow rate per watt of cooling capacity. Check inputs.
3) is used as part of a HX assisted cooling coil which uses a high sensible effectiveness. Check inputs.
   *************
   ************* ===== Recurring Error Summary =====
   ************* The following recurring error messages occurred.
   *************
   *************  ** Warning ** Coil:Cooling:DX:SingleSpeed "CLASSROOMB-ZONE PTAC COOLING COIL" - Full load outlet temperature indicates a possibility of frost/freeze error continues. Outlet air temperature statistics follow:
   *************  **   ~~~   **   This error occurred 23 times.
   *************  **   ~~~   **   Max=1.952314  Min=0.474338
   *************
   ************* EnergyPlus Completed Successfully-- 30 Warning; 0 Severe Errors; Elapsed Time=00hr 00min 13.61sec



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