Figure out why the coil outlet temperature is so cold. I believe the first error shows coil inlet temperature, so check to see if it is reasonable. A DX coil usually has about a 10C delta T across the coil, so the inlet must be around 10C. Why is the coil operating when you already have 10C air available to supply to the zone? Is this ZoneHVAC or AirloopHVAC? What system type are you using? Is an economizer available? etc, etc.
On 3/19/2012 11:33 PM, CleanTech Analytics wrote:
Dear List,Any advise on how to approach this error?Thanks
************* ===== Recurring Error Summary =====************* The following recurring error messages occurred.************************** ** Warning ** Coil:Cooling:DX:SingleSpeed "BLOCK1:ZONE1 AHU COOLING COIL" - Full load outlet temperature indicates a possibility of frost/freeze error continues. Outlet air temperature statistics follow:************* ** ~~~ ** This error occurred 3849 total times;************* ** ~~~ ** during Warmup 0 times;************* ** ~~~ ** during Sizing 0 times.************* ** ~~~ ** Max=1.999729 Min=0.701477*************
Jeremiah D. CrossettCleanTech Analytics503-688-8951This document may contain valuable information proprietary to CleanTech Analytics which is private and confidential. It may not be shared, copied, stored or transmitted in any form without the prior written consent of CleanTech Analytics
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