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ACOA5XX cooling failure

Published date: 18 July 2020

 

                                                                                                                                                    

Issue:
This dcoument describes the issues that can cause an ACOA5XX cooling failure. 

Product line:  
ACOA5XX. 

Environment: 
All Serial Numbers.  

Cause:  
Supply Air Temperature> 90 F and Cooling Output < 4 kW. 

Resolution:    

Supply Air Temperature> 90 F and Cooling Output < 4 kW 

OA will shut down 

OA will restart after 5 Min 

If conditions still exists after 60 seconds OA will shut down. 

tf = 300oF* sec/ tsup - 90oF

Where 

Tsup is the average supply air temperature in oF


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