ACOA5XX cooling failure

Issue:
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. 

t_f = 300^oF* sec/ t_sup - 90oF

Where 

T_sup is the average supply air temperature in ^oF