Cv controller – Auto-Zone Control Systems Auto-Zone CV & CV-EX Systems Installation & Operation (Version 01C) User Manual
Page 110
Section 4
Auto-Zone CV & CV-EX
4-32
Start-Up and Troubleshooting
CV Controller
The following is a guide to assist in troubleshooting the CV controller and its associated
CV controller problems.
CV Controller Troubleshooting Checklist
Begin troubleshooting by locating the general problem in the list below.
Space is too warm
Is cooling locked out due to outside air temperature?
Is cooling short cycling due to low supply air temp cut-off?
Is space calling for cooling?
Is supply air temperature indicating cooling?
Is Economizer enabled?
Is Economizer opening?
Is cooling being held off by its minimum off timer?
Is the rooftop unit running? Check internal safeties.
Is the LED blinking an error code? See Table 4-1.
Space is too cool
Is heating locked out due to outside air temperature?
Is heating short cycling due to high supply air temp cut-off?
Is space calling for heating?
Is supply air temperature indicating heating?
Is the rooftop unit running? Check internal safeties.
Is the LED blinking an error code? See Table 4-1.