Closely check the wiring to verify that it exactly matches the wiring diagram. The wiring diagram is located in Wiring information of this manual.
Closely check the wiring associated with non-Johnson Controls components for correct installation. Consider disconnecting any non-Johnson Controls components before you begin troubleshooting the hardware.
The most common problem with installed hardware is incorrect wiring. This problem may exist on initial installation, or it may occur when modifications to the system take place.