You can know if the system is functioning by the green light in the relay panel. If there is no light that means that 12-volt AC power is not being supplied, so you gotta do the following to make your CentraLite Elegance Lighting functional
Case 1: See to the circuit breaker supplies for 12-Volt Class II transformer.
Case 2: If the transformer has power of about 110-120 volts AC but does not supply for 12-volts AC then it is broken and should be replaced.
Note: Make sure that you replace the transformer with a certified electrician, as the relay panel has high-voltage electricity which could even cause death.