I'm very clueless on our c-bus/clipsal system so I likely won't even ask this question intelligently. It appears our system is not connecting properly to the c-bus network. We have several relays that are flashing as if there is an error. Our electrician thinks we might have a bad connection somewhere but he has never worked with a c-bus system. Is there a simple way to determine if our c-bus network is functioning properly before he starts checking every device for a faulty connection?