I am a newbie in this C4 world. I have HC 800 and 300. Recently, I found my HC 300's power and other lights were gone except the very faint, red light on the wifi indicator. When I looked at the registered controller on my Composer HE, it was only HC 800. My dealer told me that HC 300 is a slave controller.
I am planning to replace the HC 300 with the used one I purchased on ebay. In this case, do I have to have the newer HC 300 reprogrammed? To avoid the reprogramming, should I replace the power supply unit only?
Thanks,
OB