I have some exhaust fans and fluorescent light fixtures that I'm trying to switch with a -4R module and they are not responding. The loads just stay on and will not turn off. I have checked the programming to make sure I indeed had a -4R in the program for those circuits and everything seems to be OK. What can be the cause of this. I have them set as "switched fan" and "switched fluorescent" respectively. Anybody have any suggestions ?