First and foremost hello everyone! I just got a (new to me) 2007 2800 BHS. The previous owner doesn't seem to know much about it, So I have some questions. Now before everyone crucifies me I have spent hours reading this forum looking for answers. I know the red switch in the closet to the right of the entry turns on the Electric side of the hot water heater, what I cant find is what the switch (normal 110v looking house switch) does. Anyone have any insight? Also.... In the master bedroom there are four switches on the wall. 3 of them are labeled one is not. Looks like the three that are marked turn on lights in the shower area, the bedroom and the stool room. So whats the 4th one for.... And is the powered vent fan really not on a switch??? That's all for now. Thank you in advance for your help!