When should I switch off the 12-volt switch?
After about 18 months of use on a 2012 Sunseeker 2300, I had to have the power converter replaced. I noticed the new converter makes an audible fan noise when the switch is on and is quiet when it is off. When plugged in, everything inside the RV works with the switch in either position. When unplugged, obviously, the interior electrics are all off.
My questions here is should I have always switched that 12-volt switch to the off position when plugged in to shore power? I had always left it in the on position and was wondering if that was what may have caused it to fail. Also, do the batteries charge when in the off position?
When I got my brief new unit orientation I was told that was only switched off for long term storage to prevent the batteries from draining. I store my RV beside my garage when not in use and have a power source there, therefore, keep it plugged in when not in use.
Any insight into how my coach electrics work would be welcomed. I'd like to avoid future failures, if possible, especially if this one could have been caused by my ignorance.
First RV was a 1968 Nimrod popup
Second RV is a 2012 Sunseeker 2300
nights camped 2011: 42
nights camped 2012: 48
nights camped 2013: 40