Greetings! I'm new to Class A campers, with some hands-on experience, willing to tackle a transfer switch swap if needed. I'm curious about the cause of a loud banging noise in the transfer switch during winter. I had the camper plugged into my house to maintain battery charge. Unsure if this is recommended. Recently, in cold weather, the camper experienced the loud banging noise. Seeking advice since this is unfamiliar territory for me. The camper is a 2010 Fleetwood Bounder Classic 35S on a Workhorse chassis. Any assistance would be appreciated.