I just took my new fresh off the line (1 1/2 weeks ago) Sundance 3200RE out for it's maiden camp trip the last 5 days. The fan on the refer seems to be running most of the time. The out side temps have only been in the high 70's. The fan was even running when I went to bed when the temps were 55-60. The problem is that I am seeing the 2 batteries drained fairly fast. Is this fan needing to be on that much? If so, that is going to be a big problem. Can I rewire to manually turn the fan off and on?