whymelord wrote:
Describing the problem: it is the well known problem of the fan running almost constantly with little load. And after a couple of days it sounds like it's revving up and down at low load. I may have mistakenly said it's a thermostat problem as now that I think of it the fan activation is based on converter DC load, correct.
I have a WFCO 8955 in my current Freedom Express and had one in our previous KZ Spree ... based on your description I'd suggest your converter fan is working just as it should. You'll likely never see this converter go into a bulk charging mode at it's rated 14.4 volts but few of us who own this converter see this anyway so as long as it's otherwise outputting I'd forget about it and only swap it out for something better if the WFCO actually fails.