I have a 2016 291RESL. It was really quiet at the campground this morning, my wife left early...jk, and I heard a fan running. I followed the sound and it was coming from the location of the furnace. My first thought was that something is messed up as this is our shakedown trip. I flipped the furnace breaker and the noise was still there. I finally got to a breaker labeled Gen 1. The noise goes away when I flipped that breaker and the lights dimmed a little. I also noticed that the fan noise increased as more lights were turned on. There is a Gen 2 breaker too. My TT does not have a generator, so that is not what the Gen stands for.
I am thinking that it is the AC to DC converter, buy my question is, Why are there two? I thought there was only one in the TT.
It's likely your converter. The more DC items you run, like lights, the harder it works. If you turn off all the DC powered items, lights, fans, etc, fan should stop in a bit. Nothing to worry about.
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2013 V 3105
2016 F350 King Ranch CC 6.7 diesel dually
captain,
"Gen" is for general outlets, vs "GFCI" for ground fault outlets. My TT came with the converter piggy-backed into the "Gen" breaker, so I agree with you and pdonoghu that it is likely just the converter fan responding to a 12V load. But a good question would be what is the 12V load that is causing the converter to work hard enough to demand the cooling fan? I presume you have been plugged in all along, so the batteries would already be fully charged. Do you have a bunch of lights on? Something plugged into the 12V socket like a laptop charger?
Furnace would have no breaker in the AC control board since it runs off of 12V. It is tied into one of the 12V DC circuits of the control panel that use a fuse.
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2012 Aspen Trail 2710BH | 470 watts of solar on the roof | 2x6V GC batteries | 1500 watt PSW inverter | Micro Air on A/C | so far strictly boondocking