RV Open Roads Forum: General RVing Issues: Fan in fuse Apr 24, 2014When hooked to shore power, the fan in the fuse/breaker box immediately comes on and remains on. Is this normal? and might as well unplug the RV to stop the battery from overheating before it is fixed. > Fan in fuse panel constantly running.. Fuse Panel Fan - Problems, Solutions & After Market Outback RV Owners Forum. Fuse Panel Fan - posted in Problems, Solutions & After Market: Posted on D&T but figured I'd ask here as well. Any idea why my fuse panel "fan" would be running while very little power is being drawn? The only thing "on" in the TT is smoke detectors and batteries. No fridge, water heater, lights or anything else.