We have a high pitch whine in our Rockwood Signature, neither the wife or myself can hear it. (age is good for somethings) It does not seem to bother the dogs, however, the grandkids and younger people hear it no problem. I traced it to our propane leak detector, located near the converter. I take the fuse out for the detector, no whine. Put it back in and the whine is back. Test was done without the kids knowing the fuse was in or out.
DRINK COFFEE--do stupid things faster and with more energy ! Rockwood 5th wheel, Signature Untralite, 8244S
Tow Vehicle: Ram 3500 6.4 litre Hemi.