Manual says they need to be cleaned of debris during annual maintanence. Remove vent panels from the exterior and vacuum out. You might have something living in your furnace. We had mud wasps trying to build a nest in our Elite.
__________________
2014 Mobile Suite Estates 38RSB - custom home
2014 F450 KR CC 4x4 ...... his office
2015 Lance 1172 - traveling Motel (solar and generator)
Working Fulltimers since 3/2005
|