white dust coming out of AC vents - any ideas?
We noticed since the end of our last trip (early June), that when air conditioning is running, the vents seem to be spewing out this white dust, constantly.
After we got home and parked it, came out to the RV a few days later, and underneath one vent, there is a pretty large pile of this white dust, that had all come out of that one vent. Air conditioner had not been running, but still a bunch came out of that one vent. Cleaned it up, came back and checked it again today, and now there is yet *another* pile of the white dust, under just that one vent.
Filters were cleaned just before last trip, and still look pretty clean. Its pretty obvious this is coming from somewhere in the ducting, probably close to that one vent.
Since this pile keeps forming even when AC isn't running, starting to think critter infestation of some kind, but there is no other evidence whatsoever of critters being inside. How could they get up inside the vents, anyway? I did 'punch' the ceiling several places where ducts are, thinking if there was a critter, you'd hear stirring. Nothing. Looked down ducts as best I could, again, no evidence of any critters.
Its as if the foam insulation in there has suddenly started working loose and coming out in tiny pieces. Rig is 9 years old, this is first time this has happened.
Has anyone else experienced this, or might know what it is and how best to fix?
After we got home and parked it, came out to the RV a few days later, and underneath one vent, there is a pretty large pile of this white dust, that had all come out of that one vent. Air conditioner had not been running, but still a bunch came out of that one vent. Cleaned it up, came back and checked it again today, and now there is yet *another* pile of the white dust, under just that one vent.
Filters were cleaned just before last trip, and still look pretty clean. Its pretty obvious this is coming from somewhere in the ducting, probably close to that one vent.
Since this pile keeps forming even when AC isn't running, starting to think critter infestation of some kind, but there is no other evidence whatsoever of critters being inside. How could they get up inside the vents, anyway? I did 'punch' the ceiling several places where ducts are, thinking if there was a critter, you'd hear stirring. Nothing. Looked down ducts as best I could, again, no evidence of any critters.
Its as if the foam insulation in there has suddenly started working loose and coming out in tiny pieces. Rig is 9 years old, this is first time this has happened.
Has anyone else experienced this, or might know what it is and how best to fix?
