A/C drawing air up sink drain.
Whenever we turn on the A/C, it's just a matter of time before the whole RV STINKS. It appears the A/C is pulling air up the waste pipes connected to the double sink. Under one sink there is a drai...
Forum Discussion
First thing I would do is take the AC cover off on the inside and look around up there.
Is the air output connected properly to the ducting or is it blowing some air into the area between the ceiling and roof like mine was.
Next I would take a bright flash light and see if the evaporator coils look like they are growing mold.
Also I would check to make sure the AC drain was working fine (not clogged) on the top. Water should be dripping off the back of the roof in warm weather when the ac is running.
I had a Ford pick up that made a nasty smell with the air on and it was a moldy evaporator coil.
Also Gene's idea is plausible, I think that could be run down by sniffing the individual vents/outlets.
On second thought, forget about all of the above that I suggested until you do a couple of things.
1. Use your sniffer and positively identify where the smell is coming from.
2. Before going thru all the gyrations about the kitchen sink, if the smell is coming from there isolate if it is coming up thru the P traps, if so it has to be bubbling. Then check the under sink air valve as described earlier, cap it off and see it the problem is cured.
3. Post back on your findings and what the smell smells like.
Is the air output connected properly to the ducting or is it blowing some air into the area between the ceiling and roof like mine was.
Next I would take a bright flash light and see if the evaporator coils look like they are growing mold.
Also I would check to make sure the AC drain was working fine (not clogged) on the top. Water should be dripping off the back of the roof in warm weather when the ac is running.
I had a Ford pick up that made a nasty smell with the air on and it was a moldy evaporator coil.
Also Gene's idea is plausible, I think that could be run down by sniffing the individual vents/outlets.
On second thought, forget about all of the above that I suggested until you do a couple of things.
1. Use your sniffer and positively identify where the smell is coming from.
2. Before going thru all the gyrations about the kitchen sink, if the smell is coming from there isolate if it is coming up thru the P traps, if so it has to be bubbling. Then check the under sink air valve as described earlier, cap it off and see it the problem is cured.
3. Post back on your findings and what the smell smells like.
