"lp13-30" wrote in message
...
Hi CB I posted a question on a Trane heat pump problem (DSS). in HVAC
and haven't gotten any real answers yet. I know that you are as
knowledgeable as anyone in the business about this problem. If there is
anyway you could help me, either by EMail, or in here or HVAC I would be
very grateful. I realize that an HVAC question in the other group would
be considered OT now, given the recent climate in there. Thanks Larry


Go Fish offered what would be the best way to go about this.
Trane, a line we will be offering isnt my favorite line, but they are not so
bad. Problems can happen with any unit.

What I would suggest is to try your damndest to make sure its not a dead
mouse, or rat in the ductwork, or that they dont have kids that have hidden
something in the return if its at floor level (in the floor, or wall low)

If you can find nothing, pull the blower, and coil, and chem wash, using a
good foaming cleaner. Clean the entire blower housing and cage. I tend not
to always remove the motor, but insure that its been blown out with CO2 or N
before even thinking of putting power back to it.
Depends on if the shafts rusted to hell and back or if its still in like new
shape..if it is, take the motor out, but check it for mouse parts...be
suprised where those little ****ers can get. (had one get in this
morning...ask me how I know..LOL)

Blow the condensate drain, and be sure to put some antibac tabs, or strips
in the pan. Doubt thats the problem, but might be, and if the drain is ran
into a septic system like so many old ones are, either put a gravity feed on
it, and cap the old line, or pump it out.
the fact that they claim its started recently, makes me really lead to
either a septic feed drain that the P or S traps finally dried out, and
sucking in sewer gas, or a dead animal.


Also suggest a good deoderant and sanitizer for the case insulation. IF you
see ANY signs of mold on it (take a white cotton glove, or sheet and wipe
over the insulation in various places, comes back brown, or black fuzzy, you
got issues) you will need to sanitize the case insulation and find out why
its growing. A UV in this senario is a must, prefer two...one in the return
and one in the supply, and it need not be shining on the A coil, but would
suggest it on the return end at least.


Gotta ask...did you guys install it, and if so, did you replace or modify
the ductwork at the same time?
Did you install it based on a manual J or based upon the old units size?
Whats the current fan speed? Have you taken an IAQ sample and had it
checked? Have you ran a mold sample swab off the coil and surrounding areas?
(if you find mold in the unit, DO IT)

Got lots of questions, but no real answers till you check a few more things
and really, really, really look for a dead small animal. I had one like this
that was driving me bonkers, and I found a tiny grey mouse, that had thought
he could outrun the cage, on the motor side...if the unit had not been
installed just that month, I would have looked there since I would be
cleaning the cage anyway, but this little fart had either come up the drain,
or got in while we were installing the unit.....either way...it was an
interesting find.