Had an air conditioner go bad. Compressor wasn't running; tried everything.
Got a used Trane heat pump (that I know worked when it was unhooked from i
ts old house) and connected low voltage wires as follows:
Yellow - switched on thermostat cool mode - to yellow
Orange - reversing valve - also to yellow as never need heat from this unit
Blue - common - to blue
I realize that color codes outside of the heat pump could be arbitrary and
the common is indeed more of a grey to my eye, definitely lighter than the
blue from the unit. Am reasonably sure I got this part right (once I learne
d there was such a thing as a reversing valve).
Then hired "professionals" to connect the high voltage lines and the two co
pper pipes. Apparently they got the wiring right as the unit does power up,
is controlled properly by the thermostat and I'm sure the reversing valve
is energized as removing and replacing the orange wire trips a relay inside
Thing is, the previous workers that removed the unit made really bad cuts a
nd my hires soldered (yes soldered!) it to my pipes as best they could. The
y had a leak initially, but came back and supposedly fixed the leak with th
e aid of some Dawn liquid. I suspect they've botched it again.
So the fan is running, the compressor is running (constantly of course), th
e thermostat controls it all, but the liquid line is nowhere near cold (coo
l at best) and the temperature coming out of the vents is basically the sam
e as ambient. The suction line is neither hot nor cold. IIRC, it did get fa
irly warm at one time, before I connected the reversing valve wire. Had to
Google that myself, as the "techs" apparently forgot about all about it (ju
st left the orange wire hanging).
Have never gotten cold air out of the vents. They always tell me it will ta
ke a little while, but the air temperature stays steady. Does this sound li
ke they have managed to leak at least a portion of the freon out again? Not
sure what else it could be as I know the unit did a good job for the neigh
bors. Their layman's opinion is that it is not fully charged with freon.
What else could it be? Any suggestions appreciated. Would hate to have to c
all in a "real" professional as it seems like we are almost there.