Travis Jordan wrote:

Richard J Kinch wrote:

It does seem paradoxical, but it is true:


http://groups-beta.google.com/group/...20eda678cc180f

But not quite for the reason stated:
" With a low charge, you only get a dribble of liquid into the evap,
which is
at too low a temp because of the too-low suction pressure "

The evaporator temperature is a result of the vaporization of the
refrigerant, not "too-low suction pressure".

It's a result of the vaporization under too-low of a suction pressure.
More to the point, it's a result of the coil's skin temperature dropping
below freezing, because of the vaporization under too low of a suction
pressure.

hvacrmedic