"Richard J Kinch" wrote in message
. ..
Travis Jordan writes:

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

No. Vaporization occurs from heat transfer, not temperature. Heat and
temperature are two different things, which most people confuse.

Look at the saturation pressure-vs-temperature tables.

This is Turtle.

there is a point in the Back pressure and head pressure points where at this one
point that the evaperator will freeze up on low freon. In the Louisiana area it
is on R-22 at 38 to 42 psi back pressure and other parts of the country up as
high as 50 psi back pressure. A system can freeze up on low freon but usely only
at one temp it will do it at.

TURTLE