RE: [VAL] A/C Help

["Tom" <tmeeker@xxxxxxxxxxxxxxx>]

Pete,

Are you positive that the thermostat works correctly?  Air conditioners have
an expansion valve that works the thermostat.  When the system is working
right the thermostat tells the compressor when to come on, how long freon
should be pumped through the expansion valve, etc.

Have you checked the freon pressures on both the high and low sides of the
compressor?  This may surprise you but an air conditioner that is just a
little low on freon will continue to blow cold air; and a unit that has too
much freon will not cool at all.  That might not make total sense to you but
the reason is that the freon has to be able to expand and in doing so it
cools the evaporator through which the fan blows incoming air.  If there is
too much cooling (as in your case it seems) the water that is built up on
the coils of the evaporator will actually freeze causing even more problems
with drainage, air movement, etc.

If your unit is cooling that's a plus.  If the thermostat IS also working
that's another plus.  If the freon levels are what they should be that's
another plus.  And you've already replaced the blower motor which added to
the plus side of the column.

All in all, to me it "sounds like" the thermostat is having a hard time and
may be "stuck" on the cold setting and/or in addition to that the freon
level may be low.  Remember, lower volume of freon will still cool somewhat
while too much freon will not cool much at all due to the fact that there is
not room in the system for it to expand like it should.

When you find out what the real problem is please let me at least know what
you did to fix this.  

Those are my best guesses. ;)

Tom
WBCCI 5303