If you are putting it on manually at the thermostat fan switch, doesn't it
seem like it has to be the thermostat? Either that or a board on the
system. My carrier system has a bunch of LED's and instructions on how to
read them on the inside panel. You might want to take the panel off your
1200 and see if there are any trouble shooting instructions. Either that or
time to call in a pro. If the freon hasn't been checked for a while it
might be a good idea to do that anyway.


"MARK ASH" wrote in message
news:Wc5ae.24838$Xm3.24730@trndny01...
Hi,

I have a Trane XL 1200. Fan does not come on automatically in cool mode.
No problem with heat. I haven't had a chance to put gauges on it yet. I
here freon getting to the evaporator and coils, and they frostover until I
turn on fan manually. Any ideas? All I got was stupid remarks from
alt.hvac.

Thanks
Mark