"Justin" wrote in message
...
Our old thermostat decided to quit so I am trying to replace it with a
"Lux" Brand from Lowe's.
What's happening it the Heat will turn on if we set it to heat and raise
the temp, but the Air conditioning won't activate mo matter what.
Once when I turned the switch to FAN the circuit breaker cut power.
The Central air unit is fairly old... Here is a picture
http://img139.imageshack.us/my.php?image=img0119ib4.jpg
Here is a picture of the thermostat's innards and how we have it wired:
http://img528.imageshack.us/my.php?image=img0120fz1.jpg
Hopefully I won't get flamed as badly as I did in the other group.
The model is CAG1500
there are five wires: white, yellow, green, blue and red.
If you touch the blue thermostat wire to the yellow wire, your condensing
unit should come on. If you touch the blue wire to the green wire, the
blower should come on. If these things don't occur, you have a problem
somewhere other than the thermostat