When i turn on the heater the air condition compressor runs. no cold air comes out of the vents. a/c light is also off. The van is a 2003 town and country limited with the 3.8 engine.
This is normal, and does two things. 1) Running the compressor for short durations keeps the parts lubricated so they don't seize up over Winter, and 2) The AC system dries out the air, preventing condensation on the inside of the vehicle.