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Where exactly do I start looking for the problem with my old AC system? I'm getting a big blast of air coming out of the heater plenum when I blow the AC (cold or hot) on, with nothing coming out of the AC vents.
Just in case it matters, the AC compressor is running, but I have no idea if there is any "charge" of coolant in the sytem. The heater blower works really well. The AC has it's own blower though, does it not?
I was told there is a vacuum module/switch that controls this function to switch it away from the heater vent system. If so, where is this?
I hope I'm not asking too dumb a Q..I'm pretty ignorant on AC
Thanks!
Just in case it matters, the AC compressor is running, but I have no idea if there is any "charge" of coolant in the sytem. The heater blower works really well. The AC has it's own blower though, does it not?
I was told there is a vacuum module/switch that controls this function to switch it away from the heater vent system. If so, where is this?
I hope I'm not asking too dumb a Q..I'm pretty ignorant on AC
Thanks!