air conditioner

The previous answer is possible, but the most likely cause is the front orifice tube is clogged and needs replacing. Both front and rear AC units use the same refrigerant, but uses different orifice tubes. Therefore the most likely cause is the screen on the front orifice tube is clogged. I have the same problem. My friend repairs AC on his job and he is assisting me now. I do agree with others to get a professional to replace the tube.