Customer had been gone for six days. Air-conditioner iced up. I found air filter very dirty, causing icing of coil. Coil is still Iced up. Found condenser coil very dirty! I cleaned condenser coil while evaporator coil thawed out. Checked Freon level. Checked voltage & amp draw of motors. Suction: 125 (43). Suction line: 50. Ambient: 92. Liquid line: 106.