Upon arrival I went to rooftop unit. System was very old and labels missing. I removed panels and found it iced up. The blower motor was not running.,I checked amrad capacitor and it was fine. I checked wires to blower motor and found one broken off at the contactor. It had dry rotted the terminal. I replaced terminal and fan started. I shut system down and kept running blower. They are going to keep system off till morning. I warned them of possible water dripping on ceiling do to ice melting. We discussed new units and wants to add a new. He is going to have Jim Horton come out.