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Frozen Air Conditioner Multiple Issues

I am on a no air-conditioning service call. As I arrive and look at the unit I find the air handler evaporator coil is all iced up. I shut the unit off and go outside and check the AC Condensing Unit. Ice is outside on suction line until it reaches the compressor. Therefore, I pull the disconnect and test contactor, verifying it didn’t get stuck. Next I go inside and find a zoning panel. Then I find a zone damper that a wire fell off. I fixed the loose wire on the HVAC systems zone damper. I return the next day to find refrigerant charge low. I leak search the unit and locate leak on condenser coil. I recharge the system for temporary cooling. Then sell them a née condensing unit.