Why would you see frozen material or ice on your Air-Conditioning System? Low on refrigerant, maybe! But, in this case the owner allowed the air filters to get so dirty the blower motor ripped up the fan belt, which in turn shut down the air flow all together! No air...
A frozen Air-Conditioning Unit is common! Several common issues my cause your air conditioner to have frost on the copper refrigerant lines on the outdoor unit or on the indoor unit. Why? Here is a small list: Filters are dirty and the air flow over the evaporator...