Air conditioner Carrier doesn’t cool at all – AC unit rooftop Carrier repair in San Jose, California

Customer called us and said AC unit doesn’t cool at all. I checked vents and there wasn’t any air flow.
I went to roof and found compressor running very well and totally overfreezed. I opened cover and found burned blower wheel motor. After replacing blower wheel motor – everything running perfect.
Also I replaced filters on all three units and replaced belt on another unit – because it was made pitching noise.