I was called to a customer's home to check on an AC unit that wasn't cooling. Upon inspection, I found that the unit was blowing air but not cold air. I checked the condenser and found that it wasn't running. I opened the panel and found an error code L6 indicating a start-up lockout. I looked up the error code and found that it was due to a low capacitor. I replaced the capacitor and secured it. I then applied power and checked the unit's operation. The AC unit is now functioning properly.
