Today I arrived on site to address the reported issue with the AC system. AC System Issue Resolution: Found the condensate drain pan full of water. Cleaned and dried out the condensate drain pan. system back up and running. Upon arriving at the property. The client explained to me that the AC system on the 2nd floor is not working. The client explained that we were making repairs to the system last week. The client mentioned that he would like to know if it is related to the repair previously made last week. I proceeded to verify the tstat. The tstat is operating normally. I proceeded to check the water in the attic. I found the condensate drain pan full of water. I found that the AHU water trap was out of place. This caused the condensate drain pan to fill with water and deactivate the pen Switch safety device. I showed the client and explained the situation and the reason for this to happen. I proceeded to clean and dine the water of the drain bread. I started the system