Today I arrived on site to diagnose the issue with the Trane AC system in the attic. AC System Issue: Addressed a non-functioning AC system for the entire house. Fault Identification: Discovered the 3rd zone common wire was disconnected. Resolution: Reconnected the 3rd zone common wire. Recommended including the cap and contact to be replaced. When arriving at the property, The client directed me to the attic where the AHU trane is. The client explained to me that the system has been showing intermittent failures. I proceeded to check the AHU in the attic. I found the common wire disconnected from the tstat of zone #3. I showed the client the situation. I put the wire in its place. I put the system into operation. The system started working. I proceeded to check the condenser unit. I found the starter cap of the condenser unit not correct for the capacity of the motor fan and the compressor joined. I explained to the client that the starter cap must be replaced by the correct lime. I