Arrived on site for no cooling. Air handler was not on. Make sure the thermostat was calling for cooling. Went to go check on the air handler and saw that the fuse was blown. Replaced a fuse and fuse was blown immediately. Went to the condenser and unwired the c and y wires from the air handler to condenser. Went to the air handler and took off the C and Y wires of the condenser and then checked for continuity. Multimeter not detect anything, rewired everything together. What's the condenser and replace a contactor. After replacing the contactor replace the fuse for a new fuse and powered on the air handler, air handler and condenser turned on normally. Inform the customer and customer acknowledged.
