Upon arrival, I found a blank thermostat due to a popped low-voltage fuse. After further inspecting the system, I found the thermostat wires to be rubbing the exterior portion of the metal building which ate through the insulation on the copper wire causing a direct short. I sent an estimate for a wire repair and a low-voltage fuse. It was approved. After performing the wire repair and installing a new fuse the system came on. I then tested system operations and found the primary safety switch to be bad. The customer approved the estimate for a new safety switch. After install installing the primary float safety switch your system is operating properly at this time .