Code displayed on thermostat missing 240 V at outdoor unit. Found voltage loss at older breaker style disconnect located underneath back porch. At this time so the unit can operate wiring has been jumped around disconnect. System is now operating normally and safe to operate. Estimate for installation of new high-voltage disconnect will be provided. If approved office will schedule return for installation of non-fused style disconnect. Due to mounting on Rockwall hammer drill is required as well as wall anchors.