What was found
CLT FLT 800 CLT TO GIG. DURING CLIMB, LT ENGINE BLEED OVERHEAT LIGHT ILLUMINATED. QRH PROCEDURES WERE USED, PROBLEM RETURNED. DUE TO ICING EN ROUTE, RETURN TO CLT. EMERGENCY DECLARED AND LANDED WITHOUT INCIDENT. MAINTENANCE REPLACED THE LEFT FAN AIR TEMPERATURE SENSOR TS101. VENDOR SHOP FINDINGS: PRIMARY FAILURE: PROBE AND CRANK ASSY PROBE INNER ROD WELD BROKEN BEYOND CMM LIMITS, BINDING.