As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT NR 3277 - EN ROUTE, THE LEFT ENGINE INTAKE LIGHT AND VALVE CYCLED ON AND OFF. THE AIRCRAFT RETURNED TO MSP DUE TO EN ROUTE WEATHER. MAINTENANCE REPAIRED A BROKEN WIRE AT THE CTM CONNECTOR FOR THE INTAKE HEAT VALVE. THE INTAKE HEAT VALVE WAS ALSO REPLACED AS A PRECAUTION. ALL SYSTEMS OPERATED SATISFACTORILY. (M)