As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON FLIGHT 2962, LEFT INTAKE HEAT INOP. CREW DID ORH-RESET SWITCH STILL INOP. ON RETURN APPROACH TO DTW STARTED WORKING AGAIN. AIR RETURN TO DTW. MAINTENANCE REMOVED AND CLEANED AND RESECURED LT LOWER DUCT CANNON PLUG. RAN A/C FOR 30 MINUTES ON THE GROUND. ALL CHECKS GOOD AT THIS TIME.