As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING CLIMBOUT, THE CREW RECEIVED AN AIRFOIL DE-ICE FAIL INDICATION. FLIGHT 4176 THEN RETURNED TO PIT. MAINTENANCE INSPECTED AND REPLACED THE 17HH EJECTOR FLOW CONTROL VALVE IN ACCORDANCE WITH DORNIER MAINTENANCE MANUAL 30-00-00. OPERATIONAL CHECKS WERE PERFORMED AND THE AIRCRAFT WAS RELEASED FOR SERVICE.