As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
EN ROUTE, THE CREW RECEIVED AN AIR FOIL DE-ICE FAIL IN ALL MODES AND DIVERTED TO DAY. MAINTENANCE INSPECTED AND REPLACED THE 17HH EJECTOR CONTROL VALVE IN ACCORDANCE WITH DORNIER MAINTENANCE MANUAL 30-00-00. OPERATIONAL CHECKS WERE PERFORMED AND THE AIRCRAFT WAS RELEASED FOR SERVICE.