As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
TYS - ON CLIMB THE CREW GOT A ICAS MESSAGE THAT THE WING ANTI-ICE FAIL, CREW RETURN TO BLOCK AND MAINTENANCE FOUND A PUSH PIN ON A CONNECTOR LOOSE. MAINTENANCE REINSERTED THE PIN AND OPS CHECKS WERE GOOD. AIRCRAFT WAS RELEASED TO SERVICE.