As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON FLIGHT 4296 THE CREW REPORTED THE WING ANT-ICE FAILED DURING TEST ON CLIMBOUT. THE CREW ELECTED TO RETURN. THE AIRCRAFT LANDED WITHOUT INCIDENT. THE AIRCRAFT WAS REMOVED FROM SERVICE. INSPECTED CMC FOR ASSOCIATED MESSAGES FOR WING A/I. PERFORMED ANTI-ICING SYSTEM OPERATIONAL TEST IAW EMB 145 AMM 30-00-00. THE OPERATIONAL CHECK WAS GOOD. NO DEFECTS OR ASSOCIATED CMC MESSAGES NOTED. THE AIRCRAFT WAS RETURNED TO SERVICE.