As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON FLIGHT 3090 DURING CLIMB OUT AT 5000FT, ANTI-ICE 2 FAIL. OVERRIDE IN AUTO. JUST PRIOR TO REACHING ICING CONDITIONS, EMERGENCY WAS DECLARED & RETURNED TO ORD. LANDING WEIGHT WAS BELOW MAXIMUM AT 42600 LBS. THE ACFT WAS REMOVED FROM SERVICE. APPROPRIATE INDICATIONS WERE NOTED DURING ENG RUN M PROCEDURES OF MEL 30-11. REMOVED AND REPLACED ANTI-ICE VALVE IAW EMB AMM 30-21-01. OPS CHECK GOOD.