As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CLIMBING OUT IN ICING CONDITION STAB ANTI-ICE FAIL ON EICAS. FOLLOWED AOM CHECKLIST & WAS NOT ABLE TO RESTORE SYS. R & R HORIZONTAL STAB SWITCH MANIFOLD IAW AMM 30-12-14. PERFORMED OPERATIONAL CHECK OF ANTI-ICING SYS IAW AMM 30-00-00-700-802A. OPERATIONS CHECKED GOOD.