As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WING ANTI-ICE ZONE LOSS OF WING ICE PROTECTION HEATING FOR ONE SYMMETRIC ZONE PAIR. WING ANTI ICE ZONE STATUS MESSAGE, REPLACE CARD REF AMM AMM B787-A-30-11-03-00A-720A-A. INSTALLED SW PERFORMED GROUND TEST ALL TEST PASSED. NO MESSAGES AC OK TO CONTINUE.