As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LEFT ENGINE ANTI-ICE VALVE LIGHT ON WITH SWITCH ON AND BLEED SWITCH OFF. LEFT ENG ANTI-ICE VALVE FAIL TO OPEN WITH ENG BLEED OFF. PER OFF GATE DEICING. DEFER IN THE LOCKED OPEN POSITION. REF MEL CARD 30065. SECURED HPSOV IN CLOSED POSITION. REPLACED LEFT ENGINE ANTI-ICE VALVE PER AMM, TESTS OKAY.