As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
EICAS MSG. L ENG ANTI-IC E. 5 MIN AFTER SWITCH ACTIVATION REF FIM TASK 30-21-00-815-803 FOUND A/ICE VLV SOLONOID SHORTED. RECCOMEND REPLACING ENGINE A/ICE VLV. PARTS ORDERED TO PARTS DROP. REMOVED #1 ENGINE TAI VALVE PER AMM 30-21-03-004-017. INSTALLED NEW VALVE AND TESTED PER AMM 30-21-03-404-016. TEST GOOD.