As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
"FWD EQUIPMENT VALVE" EICAS. PERFORMED OPERATIONS CHECK, IAW AMM 21-58-00. OPERATIONS CHECK GOOD. FIM TASK 21-58 TASK 805 STATES SHORT TERM POWER INTERRUPTIONS LIKE THE ONES THAT OCCUR DURING A POWER TRANSFER (GROUND-APU, APU-ENGINE, APU-GROUND ETC) CAN CAUSE THE EICAS MESSAGE, FWD EQUIPMENT VALVE TO SHOW AND VALVE LIGHT TO COME ON. NORMAL OPERATIONS.