As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CLIMBING THROUGH 2200 FT EQUIPMENT COOLING VALVE LIGHT ILLUMINATED AND EICAS MESSAGE FWD EQUIPMENT VAL DISPLAYED, ACFT DIVERTED. FOUND OVERBOARD EXHAUST VALVE NOT COMPLETELY MANUAL CRANK VALVE TO FULL CLOSE PAST OVERCENTER LOCK IAW AMM 21-58-00. R & R UPPER EICAS COMPUTER IAW AMM 31-41-01. OPS CHECK NORMAL.