As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
NR 1 COWL ANTI-ICE LIGHT CAME ON DURING CLIMBOUT WHILE USING ANTI-ICE. WENT OUT AFTER 2 MINUTES. ACFT GROUNDED. DURING TROUBLESHOOTING OF THE ANTI-ICE VALVE ON THE NR 1 ENGINE, FOUND THE PRSOV IN THE OPEN POSITION WITH ENGINE SHUTDOWN AND APU AIR OFF. REMOVED AND REPLACED THE PRSOV IAW AMM 36-11-04/401. NO LEAKS NOTED. COMPLIED WITH FIM 30-21 TASK 809. REMOVED AND REPLACED THE NR 1 ENGINE COWL TAI VALVE IAW AMM 30-21-11/401. OPS CHECKED NORMAL. NO LEAKS DETECTED.