As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PDX - NR 1 BLEED HOT CAUTION ILLUMINATED IN CRUISE, TURNED NR 1 BLEED OFF AND CAUTION LIGHT WENT OUT AFTER 8 MINUTES. TURNED NR 1 BLEED SWITCH BACK ON AND NR 1 BLEED CAUTION ILLUMINATED AGAIN AFTER ABOUT 5 MINUTES. DIVERTED TO PDX. LANDING UNEVENTFUL. REPLACED L NAPRSOV AND L HPSOV. PERFORMED OPS TEST OF BLEED AIR SYSTEM IAW AMM TASK 36-11-00-710-802. FAULT DID NOT RE-OCCUR. OPS TEST GOOD. RETURNED TO SERVICE.