What was found
SEA - ON FLIGHT 2362, NR 1 AND NR 2 BLEED HOT CAUTION LIGHTS ILLUMINATED AT 500' AFTER TAKEOFF. FIFTEEN MINUTES AFTER TAKEOFF, FIFTEEN MINUTES AFTER CONDUCTING RAM AIR CHECKLIST, BOTH BLEED HOT CAUTION WENT OUT. MAINTENANCE CHECKED CDS FOR FAULTS, CLEARED FAULTS, PERFORMED BLEED AIR OPERATIONAL TEST, TEST GOOD. AIRCRAFT RETURNED TO SERVICE. NO PARTS REPLACED.