As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
GEG - ON FLIGHT 2392, CABIN DUCT HOT CAUTION ILLUMINATED AT 3000' INTO CLIMB. AFTER RUNNING EMERGENCY CHECKLIST HAD CONTROL OF HEAT. MAINTENANCE COMPLIED WITH FIM. ECS SYSTEM WORKS NORMAL. NO ASSOCIATED CAUTION LIGHT. AIRCRAFT RETURNED TO SERVICE. NO PARTS REPLACED.