As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LAS TO OKC - DURING CLIMBOUT CREW REPORTED, UNABLE TO CONTROL TEMP IN AUTO OR MANUAL BOTH PACKS. OVERHEAT TRIPPED OFF RIGHT PACK. BOTH VALVES SHOW FULL COLD, CABIN SUPPLY TEMP 60 DEGREES CELSIUS. HP BLEED OFF, NO CHANGE. AIRCRAFT RETURNED TO LAS AND LANDED WITHOUT INCIDENT. MAINTENANCE REPLACED WATER SEPARATOR FORWARD CLAMP AND REPLACED LEFT PRESSURE REGULATOR VALVE. SYSTEM OPERATIONALLY CHECKED GOOD ON GROUND. TEST FLIGHT COMPLETED SUCCESSFULLY. AIRCRAFT RETURNED TO SERVICE.