As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DFW - CREW REPORTED TAIL COMPARTMENT TEMPERATURE HIGH LIGHT ILLUMINATED ON CLIMBOUT. TURNED HIGH PRESSURE BLEED SWITCH TO OFF AND LIGHT EXTINGUISHED. EMERGENCY DECLARED FLIGHT RETURNED DWF LANDED WITHOUT INCIDENT. AIRCRAFT REMOVED FROM SERVICE. REPLACED RIGHT AIR CONDITIONING GROUND CHECK VALVE ASSEMBLY.