As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
EQUIPMENT COOLING EICAS, RTFL. SEQUENCE OF EVENT WAS FWD EQUIP OVERHEAT EICAS MESSAGE & OVERHEAT LIGHT IN AUTO; SWITCHED TO STANDBY - OVERHEAT LIGHT WENT OUT BUT CAME ON 5 MINS LATER. SWITCHED TO OVERRIDE OVERHEAT LIGHT WENT OUT BUT NO COOLING LIGHT ILLUMINATED AND EICAS MESSAGE CHANGED TO FWD EQUIP COOLING. REPLACED RELAY K626 & COOLING IND CARD M867. OK IN AIR MODE.