As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHILE PUSHING FROM GATE, CREW REPORTED BRAKE OVERHEAT WARNING AND BRAKE TEMPERATURE MONITORING SYS READING 20, BUT NO APPARENT FIRE. CREW RAN QRH AND DECLARED AN EMERGENCY. AFTER TRUCKS ARRIVED, CREW RETURNED TO GATE WITHOUT ISSUE. MAINTENANCE INSPECTED, R & R NR 1 BRAKE THERMOCOUPLE AND PERFORMED CHECKS IAW AMM. ACFT RELEASED FOR SERVICE.