As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING CLIMB, RECEIVED A WHEEL WELL FIRE WARNING FOR THREE SECONDS. EMERGENCY DECLARED. DIVERTED AND LANDING UNEVENTFUL. MAINTENANCE INSPECTED AND FOUND NO EVIDENCE OF OVERHEAT OR FIRE. REMOVED AND REPLACED WHEEL WELL OVERHEAT DETECTION CONTROL UNIT M237 IAW AMM 26-18-01. OPS CHECKED GOOD.