As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CLE - FLIGHT 3218, THE CREW REPORTED THE LANDING GEAR WOULD NOT RETRACT DURING CLIMB. THE AIRCRAFT RETURNED AND LANDED WITHOUT FURTHER INCIDENT. MAINTENANCE INSPECTED AND REPLACED THE LANDING GEAR ELECTRONIC UNIT. OPERATIONAL CHECKS WERE GOOD. THE AIRCRAFT WAS TEST FLOWN AND NO DEFECTS WERE NOTED. THE AIRCRAFT WAS RELEASED FOR SERVICE.