As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
RETURNED & ACFT WAS GNDED. DURING CLIMB OUT AFTER GEAR RETRACTION GOT ECAM LGCIU 1 FAULT WITH THREE RED LG UNLOCKED LIGHTS. CREW DECLARED AN EMER & RETURNED WHERE THE ACFT LANDED SAFELY WITH NO FURTHER INCIDENTS. REPLACED THE LG LEVER IAW AMM 32-31-11-0401. ACCOMPLISHED A SATISFACTORY OPERATIONAL CHECK.