As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LHR - DURING CLIMBOUT 1ST CLASS GALLEY CHILLER BEGAN MAKING A LOUD NOISE WITH VIBRATION FOLLOWED BY A STRONG ELECTRICAL BURNING SMELL. AFTER ALL GALLEY POWER TO CHILLER WAS REMOVED SOUND STOPPED AND SMELL DISSIPATED. FLIGHT LANDED LHR WITHOUT INCIDENT. REPLACED 1ST CLASS GALLEY CHILLER. SYSTEM GROUND CHECK NORMAL OPERATION.