As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS NOT GROUNDED: INFLIGHT, THE AFT CHILLERS BEGAN TO DISPLAY INTERMITTENT OPERATING LIGHT AND INTERMITTENT FAIL LIGHT ACCOMPANIED BY A BURNING SMELL. CHILLERS WERE TURNED OFF AND SMELL DISSIPATED. MAINTENANCE REPLACED AFT CHILLER AND ACCOMPLISHED A SATISFACTORY OPERATIONAL CHECK PER AMM 25-34-51.