As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LEFT PACK LIGHT ILLUMINATION DURING TAXI. FOLLOWED QRH PROCEDURES AND LIGHT EXTINGUISHED. ACFT GROUNDED. RAN ELECTRIC BITE ON LEFT PACK, FOUND TEMP CONTROL VALVE FAULT. CLEARED ON RESET. DETERMINED TO BE INTERMITTENT FAULT. LEFT PACK LIGHT EXTINGUISHED IAW AMM 21-61-00.