As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CONTROL CABIN ZONE TEMP LIGHT ILLUMINATED ON TAXI WILL NOT RESET. ACFT GROUNDED. PERFORMED ZONE TEMP LIGHT ON FAULT ISOLATION IAW FIM 21-62, TASK 839. PERFORMED ZONE TEMP CONTROLLER BITE. NO EXISTING FAULTS, OK FOR SERVICE REF FIM TASK 21-62, TASK 801.