As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ZONE TEMP LIGHT ILLUMINATES ON CONT CAB DURING MASTER CAUTION RECALL. LIGHT EXTINGUISHES UPON MASTER CAUTION RESET. GROUNDED - YES. PERFORMED B737-800 FIM 21-62 TASK 842. NO FAULTS DETECTED, CONT CAB "ZONE TEMP" LIGHT DID NOT ILLUMINATE, FAULT DETERMINED TO BE INTERMITTENT. NO FURTHER ACTION IS REQUIRED.