As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER PUSHBACK AND ENGINE START, PRESSING RECALL RESULTED IN MASTER CAUTION AND A RIGHT PACK LIGHT. PERFORMED QRH. PRESSING MASTER CAUTION EXTINGUISHED THE PACK LIGHT AND MASTER CAUTION LIGHT. ACFT GROUNDED. ACCOMPLISHED FIM 21-53 TASK 804. INITIAL EVALUATION. OPERATED RIGHT PACK FOR 30 MIN AND PACK LIGHT DID NOT COME ON WHEN PUSHING THE MASTER CAUTION RECALL. SYSTEM OPERATES NORMALLY AND NO HISTORY THIRTY DAYS.