As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED: PILOT REPORTS ON TAKE OFF GOT MASTER CAUTION AIR CONDITIONING AND PACK LIGHT, REJECTED TAKE OFF AT 40 KNOTS DUE TO RIGHT PACK LIGHT. MAINTENANCE ACCOMPLISHED FIM 21-62-00-810-801 ON BOTH CONTROLLERS. REMOVED AND REPLACED R/H PACK CONTROLLER IAW AMM 21-20-00. OPS CHECK GOOD.