As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
THE AIRCRAFT WAS GROUNDED. WHILE CLIMBING THRU 10,000 FT, CABIN ALTITUDE WARNING SOUNDED. MADE SURE ENGINE BLEEDS WERE ON. NOTICED NO CLB OR DECENT IN PRESS DIFF GAUGE. THE FLIGHT DECLARED AN EMERGENCY AND RETURNED TO MIA WITHOUT FURTHER INCIDENT. REMOVED AND REPLACED CABIN PRESSURE CONTROLLER NR 2 IAW AMM 21-31-01. ACCOMPLISHED ENGINE RUN IAW AMM 71-00-00. OPS CKS GOOD.