As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CABIN RATE OF CLIMB AND CAB ALT INCORRECT, AIRCRAFT DIVERT TO TPE. DCPC 1 AND 2 BITE NO FAULT WAS FOUND AND BOTH PACK OPERATION FOUND NO FLOW. BOTH PACK FLOW CONTROL VALVE REPLACED, FUNCTION OPERATION AND LEAK CHECK NORMAL. CABIN PRESSURIZED CONDITION CHECK NORMAL. BOTH ENGINE RUN-UP CHECK NORMAL.