What was found
R PACK STATUS MESSAGE DURING TAXI. RESET PACK AND EXTINGUISHED. ON DEPARTURE WHEN SWAPPED BLEEDS AND DROPPED APU L PACK HI PRESSURE CAUTION. CABIN ALTITUDE HI CAUTION MESSAGE. REMAINED BELOW 10K FEET. CABIN ALTITUDE CLIMBED TO 9999 FEET. WORKED THROUGH QRH. LANDED IN DENVER. (FLIGHT 4668) UPON ARRIVAL, TROUBLESHOT R PACK STATUS MESSAGE. FOUND R PACK CYCLING OFF AND ON CONTINUOUSLY. FOUND RH COMPRESSOR OUTLET TEMP SWITCH CANNON PLUG DISCONNECTED. RE-CONNECTED CANNON PLUG, BUT DID NOT FIX ISSUE. REMOVED AND REPLACED R PACK PRSOV REF CRJ-200 AMM 21-51-43. OPS CHECK GOOD, BUT DID NOT FIX ORIGINAL WRITE UP. PLEASE REFERENCE AML 1631350 FOR L PACK HIGH PRESSURE CAUTION CORRECTIVE ACTION. PLEASE REFERENCE AML 1631351 FOR CABIN ALTITUDE CLIMB TO 9999 FEET CORRECTIVE ACTION. PLEASE REFERENCE AML 1631693 FOR R PACK STATUS MESSAGE DURING TAXI.