As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
REPLACED LT PACK ANTI-ICE VALVE IAW AMM 21-61-41 PB.401, DUE TO PACK OUTPUT TEMP INDICATION ALWAYS SHOWING BELOW FREEZING. REMOVED AND REPLACED LH PAC ANTI-ICE VALVE REF AMM 21-61-41-400-001-A. PURGED THE REMOVED SENSE LINES, ACCOMPLISHED PACK OPS TEST IAW AMM 21-61-00-710-001-A, NO FAULTS NOTED. LEAK CHECK GOOD. ABLE TO CONTROL CABIN TEMPS UP & DOWN WITH PACK OUT TEMPS FOR BOTH SIDES MATCHING. NOTED THAT COMP DISCHARGE TEMPS STAYED BELOW 190C WITH OVHT CONDITIONS ENCOUNTERED.