As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED: AIR PACK #1 AND #2 FAULT WOULD NOT RESET. AIRCRAFT RETURNED TO PHX WHERE IT LANDED SAFELY WITHOUT FURTHER INCIDENT. NOTE: NO EMERGENCY WAS DECLARED. **ORIGINAL REPORT WAS AALA202206137160** REPLACED THE LEFT FLOW CONTROL VALVE AND THE RIGHT FLOW CONTROL VALVE PER AMM 21-51-51 (AALA202206143336) A SATISFACTORY LEAK / OPERATIONAL CHECK WAS ACCOMPLISHED.