As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CREW REPORTED FWD EQUIP VALVE ON MESSAGE. SW TO STBY, STILL HAVE MSG AND LIGHT ILLUM. FOUND INBOARD SUPPLY VLV STUCK IN CLOSED POSITION NOT ALLOWING EQ COOLING AIR INTO SYSTEM. REPLACED VALVE. MSGS AND LIGHTS NOW CLEAR. OPS CHECK GOOD.