As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FORWARD CABIN COLDER THAN SELECTED WITH SWITCH ON & TEMP CONTROL IN AUTO. INOP LIGHT EXISTING. PRESS ECS REC BUTTON AND RECORD ZONE TEMPS. REPLACED ZONE TEMP CONTROLLER PER MM. ACCP SVC TIP 21-61-00, NO FAULTS ON PACK TEMP CONTROLLERS AND ZONE TEMP CONTROLS. REC ZONE TEMP SHOWED FW D 46, 0 VLV, OPS CHECK VLV NOW GOOD.