Flight Crew Air Transport Pilot (ATP)
Aircraft Equipment Problem Less Severe
Flight Crew Landed As Precaution; Flight Crew Returned To Departure Airport
Aircraft
On climb-out Engine 1 NAC (Nacelle) 300 degrees flashed. Also noticed Bleed Air High Pressure valve open on Engine 1. Output of Intermediate Pressure valve showed matched temp and PSI comparing Engine 1 and Engine 2. Leveled at FL250 per ATC. Engine 1 NAC message became constant. Reduced thrust on Engine 1 and NAC temp message went away with almost idle thrust. Suspected bleed air leak since low power was only way to keep NAC temp message off. Made decision to return to Airport ZZZ. Accomplished overweight landing checklist with estimated landing weight of 160;200 lbs. Uneventful landing with minimal sink rate. Had fire and rescue inspect Engine 1 for possible fire damage. No damage noted and taxied to gate. Maintenance personnel met plane and I wrote up Engine 1 NAC. Maintenance personnel told us not to write up overweight landing due to low sink rate on landing. I should have written up overweight landing according to checklist procedures. First officer did a great job flying the airplane and coordinating with ATC to expeditiously get plane to ZZZ while I coordinated with company through ACARS. All flight attendants did an excellent job of getting cabin ready for precautionary landing.Engine 1 High Pressure valve was stuck open causing NAC message and possible bleed leak.
A320 Captain reported returning to destination airport when they received a nacelle high temperature ECAM warning that was apparently related to a High Pressure bleed valve stuck open.