A319 check airman reported air return after environmental system control failure.

Attributes
ACN	1592506
Time
Date	201811
Local Time Of Day	0601-1200
Place
Locale Reference	ZZZ.Airport
State Reference	US
Environment
Flight Conditions	VMC
Aircraft 1
Make Model Name	A319
Operating Under FAR Part	Part 121
Flight Phase	Climb
Flight Plan	IFR
Component
Aircraft Component	Aircraft Cooling System
Person 1
Function	Check Pilot
Qualification	Flight Crew Instrument Flight Crew Air Transport Pilot (ATP) Flight Crew Multiengine
Events
Anomaly	Aircraft Equipment Problem Less Severe

Narrative:

Flight departed ZZZ to ZZZ1 and returned to ZZZ after a failure of environmental controls left crew unable to control temperature inside aircraft. During climb thru approximately FL160 air condition system commanded full hot in all zones and cabin and flight deck temperatures rapidly rose. Crew was unable to regain control and as temperature reached very high levels; elected to return to ZZZ without further incident.

Original NASA ASRS Text

Title: A319 Check Airman reported air return after environmental system control failure.

Narrative: Flight departed ZZZ to ZZZ1 and returned to ZZZ after a failure of environmental controls left crew unable to control temperature inside aircraft. During climb thru approximately FL160 air condition system commanded full hot in all zones and cabin and flight deck temperatures rapidly rose. Crew was unable to regain control and as temperature reached very high levels; elected to return to ZZZ without further incident.

Data retrieved from NASA's ASRS site and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.