Narrative:

After climbing through 10;000 feet; the 1st flight attendant called and notified me that the forward mid cabin temperature was being reported by passengers as extremely hot. After reviewing the conditions page I noticed that the zone 2 cabin air was at 100 degrees and the zone 2 trim valve was at 156 degrees. I then closed the hot air 2 valve to control the zone 2 temperature which eventually caused the flight deck to get extremely cold. The A330 fcom (flight crew operations manual) vol. 3 and MEL was reviewed for procedures; none was found. Dispatch and maintenance control was contacted to notify and asset; we were instructed to reboot three different computers; none of these corrected the problem. It was at this time that the team decided to return to our departure airport. ATC was contacted thru cpdl (controller pilot data link) that we needed to return to ZZZ; a new clearance was issued to return to ZZZ1. Dispatched followed up with a re-dispatch flight plan to ZZZ. After we had requested and received the air turn back to our departure airport; dispatch informed us that maintenance wanted to know if we could proceed to ZZZ1. At that time I informed them that we had already requested and were given a clearance to ZZZ. The remaining of the flight was uneventful.this will not keep system failures like this in the future; but personally; I find the tablet; windows 8 and adobe reader are difficult to manipulate and for safety concerns; I will need classroom training before I'm able to use the device efficiently. Another problem I am having with the tablet is working with the fom and fcom. Our manuals are not embedded with hyperlinks to corresponding pages. The electronic versions of the manuals needs to be more user friendly and we should all have basic training on how to manipulate the operating programs. May I suggest that the company setup an ongoing classroom course on how to operate the new tablet; operating system; and adobe reader. Knowledge of how to operate the tablet and the skill to quickly search information is vitally important to the success of training and safety when flying the line.

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Original NASA ASRS Text

Title: A330 Captain reported very hot cabin temperatures during climb out and returned to the departure airport for an uneventful landing. The zone 2 cabin trim valve was reported failed.

Narrative: After climbing through 10;000 feet; the 1st FA called and notified me that the forward mid cabin temperature was being reported by passengers as extremely hot. After reviewing the conditions page I noticed that the zone 2 cabin air was at 100 degrees and the zone 2 Trim Valve was at 156 degrees. I then closed the Hot Air 2 valve to control the zone 2 temperature which eventually caused the flight deck to get extremely cold. The A330 FCOM (Flight Crew Operations Manual) Vol. 3 and MEL was reviewed for procedures; none was found. Dispatch and Maintenance Control was contacted to notify and asset; we were instructed to reboot three different computers; none of these corrected the problem. It was at this time that the team decided to return to our departure airport. ATC was contacted thru CPDL (Controller Pilot Data Link) that we needed to return to ZZZ; a new clearance was issued to return to ZZZ1. Dispatched followed up with a re-dispatch flight plan to ZZZ. After we had requested and received the air turn back to our departure airport; dispatch informed us that Maintenance wanted to know if we could proceed to ZZZ1. At that time I informed them that we had already requested and were given a clearance to ZZZ. The remaining of the flight was uneventful.This will not keep system failures like this in the future; but personally; I find the tablet; Windows 8 and Adobe Reader are difficult to manipulate and for safety concerns; I will need classroom training before I'm able to use the device efficiently. Another problem I am having with the tablet is working with the FOM and FCOM. Our manuals are not embedded with hyperlinks to corresponding pages. The electronic versions of the manuals needs to be more user friendly and we should all have basic training on how to manipulate the operating programs. May I suggest that the company setup an ongoing classroom course on how to operate the new tablet; operating system; and Adobe Reader. Knowledge of how to operate the tablet and the skill to quickly search information is vitally important to the success of training and safety when flying the line.

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.