hi dias
as cyberrat said , u have to specify a brand (Make) and model , but if u need something to review try this one and let's know what make and model u want to get it for u
regards
"Troubleshooting and Servicing Modern Air Conditioning and Refigeration Systems"
Author: John Tomczyk
Published by: Esco Press, P.O. Box 521, Mt Prospect, IL 60056
Web Site: **broken link removed**
ISBN 1-930044-06-2
"TECH Method Lesson Series" written by Gary R. Lloyd CMS aka Me.
S. Elonka's "Standard Refrigeration and Air Conditioning Q&A",
"DOOLIN'S TROUBLE SHOOTERS BIBLE". www.doolco.com - isbn no 0-914626-11-6