Product Description : Air Conditioning and Refrigeration Troubleshooting Handbook For courses in Principles of HVACR Electronic Controls and HVAC System DesignThis comprehensive text covers both electric and electronic controls in one book in depth Using ataglance charts crossreferenced to specific sections of the text it encompasses control operation adjustment troubleshooting installation and use and provides startup procedures for different types of units representative wiring diagrams for some types of equipment safety procedures and useful engineering data(IT’S AN USED PRODUCT).