Contact Hour Total:64 An advanced course in application of troubleshooting principles and use of test instruments to diagnose air conditioning and refrigeration components and system problems including conducting performance tests. Prerequisite(s): HART 1401 AND CNBT 1210 Corequisite(s): HART 1401 AND CNBT 1210 Co-enrolled: None Course Fee:100 Texas Higher Education Coordinating Board Workforce Education Course Manual (WECM) course