Electronic Variable Displacement Compressor Diagnostic Tips | Pro Training PowerHour

In this month's Pro Training PowerHour, Pro Training Instructor Peter McArdle, discusses electronic variable displacement compressors. These are compressors where the pumping displacement, the actual pumping output of the compressor is completely computer controlled. We're finding there's a lot of misunderstanding and misdiagnosis associated with these compressors. Peter goes over electronic variable displacement compressor operation, diagnosing them, and some service tips. Chapters: 0:00 Introduction 0:32 Topics 1:02 Electronic Variable Displacement Compressor 11:16 ECVD Compressor Types: Clutch vs. Clutchless 11:23 Positive Side Control ECV Circuit 11:42 Ground Side Control ECV Circuit 12:07 ECV Solenoid: Voltage and Current Waveform 12:54 Bi-directional Testing Options 20:51 Using a Dedicated Tool Can Simplify Diagnosis 21:09 TSB10/17/19 Compressor 24:28 Refrigerant Volume Flow Sensor Testing 25:39 Volume Flow Sensor Scope Pattern 27:46 Refrigerant Volume Flow Sensor Issue 29:09 Oil Quality Critical 29:38 Critical Service Difference: Lubrication Chemistry 30:03 Adding Oil to Compressor with Crankcase 30:06 Turn Compressor by Hand Before Start Up 30:50 Check Compressor Voltage Drop 31:53 Refrigerant News Pro Training PowerHour is a free, live virtual technical series that features live demonstrations from Standard® Pro Trainers. Each session will provide you with a systems overview, diagnostic recommendations and installation tips. Register for the next PowerHour: http://www.ProTrainingPowerHour.com Watch previous sessions:    • Pro Training Power Hour   To learn more, visit http://www.4S.com