Inverter Air Conditioning Systems

Inverter Air Conditioning Systems - Volume 2: Diagnostics, Servicing, and Troubleshooting is a practical technical guide designed for air-conditioning technicians, students, trainees, instructors, and service professionals who want to develop a systematic approach to inverter AC diagnosis.

Building on the fundamentals introduced in Volume 1, this volume focuses on practical fault diagnosis, electrical and electronic testing, inverter compressor diagnostics, PCB troubleshooting, sensors, communication circuits, power electronics, refrigeration-system analysis, error codes, protection faults, and field-service procedures.

The book follows a disciplined troubleshooting method:

OBSERVE → MEASURE → ANALYZE → ISOLATE → REPAIR → VERIFY

Rather than relying on guesswork or unnecessary parts replacement, readers are guided to identify symptoms, obtain meaningful measurements, analyze technical evidence, isolate the actual fault, perform appropriate corrective action, and verify system performance.

Topics include diagnostic instruments, DC-bus and power-supply testing, inverter compressor diagnosis, IPM/IGBT/MOSFET testing concepts, sensor and thermistor diagnostics, indoor-outdoor communication faults, BLDC fan and EEV diagnostics, PCB inspection, refrigeration-system diagnosis, advanced troubleshooting case studies, decision trees, and practical diagnostic worksheets.

A practical reference for anyone seeking to strengthen their knowledge and confidence in modern inverter air-conditioning servicing and troubleshooting.