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Course 9 — Service, Maintenance and Troubleshooting
Lessons
9.1 Preventive maintenance schedule and service records
9.2 Cleaning coils and heat exchangers; descaling
9.3 Water treatment and scale prevention
9.4 A systematic troubleshooting method
9.5 Reading fault codes and controller logs
9.6 High-pressure trips
9.7 Low-pressure trips
9.8 Low capacity and falling COP
9.9 Compressor failures and their root causes
9.10 Leak detection and repair
9.11 Electrical and control faults
Review and resources
Quiz 9: check your understanding
Glossary
Course 9 handbook (PDF download)
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About the author