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Nov 04, 2026
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HVAC 201 - Cooling Service
PREREQUISITES: HVAC 103 - Refrigeration I .
PROGRAM: Heating, Ventilation, and Air Conditioning
CREDIT HOURS MIN: 3
LECTURE HOURS MIN: 2
LAB HOURS MIN: 2
DATE OF LAST REVISION: Fall 2023
Covers procedures used to diagnose electrical, control, mechanical and refrigeration problems common to cooling systems. Familiarizes students with using the refrigeration cycle and temperature/pressure charts as diagnostic tools in troubleshooting refrigeration system problems. Includes various methods of checking refrigerant charges, methods for charging air conditioning and refrigeration systems, electrical and refrigeration system components, and schematic and pictorial diagrams. This course will use lecture, lab and online simulation to prepare students for the nationally recognized certification exam as part of the outcome assessment learning objectives.
MAJOR COURSE LEARNING OBJECTIVES: Upon successful completion of this course the student will be expected to:
- Demonstrate safe practices and procedures.
- Interpret and utilize pictorial and schematic diagrams.
- Identify compressor terminals using an ohmmeter.
- Complete compressor electrical test for grounded or open windings.
- Test capacitors and properly size replacements.
- Troubleshoot electrical control system components.
- Analyze compressor problems.
- Describe how to replace defective compressors and clean the system after a motor burnout.
- Troubleshoot refrigeration system problems.
- Determine superheat and subcooling on an operating refrigeration system.
- Identify and describe the function of common electrical components found on A/C and refrigeration systems covered in this course.
- Identify and describe the function of common refrigeration system components found on A/C and refrigeration systems covered in this course.
- Outline the NEC code requirements for wiring A/C units and disconnects.
- Fan motor replacement guidelines.
- Attain readiness to take the ESCO HVAC Excellence Low GWP Exam.
COURSE CONTENT: Topical areas of study include -
- Electrical schematic diagrams
- Using the refrigeration cycle as a diagnostic tool
- Using a temperature/pressure chart
- Motor winding and starting component testing
- Electrical and refrigeration system components
- Methods for checking charge and charging A/C and refrigeration units
- Mechanical, electrical and refrigeration system troubleshooting
- NEC wiring and disconnect requirements
- Calculating superheat and subcooling
- Compressor change outs and refrigeration system clean up after compressor motor burnouts
- Low GWP refrigerants
GRADING POLICY
| A |
90-100 |
| B |
80-89 |
| C |
70-79 |
| D |
60-69 |
| F |
0-59 |
Course Addendum - Syllabus (Click to expand)
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