AMAPPLIANCE MASTERSACADEMY

COURSE 06 · COMPLETE COURSE PACKAGE

Residential Sealed Systems: R134a & R600a

Residential Sealed Systems: R134a & R600a course book cover

Essential sealed-system knowledge for qualified technicians pursuing deeper refrigeration expertise.

Understand how refrigerant moves heat, how faults change the cycle and what the tools measure. Learn the complete qualified repair and verification plan.

For aspiring technicians and experienced professionals.

Invest in your skills. Build a stronger future in appliance repair.

Course book

214 pages, 60 chapters and 24 worked cases. 15 guides for testing components.

Video references

2 supplemental third-party references with viewing tasks.

Quizzes & workbook

180 explained assessment questions, 6 additional component exercises, a 105-page workbook and 10 printable field forms.

Diagnostic support

12 months after completion; response within 24 hours.

$999 USD

One course purchase includes the course book, workbook, supplemental video references, quizzes and 12 months of diagnostic email support after completion.

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60 course chapters

Part 1: Foundations and qualification

  1. What this course teaches
  2. Read the refrigerant nameplate
  3. Certification and refrigerant rules
  4. Why R600a needs a different work plan
  5. Electrical, pressure and stored-energy hazards
  6. Decide whether repair is practical

Part 2: Core refrigeration cycle

  1. Pressure, temperature and phase
  2. The compressor's job
  3. The condenser's job
  4. The metering device's job
  5. The evaporator's job
  6. Superheat, subcooling and system balance

Part 3: System architectures

  1. Capillary tubes and filter-driers
  2. Dual evaporators and refrigerant valves
  3. Variable-speed compressors
  4. Freezer applications
  5. Wine-cooler applications
  6. Beverage-cooler applications

Part 4: Non-invasive diagnosis

  1. Demand and temperature reporting
  2. Airflow and defrost before circuit opening
  3. Use temperature trends
  4. Read frost patterns carefully
  5. Compressor current
  6. Decide what a circuit test must answer

Part 5: Advanced fault separation

  1. Low-charge behavior
  2. Restrictions and moisture
  3. Loss of compressor pumping capacity
  4. Noncondensables and contamination
  5. Ambient temperature and changing load
  6. Gauge pressure, absolute pressure and vacuum

Part 6: Equipment and work preparation

  1. Common sealed-system tools
  2. Recovery equipment
  3. Charging scales
  4. Leak detection and ventilation
  5. Dry nitrogen and pressure testing
  6. Control ignition sources

Part 7: Repair planning

  1. Service access
  2. Locate a leak
  3. Match the compressor
  4. Filter-drier selection and replacement
  5. Refrigeration joints
  6. Correct contamination

Part 8: Qualified service work workflows

  1. R134a removal and recovery
  2. R600a service handling
  3. Check integrity before charging
  4. Evacuation and a standing-vacuum test
  5. Restore the specified charge
  6. Close the service route

Part 9: Post-repair verification

  1. Initial startup
  2. Pull-down and stabilization
  3. Final leak verification
  4. Record the temperature result
  5. Return the appliance to service
  6. Explain warranty and recurrence

Part 10: Field assessment

  1. R134a worked cases
  2. R600a worked cases
  3. Restriction and moisture cases
  4. Wine and beverage cases
  5. Request diagnostic support
  6. Apply the course
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