Diploma in Refrigerator Repairs – Ransford Global
RANSFORD'S

Diploma in Refrigerator Repairs

A practical diploma for refrigeration technicians, appliance repair technicians, maintenance engineers, electrical technicians, and entrepreneurs seeking comprehensive mastery in refrigeration principles, system components, refrigerants, electrical systems, fault diagnosis, and professional repair practice.

Apply Now View 48 Units
4Weeks
8Modules
48Units
100% OnlineDelivery
100% Online Expert support Self-Paced Mobile-Friendly Verified Diploma

🎯 Programme Outcome

Upon completion of the Diploma in Refrigerator Repairs, learners will be equipped with professional-level knowledge and practical skills in refrigeration repair. Graduates will be prepared for roles as refrigerator repair technicians, refrigeration service technicians, appliance maintenance officers, HVAC-R assistants, and refrigeration business owners, and will receive a verifiable Diploma issued by Ransford Global Professional Development Ltd.

100% Online Delivery

All content is delivered conveniently via WhatsApp and Email. Study at your own pace, receive module materials directly on your phone, and submit assessments through the same channels — no physical classes required.

Course Structure — 8 Modules · 48 Units

A comprehensive curriculum spanning refrigeration principles, tools and safety, system components, refrigerants and charging, electrical systems, fault diagnosis, repair practice, and business setup and capstone, with 6 units per module.

1
REF 101

Principles of Refrigeration

1
Fundamentals of Refrigeration — Heat, temperature, and cooling concepts.
2
The Refrigeration Cycle — Compression, condensation, expansion, and evaporation.
3
Pressure, Temperature and Heat Transfer — Core physics for technicians.
4
Types of Refrigeration Systems — Domestic, commercial, and industrial.
5
Refrigerator Construction and Layout — Cabinets, liners, and insulation.
6
Units, Measurements and Conversion — Working with pressures and temperatures.
2
REF 102

Tools, Equipment and Workshop Safety

1
Hand Tools for Refrigeration Work — Tube cutters, benders, and flaring tools.
2
Testing Instruments and Gauges — Manifold gauges, thermometers, and leak detectors.
3
Vacuum Pumps and Charging Equipment — Evacuation and refrigerant charging tools.
4
Workshop Safety and Personal Protective Equipment — Protecting yourself at work.
5
Electrical Safety and Lockout Procedures — Safe isolation practices.
6
Tool Maintenance and Workshop Organisation — Professional work habits.
3
REF 103

Refrigeration System Components

1
Compressors — Types, function, and common faults.
2
Condensers and Evaporators — Heat exchange and airflow.
3
Expansion Devices — Capillary tubes, valves, and metering.
4
Filters, Driers and Accumulators — System cleanliness and moisture control.
5
Tubing, Joints and Brazing — Leak-free connections.
6
Insulation, Doors and Seals — Maintaining cooling efficiency.
4
REF 104

Refrigerants, Evacuation and Charging

1
Types and Properties of Refrigerants — R134a, R600a, R410A, and more.
2
Environmental Impact and Regulations — Ozone and global warming considerations.
3
System Evacuation and Vacuuming — Removing air and moisture.
4
Charging Refrigerant Correctly — Weighing and pressure methods.
5
Leak Detection and Repair — Finding and sealing leaks.
6
Refrigerant Recovery and Handling Safety — Responsible and safe practice.
5
REF 105

Electrical Systems and Controls

1
Basic Electrical Theory for Technicians — Voltage, current, and resistance.
2
Compressor Motors and Start Devices — Relays, capacitors, and windings.
3
Thermostats and Temperature Controls — Regulating cooling.
4
Defrost Systems and Timers — Managing ice build-up.
5
Wiring Diagrams and Circuit Reading — Tracing electrical paths.
6
Multimeter Use and Electrical Testing — Measuring and diagnosing.
6
REF 106

Fault Diagnosis and Troubleshooting

1
Systematic Fault-Finding Methods — Structured diagnostic approach.
2
Diagnosing Cooling Problems — Not cooling, over-cooling, and uneven cooling.
3
Refrigerant and Pressure Faults — Low charge, restrictions, and blockages.
4
Electrical and Control Faults — No power, tripping, and faulty components.
5
Compressor and Mechanical Faults — Noise, seizure, and failure.
6
Diagnostic Reports and Customer Communication — Explaining faults clearly.
7
REF 107

Repair Practice and Preventive Maintenance

1
Component Replacement Procedures — Removing and installing parts safely.
2
Compressor Replacement and System Flushing — Major repair procedures.
3
Sealed System Repairs and Brazing — Working on closed circuits.
4
Preventive Maintenance and Servicing — Extending equipment life.
5
Testing, Commissioning and Quality Checks — Verifying repairs.
6
Customer Handover and Service Documentation — Professional completion.
8
REF 108

Refrigeration Business, Ethics and Capstone

1
Starting a Refrigeration Repair Business — Setting up professionally.
2
Costing, Quotations and Pricing Repairs — Charging fairly and profitably.
3
Customer Service and Reputation Management — Building trust and referrals.
4
Professional Ethics and Environmental Responsibility — Doing the job right.
5
Capstone: Refrigerator Repair Service Plan — Designing a practical service and business plan for a real or simulated workshop.
6
Presentation, Reflection and Professional Portfolio — Presenting your work and documenting your learning.

💰 Programme Investment

🇳🇬 Local: ₦72,740
🌍 Foreign: ₦92,740
Flexible Payment – No Interest
2–4 Instalments
Local: ₦18,185 – ₦36,370 each
Foreign: ₦23,185 – ₦46,370 each
Application fee included.
Account Name:Ransford Global PD LTD – LCO
Bank:Providus Bank PLC
Account Number:9651814927
Reference:DP-REF + Your Full Name
After payment, send receipt to WhatsApp +234 901 599 2500.
Pay Now with Card (Paystack) Enrol Now →

Why choose the Diploma in Refrigerator Repairs?

❄️

Professional Repair Skills

Develop comprehensive skills in refrigeration systems, refrigerants, electrical controls, and repair practice.

📱

100% Online via WhatsApp & Email

Receive all materials directly on your phone. Study at your own pace with expert support.

📊

8 Progressive Modules

Structured learning from refrigeration principles to diagnostics, repair, and business setup.

🎯

Hands‑On & Applied Focus

Learn system charging, leak detection, fault diagnosis, and compressor replacement — all for real‑world application.

📘

Complete Training Documents

Receive handbooks, worksheets, templates, and assessment tools.

🎓

Diploma

Earn a verifiable Diploma in Refrigerator Repairs to advance your technical career.

📘 Professional Development Training Documents

Every participant receives a comprehensive set of learning, practice, and assessment documents to guide transformation from curiosity to professional competence.

1. Programme Overview

  • Diploma Course Handbook
  • Training Syllabus & Curriculum
  • Programme Schedule / Calendar

2. Learning Materials

  • Lecture Notes / Module Manuals
  • Presentation Slides (PowerPoint)
  • Reading Materials / Wiring Diagrams

3. Practical Application Tools

  • Fault Diagnosis & Job Card Templates
  • Refrigerant Charging & Pressure Charts
  • Preventive Maintenance Checklists
  • Service Business Plan Templates

4. Personal Development Tools

  • Personal Action Plan
  • Goal Setting Templates
  • Reflective Journals / Logbooks

5. Assessment & Evaluation

  • Pre‑Assessment / Diagnostic Test
  • Continuous Assessment Tasks
  • Practical Skills Checklists
  • Final Assessment / Examination
  • Competency Evaluation Rubrics

6. Workplace Readiness Tools

  • Professional Code of Conduct
  • Ethical and Environmental Guidelines
  • Job Role Competency Framework

7. Certification & Completion

  • Diploma in Refrigerator Repairs
  • Diploma Transcript or Record of Achievement
  • Performance Summary Report (optional)
  • Recommendation Letter (optional for top performers)

8. Communication & Support

  • Instructor Contact Information Sheet
  • Feedback Forms
  • Participant Support Guidelines
  • FAQ Document

📌 Learn → Practice → Reflect → Apply → Assess → Certify

A complete professional development programme should follow this cycle.

🎯 Key Insight

A strong professional training programme is not defined by lectures alone, but by:
Worksheets (reflection) • Action plans (execution) • Assessments (measurement) • Practical tools (real‑world application)

How You'll Be Evaluated

Continuous applied tasks + final refrigerator repair service plan capstone

40%

Quizzes & Case Analyses

Refrigeration principles, refrigerants, electrical systems, and fault scenarios

30%

Practical Exercises

Charging procedures, leak detection, wiring tracing, and job cards

30%

Capstone Project

Refrigerator repair service plan and professional portfolio

Learning Outcomes & Career Pathways

Learning Outcomes

  • Explain refrigeration principles and the refrigeration cycle
  • Use refrigeration tools, instruments, and equipment safely
  • Identify and service refrigeration system components
  • Handle, evacuate, and charge refrigerants correctly
  • Diagnose electrical and control faults
  • Apply systematic fault-finding and troubleshooting methods
  • Carry out repairs and preventive maintenance professionally
  • Produce a practical refrigerator repair service plan

Career Opportunities

  • Refrigerator repair technician
  • Refrigeration service technician
  • Appliance maintenance officer
  • HVAC-R technician assistant
  • Refrigeration business owner
  • Pathway to advanced refrigeration and HVAC programmes

Assessment & Delivery

100% online, self-paced over 4 weeks. Assessment via module quizzes, practical exercises, and a final refrigerator repair service plan capstone. Diploma awarded.

Frequently Asked Questions

  • What is the Diploma in Refrigerator Repairs? — It is a 4-week, 8-module online diploma from Ransford Global Professional Development Ltd covering refrigeration principles, tools and safety, system components, refrigerants and charging, electrical systems, fault diagnosis, repair practice, and refrigeration business setup.
  • How long does the programme take? — The diploma is designed to be completed in 4 weeks, with 48 total units across 8 modules.
  • What is the fee for the programme? — The local student fee is ₦72,740 and the foreign student fee is ₦92,740, with flexible instalment options available.
  • Is the diploma delivered online? — Yes. All content is delivered 100% online via WhatsApp and Email, allowing you to study at your own pace.

Take the Next Step in Refrigerator Repairs

This Diploma gives you practical, applied training across 8 modules and 48 units. From refrigeration principles and system components to refrigerants, electrical controls, fault diagnosis, and repair practice, you'll gain the skills to repair refrigerators professionally and build a service business. Enrol today and receive your complete training package.

Apply Now WhatsApp Advisor

Ransford Global Professional Development

Empowering professionals with accessible, high‑quality education — from certificates to diplomas in refrigeration, electrical, engineering, technical trades, and more.

Contact Us

📱+234 901 599 2500
📞+234 705 560 0725
✉️rtsonlineeducation@gmail.com
📍48, Omuaran Street, Unity Estate, Egbeda, Lagos, Nigeria.
© 2026 Ransford Global Professional Development Limited. RC-8767187. All rights reserved.
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