Cover of The Complete HVAC Troubleshooting System

The Complete HVAC Troubleshooting System

By Roberto M. Morales

Miami HVAC contractor · 20+ years in the field

Diagnose Faster. Stop Guessing. Fix It Right the First Time.

A step-by-step field method: from the customer's complaint, to the first measurement, to a verified root cause — with real case studies on airflow, refrigerant, electrical and compressor problems.

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Truck quick reference
Truck quick reference
Real troubleshooting cases
Real troubleshooting cases
Case study 1
Case study 1

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AvailableIntermediate → AdvancedEnglishProfessionals
HVAC Professional Books · Field Diagnostics

The Complete HVAC Troubleshooting System

Diagnose Faster. Stop Guessing. Fix It Right the First Time.

By Roberto M. Morales

A complete diagnostic system built on 20+ years of hands-on HVAC experience — engineered to help technicians diagnose faster, stop guessing, and fix it right the first time.

Choose your format

Book price + applicable sales tax. That's all.

FREE Standard Shipping — 48 Contiguous U.S. States

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Faster shipping, Alaska, Hawaii, Puerto Rico & Canada: optional, paid, shown before payment.

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  • Printed on demand & shipped to you
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  • 383 pages of field-tested material
Watch the book in action

The Complete HVAC Troubleshooting System — 360° showcase and interior tour

Full rotation of the printed edition followed by a walk-through of real interior pages.

Why this book matters

From a symptom to a supported diagnosis

Built from more than 20 years of hands-on HVAC field experience, this book turns real service-call knowledge into a clear, repeatable diagnostic system technicians can use in the field.

The opening chapters separate a customer complaint from an observable symptom and a confirmed cause. Airflow, refrigerant, electrical operation and compressor condition form one connected diagnostic picture.

Who this book is for
  • HVAC technicians
  • Apprentices
  • Trade-school students
  • Service managers
  • HVAC business owners
  • Technicians who want a step-by-step diagnostic system

Find your problem · real examples from the book

See How This Book Helps You

Chapter 15 · Case study · Pages 266–267

The frozen evaporator that was not low on refrigerant

The symptom
The system cooled for several hours, then airflow weakened and ice appeared on the suction line and evaporator.
Inside the book
In this case, the technician found a heavily loaded filter and debris on the blower wheel. After the coil thawed and airflow was restored and verified, performance returned to an acceptable range without adding refrigerant.
What you will learn
Learn why ice alone does not identify the cause, and how airflow evidence helps separate a restriction from a refrigerant problem.
“A frozen evaporator is not a diagnosis.”

Chapters 6 and 7: airflow and refrigerant diagnostics. Educational case study for trained HVAC professionals; follow manufacturer instructions and applicable safety requirements. This is not a guaranteed result.

Actual book page · Chapter 15

What you will learn

Six connected diagnostic skills

Chapters 1–4, 16 and 19

Follow a diagnostic sequence

Separate the complaint, symptom and confirmed cause; verify the repair.

Chapters 5–6

Verify airflow before judging charge

Connect filter, blower and static-pressure evidence to system performance.

Chapter 7

Read refrigerant measurements in context

Interpret pressures, temperatures, superheat and subcooling together.

Chapter 9

Follow electrical evidence

Use the sequence of operation and voltage to identify where normal operation stops.

Chapter 10

Investigate compressor starting problems

Check supporting electrical conditions before assuming compressor failure.

Chapter 14

Find and verify refrigerant leaks

Understand leak-location reasoning and confirmation of system tightness.

Complete book benefits
  • Based on 20+ years of hands-on HVAC experience
  • Step-by-step field diagnostics
  • Airflow troubleshooting
  • Electrical troubleshooting
  • Refrigerant diagnostics
  • Compressor diagnostics
  • Practical real-world procedures

Look inside · Second Edition

Real pages. No email required.

Quick truck reference table pairing customer complaint with first observation and first measurement or verification
Chapter 5 opening page — essential diagnostic tools for HVAC troubleshooting and the three questions to ask before every test
Digital manometer page explaining total external static pressure, component pressure drop and fan-performance verification
Chapter 8 opening page — real HVAC troubleshooting cases showing how evidence, sequence and verification lead to root cause
Chapter 9 opening page — electrical diagnostics for HVAC systems, following the sequence of operation and the voltage
Chapter 10 opening page — advanced compressor diagnostics and how to protect the replacement compressor
Chapter 14 opening page — advanced refrigerant leak detection, locating the leak and proving the system is tight
Case study 1 — the system that needed refrigerant every summer, with complaint, evidence and measurements
Printed page 266 — Figure 15.3: Iced Evaporator: Airflow Cause-and-Effect, with Case study 2 — the frozen evaporator that was not low on refrigerant
Printed page 268 — Figure 15.4: Compressor Start Diagnosis, with Case study 3 — the compressor that was condemned too quickly
Chapter 17 — how master HVAC troubleshooters think and solve problems, the professional diagnostic mindset
System condition quick-reference chart summarizing what to check when nothing operates
Optional new-book announcements

Samples are free without subscribing. You can separately opt in to new-release announcements; every email includes an unsubscribe link.

Explore all 21 chapters
  1. 1The Mindset of a Professional HVAC Troubleshooterp. 1
  2. 2Choosing the Correct Diagnostic Directionp. 15
  3. 3Understanding HVAC System Symptomsp. 26
  4. 4The HVAC Diagnostic Processp. 43
  5. 5Essential Diagnostic Tools for HVAC Troubleshootingp. 59
  6. 6Airflow: The Most Overlooked Cause of HVAC System Failurep. 93
  7. 7Refrigerant System Diagnosticsp. 110
  8. 8Real HVAC Troubleshooting Casesp. 127
  9. 9Electrical Diagnostics for HVAC Systemsp. 143
  10. 10Advanced Compressor Diagnosticsp. 169
  11. 11The Complete HVAC Troubleshooting Decision Systemp. 193
  12. 12The Most Common HVAC Service Mistakes—and How to Avoid Themp. 210
  13. 13The Complete HVAC Service Callp. 225
  14. 14Advanced Refrigerant Leak Detectionp. 242
  15. 15Real HVAC Service Case Studiesp. 261
  16. 16The Complete HVAC Troubleshooting Checklistp. 278
  17. 17How Master HVAC Troubleshooters Think and Solve Problemsp. 295
  18. 18The 25 Most Common HVAC Problems and Their Fast Diagnostic Cluesp. 310
  19. 19The Complete HVAC Troubleshooting Flowchartp. 331
  20. 20Professional Field Lessons from 20+ Years of HVAC Servicep. 345
  21. 21The Responsibility of the HVAC Professionalp. 357

Meet the author

Roberto M. Morales

Roberto M. Morales in the field

Roberto M. Morales is the owner of an HVAC company in Miami and an author with more than 20 years of hands-on experience in the field. His work focuses on turning real service-call knowledge into clear, structured systems that technicians can actually use — on the roof, in the attic, and at the electrical panel.

About Roberto M. Morales
Explore the printed book · six views
The printed paperback standing upright — front cover straight-on.
The printed paperback standing upright — front cover straight-on.
3/4 angle showing the front cover and spine together.
3/4 angle showing the front cover and spine together.
Spine detail — title, author, and imprint on the real artwork.
Spine detail — title, author, and imprint on the real artwork.
Back cover straight-on — description, bullets, and details.
Back cover straight-on — description, bullets, and details.
3/4 angle showing the back cover and spine together.
3/4 angle showing the back cover and spine together.
Low-angle hero shot showing cover, spine thickness, and page block.
Low-angle hero shot showing cover, spine thickness, and page block.

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paperback

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Printed paperback for your field reference.

hardcover

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Printed hardcover for your reference library.

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Book price + applicable sales tax. That's all.

FREE Standard Shipping — 48 Contiguous U.S. States

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Faster shipping, Alaska, Hawaii, Puerto Rico & Canada: optional, paid, shown before payment.

Secure checkout on RobertoMMorales.com. Printed to order and shipped with tracking.

Secure Stripe payment · Arrives damaged, misprinted or wrong? Report within 30 days for a replacement or refund. Policy

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Seeing Is Believing!

Questions before you buy

Frequently asked questions

Where can I buy it?
Directly on this website — choose your format above and check out securely with Stripe.
Who is this book for?
Written for hvac technicians, apprentices, trade-school students, service managers, hvac business owners, technicians who want a step-by-step diagnostic system.
Is this a beginner or advanced book?
This title is classified as Intermediate → Advanced.
What language is the book written in?
English.

Continue your HVAC airflow training

Build the rest of your diagnostic system with the companion field guides in the Stop Guessing series.

Next book

Stop Guessing: HVAC Airflow Made Simple

A practical field guide that helps HVAC technicians understand airflow, measure system performance correctly, diagnose restrictions, and solve comfort problems with confidence.