This course is designed to help a technician to troubleshoot an HVAC system. Using step-by-step approach, we address both common problems and the ones often overlooked. We start without tools, simply by feeling, hearing and looking. Then we move onto using actual tools.
Read more
This course is designed to help a technician to troubleshoot an HVAC system. Using step-by-step approach, we address both common problems and the ones often overlooked. We start without tools, simply by feeling, hearing and looking. Then we move onto using actual tools.
This course is designed to help a technician to troubleshoot an HVAC system. Using step-by-step approach, we address both common problems and the ones often overlooked. We start without tools, simply by feeling, hearing and looking. Then we move onto using actual tools.
The attendee will be shown diagrams which help to make sense of instructions pertaining to performance of certain procedures necessary to properly troubleshoot an HVAC system.
We discuss temperature probes, refrigeration gages, an anemometer, an airflow hood, information they provide and steps necessary to achieve an accurate diagnosis of the problem.
We touch on superheat and sub-cooling as well.
Have you gone to fix an AC unit only to get a call back a day or two later with a complaint the unit is still not working?
Do you have an AC unit on your property which seems to have had every part replaced and still not working?
Do you want to advance your knowledge base by acquiring the troubleshooting tools that you will be using again and again saving you time and money?
Logical, step by step troubleshooting method taught by the HVAC instructor with more than 30 years of experience.
The money spent on this webinar will we recouped just in one service call.
"During my over 30 year HVAC teaching career I’ve encountered lots of questions regarding troubleshooting HVAC systems. I realized that many of these questions repeat themselves and I developed a logical, step by step troubleshooting system which I will share with you."
Julio Herrera, Instructor
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What's inside
Learning objective
Syllabus
Introduction to HVAC Troubleshooting and what will be covered. Troubleshooting unit and accessories without tools. Finding a bad dryer and replacing it.
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Syllabus
Introduction to HVAC Troubleshooting and what will be covered. Troubleshooting unit and accessories without tools. Finding a bad dryer and replacing it.
Preliminary checks, essential things to look for. Airflow and how much you should have, is your condenser and evaporator ok?
Checks on the refrigerant side. What the pressures and temperatures should be. Superheat and subcooling, what are they and how to obtain them.
How airflow can affect the pressures and superheat readings. Checking and diagnosing problems with suction line filter dryers. Is the refrigerant low, what low refrigerant will cause and how to find it.
Condenser problems, what to look for and how to solve them. Where pressures and temperatures should be checked in a system and why?
Electrical side troubleshooting. How to test and where to test, the 220v line side, checking fuses with power on and power off and testing contactors.
Testing contactors. Testing capacitors, what is a good and what is a bad capacitor, what will a bad capacitor cause and what to look for.
Checking windings in a compressor motor, on both 3 phase and single phase. Finding the run and start windings in a single-phase compressor motor.
Checking and finding an open overload. The difference between an open overload and an open winding.
Checking the 24 volts side. Using schematic diagram with demonstration what each point is in the schematic and in the actual unit, including where to place your test leads. Transformers, what to look for and how to solve the problems.
What switches could keep unit from starting, LP, HP, OPS etc… You will see the schematic showing the circuit and where the switches are located and where the problem could be? Testing the 24v side of the system and the contactor and what to look for in the entire circuit.
Good to know
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Activities
Practice Troubleshooting an HVAC System Without Tools
Show steps
Troubleshooting HVAC systems without tools can be challenging, but it is possible. This activity will help you develop the skills you need to do this.
Show steps
-
Identify the symptoms of a faulty HVAC system.
-
Use your senses to troubleshoot the problem.
-
Try to fix the problem by performing simple repairs.
Create a Troubleshooting Toolkit
Show steps
Having the right tools can make troubleshooting HVAC systems much easier. This activity will help you create a customized toolkit that includes all the tools you need.
Browse courses on
Troubleshooting Tools
Show steps
-
Research the different tools that are used for troubleshooting HVAC systems.
-
Purchase the tools that you need.
-
Organize your tools in a way that makes them easy to find and use.
Watch a Tutorial on Superheat and Subcooling
Show steps
Understanding superheat and subcooling is essential for troubleshooting refrigeration systems. This tutorial will give you a clear and concise explanation of these concepts.
Show steps
-
Watch the tutorial on superheat and subcooling.
-
Take notes on the key points.
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Apply what you've learned to troubleshoot a refrigeration system.
Five other activities
Expand to see all activities and additional details
Show all eight activities
Create a Troubleshooting Checklist
Show steps
Having a checklist will help you stay organized and ensure that you don't miss any important steps when troubleshooting an HVAC system.
Show steps
-
List the most common problems that you encounter when troubleshooting HVAC systems.
-
For each problem, list the steps that you need to take to troubleshoot it.
-
Use your checklist the next time you troubleshoot an HVAC system.
Practice Troubleshooting a Faulty Capacitor
Show steps
Capacitors are common components in HVAC systems, and being able to troubleshoot them quickly and efficiently will save you time and money.
Browse courses on
Capacitors
Show steps
-
Identify the symptoms of a faulty capacitor.
-
Test the capacitor using a multimeter.
-
Replace the capacitor if it is found to be faulty.
Volunteer at a Local HVAC Company
Show steps
Volunteering at a local HVAC company is a great way to gain hands-on experience and learn from experienced professionals.
Browse courses on
Hands-on Experience
Show steps
-
Contact a local HVAC company and ask if they have any volunteer opportunities.
-
If they do, sign up for a volunteer shift.
-
Show up on time and be prepared to work hard.
Mentor a Junior HVAC Technician
Show steps
Mentoring a junior HVAC technician is a great way to give back to the community and help someone else learn the trade.
Browse courses on
Mentorship
Show steps
-
Contact a local HVAC company and ask if they have any junior technicians who need a mentor.
-
If they do, sign up to be a mentor.
-
Meet with your mentee regularly and provide them with guidance and support.
Create a Troubleshooting Video Series
Show steps
Creating a troubleshooting video series is a great way to share your knowledge and help others learn how to troubleshoot HVAC systems.
Show steps
-
Choose a topic for your video series.
-
Write a script for each video.
-
Record and edit your videos.
Practice Troubleshooting an HVAC System Without Tools
Show steps
Troubleshooting HVAC systems without tools can be challenging, but it is possible. This activity will help you develop the skills you need to do this.
Show steps
- Identify the symptoms of a faulty HVAC system.
- Use your senses to troubleshoot the problem.
- Try to fix the problem by performing simple repairs.
Create a Troubleshooting Toolkit
Show steps
Having the right tools can make troubleshooting HVAC systems much easier. This activity will help you create a customized toolkit that includes all the tools you need.
Browse courses on
Troubleshooting Tools
Show steps
- Research the different tools that are used for troubleshooting HVAC systems.
- Purchase the tools that you need.
- Organize your tools in a way that makes them easy to find and use.
Watch a Tutorial on Superheat and Subcooling
Show steps
Understanding superheat and subcooling is essential for troubleshooting refrigeration systems. This tutorial will give you a clear and concise explanation of these concepts.
Show steps
- Watch the tutorial on superheat and subcooling.
- Take notes on the key points.
- Apply what you've learned to troubleshoot a refrigeration system.
Create a Troubleshooting Checklist
Show steps
Having a checklist will help you stay organized and ensure that you don't miss any important steps when troubleshooting an HVAC system.
Show steps
- List the most common problems that you encounter when troubleshooting HVAC systems.
- For each problem, list the steps that you need to take to troubleshoot it.
- Use your checklist the next time you troubleshoot an HVAC system.
Practice Troubleshooting a Faulty Capacitor
Show steps
Capacitors are common components in HVAC systems, and being able to troubleshoot them quickly and efficiently will save you time and money.
Browse courses on
Capacitors
Show steps
- Identify the symptoms of a faulty capacitor.
- Test the capacitor using a multimeter.
- Replace the capacitor if it is found to be faulty.
Volunteer at a Local HVAC Company
Show steps
Volunteering at a local HVAC company is a great way to gain hands-on experience and learn from experienced professionals.
Browse courses on
Hands-on Experience
Show steps
- Contact a local HVAC company and ask if they have any volunteer opportunities.
- If they do, sign up for a volunteer shift.
- Show up on time and be prepared to work hard.
Mentor a Junior HVAC Technician
Show steps
Mentoring a junior HVAC technician is a great way to give back to the community and help someone else learn the trade.
Browse courses on
Mentorship
Show steps
- Contact a local HVAC company and ask if they have any junior technicians who need a mentor.
- If they do, sign up to be a mentor.
- Meet with your mentee regularly and provide them with guidance and support.
Create a Troubleshooting Video Series
Show steps
Creating a troubleshooting video series is a great way to share your knowledge and help others learn how to troubleshoot HVAC systems.
Show steps
- Choose a topic for your video series.
- Write a script for each video.
- Record and edit your videos.
Career center
HVAC Technician
HVAC Engineer
Refrigeration Technician
Plant Manager
Maintenance Manager
Energy Auditor
Building Inspector
Construction Manager
Real Estate Agent
Electrician
Plumber
Carpenter
Roofer
Welder
Painter
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