1. Is the systematic elimination of the possibilities.

2. In order to be able to troubleshoot, you need to know what “right” is in the first place. 


Troubleshooting heating and air conditioning systems begins with the two points listed above. We can try to complicate it if we want to, but doing that won’t change the simple truth. The foundation for troubleshooting a problem with a refrigeration  system, air flow system, or electrical system, is knowing what the sequence of operation would be if the equipment was working properly, and what a component within the equipment would look like or test like if it was OK.

On this web site, we’ll explore this simple philosophy, and go through the process of specifically defining an equipment problem, outlining examples of test and evaluation procedures, and arrive at a conclusion based on those tests and evaluation procedures what the source of the problem is in a particular situation.

To review a specific troubleshooting problem, choose from a category listed to the right, and feel free to leave a comment or ask a question about troubleshooting HVACR equipment.

If you want to get in touch with Jim, his cell phone number is 520-907-4867. If you get his voice mail because he’s either shooting a video or on location facilitating a workshop, leave him a message and he’ll get back to you. You can send Jim an email at


Technical Training Associates
PO Box 2259
Green Valley, AZ 85622-2259
Phone: 520-625-6847