According to Johnson, "Using Schematics To Troubleshoot HVAC/R Electrical Circuits ... focuses on single-phase equipment and incorporates furnace, A/C and heat pump wiring diagrams. Other programs ...

As HVAC technicians continue to add to their electrical skillset, reading wiring diagrams becomes a valuable asset for comprehension of system function and in diagnostic troubleshooting. “The most ...

There’s a few open source options out there for creating electrical schematics ... there’s been limited options for creating wiring diagrams. Often these are created in Microsoft’s Visio ...