Field Notes
Plain-language notes on components, circuits and how to read a schematic, written for people at the bench, not for a classroom.
Field Notes
How to Find Common, Start, and Run on a PSC Compressor Motor!
Identifying the common, start and run terminals on a PSC compressor using resistance readings.
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Top 10 Gas Water Heater Pilot Light Problems! When It Won't Stay Lit!
Ten reasons a gas water heater pilot light will not stay lit.
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Adjusting the Furnace/AC Airflow Speed on a 120v PSC Blower Motor!
Changing blower speed taps on a 120v PSC motor in a furnace or air handler.
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Adjusting the Airflow Speed on ECM Blower Fan Motors! (Variable & Multi-Speed Types)
How to change airflow speed on variable and multi-speed ECM blower motors.
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TXV Bulb Mounting Position and External Equalization!
Where the TXV sensing bulb should be mounted, and how external equalization works.
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HVAC Electrical Training Board For Wiring, Components, Wiring Diagrams, Troubleshooting
A low cost hands-on training board that teaches thermostat wiring, components, diagram reading and electrical troubleshooting. Full build guide on the HVAC Electrical ...
Read more →Electronics, in plain language.
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