Basic Appliance Repair
Dr. Gene A Constant · the whole book, free to read here
- Power in.
- Control decides.
- Safety permits.
- Load operates.
- Feedback confirms.
Every appliance in this book runs on that chain. When a machine quits, one link has failed. Read the book, listen to it while your hands are busy, and practice finding the broken link before you buy a single part.
Safety first, every time. Unplug the appliance or switch off its breaker, and prove it is off. If you smell gas, stop and leave the troubleshooting. The high-voltage side of a microwave and any sealed refrigerant system belong to a qualified technician.
The free class: twelve lessons
One lesson per chapter, in the book's order. Each one breaks the chapter into its ideas, gives you something to work, and asks new questions every attempt. All twelve are open. Free, no account, and your progress stays on your own device.
- 1The diagnostic frameworkThree questions, the appliance chain, the four part families, and testing safely with a meter you have tested first.Open
- 2Washing machinesWon’t start, won’t drain, won’t spin, leaks and shakes — the permit, the drain path, and the load.Open
- 3DryersAirflow first, the thermal fuse as messenger, the element, igniter and thermostats, and belts and rollers.Open
- 4DishwashersFilter and spray, the drain path from sink to pump, the knockout plug, and the door latch and seal.Open
- 5RefrigeratorsCoils and fans, door seals, defrost and airflow between compartments, and the ice maker.Open
- 6Ovens and rangesElectric and gas: elements, igniters, burners, temperature, and the broil-works-bake-doesn’t shortcut.Open
- 7MicrowavesWhat you can fix and what you cannot: door switches, the turntable, the light — and the boundary.Open
- 8Garbage disposalsThe reset button, the hum, the hex-wrench unjam, and replacing one in the right order.Open
- 9HVAC filters, thermostats and the air handlerFilters that fit, airflow direction, short cycling, the condensate drain and the access door switch.Open
- 10Water heatersSafety first, the high-limit reset, elements and thermostats, flame proving, and the replace decision.Open
- 11Parts, sourcing and repair-versus-replaceThe ten-year rule as a shortcut, a scorecard, parts availability, and when replacement is rational.Open
- 12The sovereign appliance homeMaintenance schedules, the records that change the service call, and a baseline for every appliance.Open
The Certificate of Comprehension
Thirty questions drawn from all twelve lessons, graded on our server; you need 80% to pass. A pass prints a serial-numbered certificate with a link anyone can use to verify it. It records comprehension of the book. It is not a licence or an industry credential.
Sit the exam Open the class pageThe Chain Bench
Eight real symptoms from the book. Read the three answers, then tap the link in the chain you think has failed. A wrong pick tells you why that link is not the one, so you learn from every tap.
Want harder cases? The Fault Bench gives you two tests to spend on each fault. This bench is practice, not a certification. The certificate comes from the class exam above.