What are the first two checks typically made on an electronic control?

The first two checks typically made on an electronic control focus on ensuring that the control operates within its designed electrical parameters. Proper input voltage is crucial because it verifies that the control is receiving the correct power supply. If the input voltage is too low or too high, it can lead to malfunction or potentially damage the control system.

Proper output voltage is equally important as it indicates that the control is functioning correctly and supplying the necessary voltage to the components it regulates. If the output voltage is out of specification, the connected components (like motors or valves) may not operate properly or at all.

These checks are fundamental to diagnosing electronic control issues because they establish a baseline for operation. Assessing wiring integrity and ground connection, while important, comes after ensuring that the power supply is correct. Similarly, while checking for component cleanliness and mechanical wear, as well as monitoring ambient temperature and humidity, are relevant in maintenance routines, they are not the immediate priority when first assessing electronic controls. These aspects become part of a more comprehensive troubleshooting approach once power-related issues have been ruled out.