Relay Testing Cheat Sheet – Easy Way to Find out if a Relay has Failed or What the Coil Voltage Should be.
Intro to the Relay Testing Cheat Sheet This blog shows a diode trick and checklist for fast testing of relays, as well as determining the relay coil voltage. The checklist is further down in this blog. Important Note Never attempt to repair circuit boards in appliances or HVAC systems unless you are directly supervised by […]