dinosaur Posted May 16, 2009 Share Posted May 16, 2009 My regular, old-fashioned garage door push button is normally open. My dealer and I tested it with a multi-tester because we got unexpected results when adding the HC500 relay.Yet, when my dealer connected another pair of wires (in parallel) from the motor to the relay on the HC500 (using OM and O), it disabled the old button.Can't figure this out so for the heck of it we experimented and moved the wires to OM and C on the HC500. With that wiring scheme the old button is operational and the TOGGLE command works in C4.We're scratching our heads. (again, we tested the old button and it's Normally Open and we wired the HC500 relay in parallel - we put the new wire pair from the HC500 directly into the motor by twisting the old wires from the button with the new wires from the 500)Can someone explain this? Link to comment Share on other sites More sharing options...
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