Ac Unit Contactor Wiring Diagram. Symbols common to most circuits are explained on page 5. The universal coils operate on ac and dc both.
Electric motors 230 460v three phase circuits wiring. 51 12 2 coil surge absorber. Three phase 480 volt ac power comes into the three normally open contacts at the top of the contactor via screw terminals labeled l1 l2 and l3 the l2 terminal is hidden behind a square shaped snubber circuit connected across the contactors coil terminals.
The outdoor unit still does not come on.
The reversing drum switch is. Connect black wire to terminal 5 on start relay and terminal 21 on contactor. Calculate electric motor. At this position if we look at the dpdt relay we find it to be.