How to trace indoor of outdoor
When we work on a commercial place. There are many units. We do not know that which indoor is of the which Outdoor. We know that Which indoor’s work we are doing. But we do not know that Which one of his AC.
it’s very Simple we should turn off his power supply and check that which outdoor is off. If many Units is Off Do not worry. Remove his connection from indoor and join the wire outdoor supply wire. Then check outdoor wire with multi meter. Multi meter set on Continuity.