22-212-21-3. Checking indoor unit addressesUse the remote controller to check the addresses of the indoorunits. Press and hold the button and button for 4seconds or longer (simple settings mode, “ALL” appears on theremote controller). Then press the button and select theindoor address.(For the system addresses of the No. 1 outdoor unit, each time thebutton is pressed, the address changes as follows: 1-1, 1-2, ...)The indoor unit fan operates only at the selected indoor unit.Confirm the indoor unit address. (For the system addresses ofthe No. 2 outdoor unit, the displayed addresses are 2-1, 2-2, ...)Press the button again to return to the normal remotecontroller mode. Fig. 2-182-21-4. Indicating (marking) the indoor and outdoor unit combination numberIndicate (mark) the number after automatic address setting is completed.(1) So that the combination of each indoor unit can be easily checked when multiple units are installed, ensurethat the indoor and outdoor unit numbers correspond to the system address number on the outdoor unitcontrol PCB, and use a magic marker or similar means which cannot be easily removed to indicate thenumbers in an easily visible location on the indoor units (near the indoor unit nameplates).Example : (Outdoor) 1 – (Indoor) 1(Outdoor) 2 – (Indoor) 1(2) These numbers will be needed for maintenance. Be sure to indicate them.2-22. Automatic Address Setting2-22-1. Basic wiring diagram3-11-1 2-1Refrigerant system No. 1 Refrigerant system No. 2 Refrigerant system No. 3(Change setting to “1”) (Change setting to “2”) (Change setting to “3”)Change the terminalplug (black) short-circuit socketChange the terminalplug (black) short-circuit socketInter-unit controlwiring3.oN2.oN1.oNRemote controller Remote controller Remote controllerIndoor unitOutdoor unitTerminal plate 1, 2Terminal plate 1, 2System addressrotary switch on theoutdoor unit PCBLink wiringA terminal plug (black) is attached to each of the outdoor unit control PCBs.At only one outdoor unit, leave the terminal plug short-circuit socket on the “Yes” side.At all the other outdoor units, change the socket (from “Yes” to “No”).A maximum of 8 indoor units can be connected to 1 remote controller for group control.NOTE
